Measurements of $ep \to e^\prime π^+n$ at W = 1.6 - 2.0 GeV and extraction of nucleon resonance electrocouplings at CLAS

Park, Kijun; Aznauryan, I. G.; Burkert, V. D.; Adhikari, K. P.; Amaryan, M. J.; Pereira, S. Anefalos; Avakian, H.; Battaglieri, M.; Badui, R.; Bedlinskiy, I.; Biselli, A. S.; Bono, J.; Briscoe, W. J.; Brooks, W. K.; Carman, D. S.; Celentano, A.; Chandavar, S.; Charles, G.; Colaneri, L.; Cole, P. L.; Contalbrigo, M.; Cortes, O.; Crede, V.; D'Angelo, A.; Dashyan, N.; De Vita, R.; De Sanctis, E.; Deur, A.; Djalali, C.; Doughty, D.; Dupre, R.; Egiyan, H.; Alaoui, A. El; Elouadrhiri, L.; Fassi, L. El; Eugenio, P.; Fedotov, G.; Fegan, S.; Fersch, R.; Filippi, A.; Fleming, J. A.; Garillon, B.; Garcon, M.; Gevorgyan, N.; Gilfoyle, G. P.; Giovanetti, K. L.; Girod, F. X.; Joo, H. S.; Goetz, J. T.; Golovatch, E.; Gothe, R. W.; Griffioen, K. A.; Guegan, B.; Guidal, M.; Guo, L.; Hakobyan, H.; Hanretty, C.; Hattawy, M.; Hicks, K.; Holtrop, M.; Hughes, S. M.; Hyde, C. E.; Ilieva, Y.; Ireland, D. G.; Ishkhanov, B. S.; Isupov, E. L.; Jenkins, D.; Jiang, H.; Jo, H. S.; Joo, K.; Joosten, S.; Keller, D.; Khandaker, M.; Kim, A.; Kim, W.; Klein, A.; Klein, F. J.; Kubarovsky, V.; Kuhn, S. E.; Kuleshov, S. V.; Lenisa, P.; Livingston, K.; Lu, H. Y.; MacGregor, I. J.; Markov, N.; Martinez, D.; McKinnon, B.; Mokeev, V.; Montgomery, R. A.; Moutarde, H.; Camacho, C. Munoz; Nadel-Turonski, P.; Niccolai, S.; Niculescu, G.; Niculescu, I.; Osipenko, M.; Ostrovidov, A. I.; Paolone, M.; Pasyuk, E.; Peng, P.; Phelps, W.; Phillips, J. J.; Pisano, S.; Pogorelko, O.; Price, J. W.; Procureur, S.; Prok, Y.; Protopopescu, D.; Puckett, A. J.; Raue, B. A.; Ripani, M.; Rizzo, A.; Rosner, G.; Rossi, P.; Roy, P.; Sabati??, F.; Salgado, C.; Schott, D.; Schumacher, R. A.; Seder, E.; Sharabian, Y. G.; Simonyan, A.; Skorodumina, Iu.; Smith, E. S.; Smith, G. D.; Sparveris, N.; Stoler, P.; Strakovsky, I. I.; Strauch, S.; Sytnik, V.; Taiuti, M.; Tang, W.; Taylor, C. E.; Tian, Ye; Trivedi, A.; Ungaro, M.; Voskanyan, H.; Voutier, E.; Walford, N. K.; Watts, D. P.; Wei, X.; Weinstein, L. B.; Wood, M. H.; Zachariou, N.; Zana, L.; Zhang, J.; Zhao, Z. W.; Zonta, I.

doi:10.1103/PhysRevC.91.045203

Title: Measurements of $$ep \to e^\prime π^+n$$ at W = 1.6 - 2.0 GeV and extraction of nucleon resonance electrocouplings at CLAS

Abstract

Differential cross sections of the exclusive process $$e p \to e^\prime \pi^+ n$$ were measured with good precision in the range of the photon virtuality $Q^2 = 1.8 - 4.5$ GeV$^2$, and the invariant mass range of the $$\pi^+ n$$ final state W = 1.6 - 2.0 GeV using the CEBAF Large Acceptance Spectrometer. Data were collected with nearly complete coverage in the azimuthal and polar angles of the $$n\pi^+$$ center-of-mass system. More than 37,000 cross section points were measured. The contributions of the isospin $$I = {1\over 2}$$ resonances $$N(1675){5\over 2}^-$$, $$N(1680){5\over 2}^+$$ and $$N(1710){1\over 2}^+$$ were extracted at different values of $Q^2$ using a single-channel, energy-dependent resonance amplitude analysis. Two different approaches, the unitary isobar model and the fixed-$$t$$ dispersion relations, were employed in the analysis. We observe significant strength of the $$N(1675){5\over 2}^-$$ in the $$A_{1/2}$$ amplitude, which is in strong disagreement with quark models that predict both transverse amplitudes to be strongly suppressed. For the $$N(1680){5\over 2}^+$$ we observe a slow changeover from the dominance of the $$A_{3/2}$$ amplitude at the real photon point ($Q^2=0$) to a $Q^2$ where $$A_{1/2}$$ begins to dominate. The scalar amplitude $$S_{1/2}$$ drops rapidly with $Q^2$ consistent with quark model prediction. For the $$N(1710){1\over 2}^+$$ resonance our analysis shows significant strength for the $$A_{1/2}$$ amplitude at $Q^2 < 2.5$ GeV$^2$.

Authors:: Park, Kijun; Aznauryan, I. G.; Burkert, V. D.; Adhikari, K. P.; Amaryan, M. J.; Pereira, S. Anefalos; Avakian, H.; Battaglieri, M.; Badui, R.; Bedlinskiy, I.; Biselli, A. S.; Bono, J.; Briscoe, W. J.; Brooks, W. K.; Carman, D. S.; Celentano, A.; Chandavar, S.; Charles, G.; Colaneri, L.; Cole, P. L. more »« less

Publication Date:: Wed Apr 01 00:00:00 EDT 2015

Research Org.:: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Nuclear Physics (NP)

Contributing Org.:: The CLAS Collaboration

OSTI Identifier:: 1178732

Alternate Identifier(s):: OSTI ID: 1181403

Report Number(s):: JLAB-PHY-15-4; DOE/OR/23177-3253; arXiv:1412.0274
Journal ID: ISSN 0556-2813; PRVCAN; ArticleNumber: 045203; TRN: US1600817

Grant/Contract Number:: AC05-06OR23177

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review C, Nuclear Physics

Additional Journal Information:: Journal Volume: 91; Journal Issue: 4; Journal ID: ISSN 0556-2813

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats


                    Park, Kijun, Aznauryan, I. G., Burkert, V. D., Adhikari, K. P., Amaryan, M. J., Pereira, S. Anefalos, Avakian, H., Battaglieri, M., Badui, R., Bedlinskiy, I., Biselli, A. S., Bono, J., Briscoe, W. J., Brooks, W. K., Carman, D. S., Celentano, A., Chandavar, S., Charles, G., Colaneri, L., Cole, P. L., Contalbrigo, M., Cortes, O., Crede, V., D'Angelo, A., Dashyan, N., De Vita, R., De Sanctis, E., Deur, A., Djalali, C., Doughty, D., Dupre, R., Egiyan, H., Alaoui, A. El, Elouadrhiri, L., Fassi, L. El, Eugenio, P., Fedotov, G., Fegan, S., Fersch, R., Filippi, A., Fleming, J. A., Garillon, B., Garcon, M., Gevorgyan, N., Gilfoyle, G. P., Giovanetti, K. L., Girod, F. X., Joo, H. S., Goetz, J. T., Golovatch, E., Gothe, R. W., Griffioen, K. A., Guegan, B., Guidal, M., Guo, L., Hakobyan, H., Hanretty, C., Hattawy, M., Hicks, K., Holtrop, M., Hughes, S. M., Hyde, C. E., Ilieva, Y., Ireland, D. G., Ishkhanov, B. S., Isupov, E. L., Jenkins, D., Jiang, H., Jo, H. S., Joo, K., Joosten, S., Keller, D., Khandaker, M., Kim, A., Kim, W., Klein, A., Klein, F. J., Kubarovsky, V., Kuhn, S. E., Kuleshov, S. V., Lenisa, P., Livingston, K., Lu, H. Y., MacGregor, I. J., Markov, N., Martinez, D., McKinnon, B., Mokeev, V., Montgomery, R. A., Moutarde, H., Camacho, C. Munoz, Nadel-Turonski, P., Niccolai, S., Niculescu, G., Niculescu, I., Osipenko, M., Ostrovidov, A. I., Paolone, M., Pasyuk, E., Peng, P., Phelps, W., Phillips, J. J., Pisano, S., Pogorelko, O., Price, J. W., Procureur, S., Prok, Y., Protopopescu, D., Puckett, A. J., Raue, B. A., Ripani, M., Rizzo, A., Rosner, G., Rossi, P., Roy, P., Sabati??, F., Salgado, C., Schott, D., Schumacher, R. A., Seder, E., Sharabian, Y. G., Simonyan, A., Skorodumina, Iu., Smith, E. S., Smith, G. D., Sparveris, N., Stoler, P., Strakovsky, I. I., Strauch, S., Sytnik, V., Taiuti, M., Tang, W., Taylor, C. E., Tian, Ye, Trivedi, A., Ungaro, M., Voskanyan, H., Voutier, E., Walford, N. K., Watts, D. P., Wei, X., Weinstein, L. B., Wood, M. H., Zachariou, N., Zana, L., Zhang, J., Zhao, Z. W., and Zonta, I. Measurements of $ep \to e^\prime π^+n$ at W = 1.6 - 2.0 GeV and extraction of nucleon resonance electrocouplings at CLAS.  United States: N. p., 2015. 
Web.  doi:10.1103/PhysRevC.91.045203.

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                    Park, Kijun, Aznauryan, I. G., Burkert, V. D., Adhikari, K. P., Amaryan, M. J., Pereira, S. Anefalos, Avakian, H., Battaglieri, M., Badui, R., Bedlinskiy, I., Biselli, A. S., Bono, J., Briscoe, W. J., Brooks, W. K., Carman, D. S., Celentano, A., Chandavar, S., Charles, G., Colaneri, L., Cole, P. L., Contalbrigo, M., Cortes, O., Crede, V., D'Angelo, A., Dashyan, N., De Vita, R., De Sanctis, E., Deur, A., Djalali, C., Doughty, D., Dupre, R., Egiyan, H., Alaoui, A. El, Elouadrhiri, L., Fassi, L. El, Eugenio, P., Fedotov, G., Fegan, S., Fersch, R., Filippi, A., Fleming, J. A., Garillon, B., Garcon, M., Gevorgyan, N., Gilfoyle, G. P., Giovanetti, K. L., Girod, F. X., Joo, H. S., Goetz, J. T., Golovatch, E., Gothe, R. W., Griffioen, K. A., Guegan, B., Guidal, M., Guo, L., Hakobyan, H., Hanretty, C., Hattawy, M., Hicks, K., Holtrop, M., Hughes, S. M., Hyde, C. E., Ilieva, Y., Ireland, D. G., Ishkhanov, B. S., Isupov, E. L., Jenkins, D., Jiang, H., Jo, H. S., Joo, K., Joosten, S., Keller, D., Khandaker, M., Kim, A., Kim, W., Klein, A., Klein, F. J., Kubarovsky, V., Kuhn, S. E., Kuleshov, S. V., Lenisa, P., Livingston, K., Lu, H. Y., MacGregor, I. J., Markov, N., Martinez, D., McKinnon, B., Mokeev, V., Montgomery, R. A., Moutarde, H., Camacho, C. Munoz, Nadel-Turonski, P., Niccolai, S., Niculescu, G., Niculescu, I., Osipenko, M., Ostrovidov, A. I., Paolone, M., Pasyuk, E., Peng, P., Phelps, W., Phillips, J. J., Pisano, S., Pogorelko, O., Price, J. W., Procureur, S., Prok, Y., Protopopescu, D., Puckett, A. J., Raue, B. A., Ripani, M., Rizzo, A., Rosner, G., Rossi, P., Roy, P., Sabati??, F., Salgado, C., Schott, D., Schumacher, R. A., Seder, E., Sharabian, Y. G., Simonyan, A., Skorodumina, Iu., Smith, E. S., Smith, G. D., Sparveris, N., Stoler, P., Strakovsky, I. I., Strauch, S., Sytnik, V., Taiuti, M., Tang, W., Taylor, C. E., Tian, Ye, Trivedi, A., Ungaro, M., Voskanyan, H., Voutier, E., Walford, N. K., Watts, D. P., Wei, X., Weinstein, L. B., Wood, M. H., Zachariou, N., Zana, L., Zhang, J., Zhao, Z. W., & Zonta, I. Measurements of $ep \to e^\prime π^+n$ at W = 1.6 - 2.0 GeV and extraction of nucleon resonance electrocouplings at CLAS.  United States.  https://doi.org/10.1103/PhysRevC.91.045203

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                    Park, Kijun, Aznauryan, I. G., Burkert, V. D., Adhikari, K. P., Amaryan, M. J., Pereira, S. Anefalos, Avakian, H., Battaglieri, M., Badui, R., Bedlinskiy, I., Biselli, A. S., Bono, J., Briscoe, W. J., Brooks, W. K., Carman, D. S., Celentano, A., Chandavar, S., Charles, G., Colaneri, L., Cole, P. L., Contalbrigo, M., Cortes, O., Crede, V., D'Angelo, A., Dashyan, N., De Vita, R., De Sanctis, E., Deur, A., Djalali, C., Doughty, D., Dupre, R., Egiyan, H., Alaoui, A. El, Elouadrhiri, L., Fassi, L. El, Eugenio, P., Fedotov, G., Fegan, S., Fersch, R., Filippi, A., Fleming, J. A., Garillon, B., Garcon, M., Gevorgyan, N., Gilfoyle, G. P., Giovanetti, K. L., Girod, F. X., Joo, H. S., Goetz, J. T., Golovatch, E., Gothe, R. W., Griffioen, K. A., Guegan, B., Guidal, M., Guo, L., Hakobyan, H., Hanretty, C., Hattawy, M., Hicks, K., Holtrop, M., Hughes, S. M., Hyde, C. E., Ilieva, Y., Ireland, D. G., Ishkhanov, B. S., Isupov, E. L., Jenkins, D., Jiang, H., Jo, H. S., Joo, K., Joosten, S., Keller, D., Khandaker, M., Kim, A., Kim, W., Klein, A., Klein, F. J., Kubarovsky, V., Kuhn, S. E., Kuleshov, S. V., Lenisa, P., Livingston, K., Lu, H. Y., MacGregor, I. J., Markov, N., Martinez, D., McKinnon, B., Mokeev, V., Montgomery, R. A., Moutarde, H., Camacho, C. Munoz, Nadel-Turonski, P., Niccolai, S., Niculescu, G., Niculescu, I., Osipenko, M., Ostrovidov, A. I., Paolone, M., Pasyuk, E., Peng, P., Phelps, W., Phillips, J. J., Pisano, S., Pogorelko, O., Price, J. W., Procureur, S., Prok, Y., Protopopescu, D., Puckett, A. J., Raue, B. A., Ripani, M., Rizzo, A., Rosner, G., Rossi, P., Roy, P., Sabati??, F., Salgado, C., Schott, D., Schumacher, R. A., Seder, E., Sharabian, Y. G., Simonyan, A., Skorodumina, Iu., Smith, E. S., Smith, G. D., Sparveris, N., Stoler, P., Strakovsky, I. I., Strauch, S., Sytnik, V., Taiuti, M., Tang, W., Taylor, C. E., Tian, Ye, Trivedi, A., Ungaro, M., Voskanyan, H., Voutier, E., Walford, N. K., Watts, D. P., Wei, X., Weinstein, L. B., Wood, M. H., Zachariou, N., Zana, L., Zhang, J., Zhao, Z. W., and Zonta, I. Wed .  
"Measurements of $ep \to e^\prime π^+n$ at W = 1.6 - 2.0 GeV and extraction of nucleon resonance electrocouplings at CLAS".  United States.  https://doi.org/10.1103/PhysRevC.91.045203.  https://www.osti.gov/servlets/purl/1178732.

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@article{osti_1178732,

  title        = {Measurements of $ep \to e^\prime π^+n$ at W = 1.6 - 2.0 GeV and extraction of nucleon resonance electrocouplings at CLAS},

  author       = {Park, Kijun and Aznauryan, I. G. and Burkert, V. D. and Adhikari, K. P. and Amaryan, M. J. and Pereira, S. Anefalos and Avakian, H. and Battaglieri, M. and Badui, R. and Bedlinskiy, I. and Biselli, A. S. and Bono, J. and Briscoe, W. J. and Brooks, W. K. and Carman, D. S. and Celentano, A. and Chandavar, S. and Charles, G. and Colaneri, L. and Cole, P. L. and Contalbrigo, M. and Cortes, O. and Crede, V. and D'Angelo, A. and Dashyan, N. and De Vita, R. and De Sanctis, E. and Deur, A. and Djalali, C. and Doughty, D. and Dupre, R. and Egiyan, H. and Alaoui, A. El and Elouadrhiri, L. and Fassi, L. El and Eugenio, P. and Fedotov, G. and Fegan, S. and Fersch, R. and Filippi, A. and Fleming, J. A. and Garillon, B. and Garcon, M. and Gevorgyan, N. and Gilfoyle, G. P. and Giovanetti, K. L. and Girod, F. X. and Joo, H. S. and Goetz, J. T. and Golovatch, E. and Gothe, R. W. and Griffioen, K. A. and Guegan, B. and Guidal, M. and Guo, L. and Hakobyan, H. and Hanretty, C. and Hattawy, M. and Hicks, K. and Holtrop, M. and Hughes, S. M. and Hyde, C. E. and Ilieva, Y. and Ireland, D. G. and Ishkhanov, B. S. and Isupov, E. L. and Jenkins, D. and Jiang, H. and Jo, H. S. and Joo, K. and Joosten, S. and Keller, D. and Khandaker, M. and Kim, A. and Kim, W. and Klein, A. and Klein, F. J. and Kubarovsky, V. and Kuhn, S. E. and Kuleshov, S. V. and Lenisa, P. and Livingston, K. and Lu, H. Y. and MacGregor, I. J. and Markov, N. and Martinez, D. and McKinnon, B. and Mokeev, V. and Montgomery, R. A. and Moutarde, H. and Camacho, C. Munoz and Nadel-Turonski, P. and Niccolai, S. and Niculescu, G. and Niculescu, I. and Osipenko, M. and Ostrovidov, A. I. and Paolone, M. and Pasyuk, E. and Peng, P. and Phelps, W. and Phillips, J. J. and Pisano, S. and Pogorelko, O. and Price, J. W. and Procureur, S. and Prok, Y. and Protopopescu, D. and Puckett, A. J. and Raue, B. A. and Ripani, M. and Rizzo, A. and Rosner, G. and Rossi, P. and Roy, P. and Sabati??, F. and Salgado, C. and Schott, D. and Schumacher, R. A. and Seder, E. and Sharabian, Y. G. and Simonyan, A. and Skorodumina, Iu. and Smith, E. S. and Smith, G. D. and Sparveris, N. and Stoler, P. and Strakovsky, I. I. and Strauch, S. and Sytnik, V. and Taiuti, M. and Tang, W. and Taylor, C. E. and Tian, Ye and Trivedi, A. and Ungaro, M. and Voskanyan, H. and Voutier, E. and Walford, N. K. and Watts, D. P. and Wei, X. and Weinstein, L. B. and Wood, M. H. and Zachariou, N. and Zana, L. and Zhang, J. and Zhao, Z. W. and Zonta, I.},

  abstractNote = {Differential cross sections of the exclusive process $e p \to e^\prime \pi^+ n$ were measured with good precision in the range of the photon virtuality $Q^2 = 1.8 - 4.5$ GeV$^2$, and the invariant mass range of the $\pi^+ n$ final state W = 1.6 - 2.0 GeV using the CEBAF Large Acceptance Spectrometer. Data were collected with nearly complete coverage in the azimuthal and polar angles of the $n\pi^+$ center-of-mass system. More than 37,000 cross section points were measured. The contributions of the isospin $I = {1\over 2}$ resonances $N(1675){5\over 2}^-$, $N(1680){5\over 2}^+$ and $N(1710){1\over 2}^+$ were extracted at different values of $Q^2$ using a single-channel, energy-dependent resonance amplitude analysis. Two different approaches, the unitary isobar model and the fixed-$t$ dispersion relations, were employed in the analysis. We observe significant strength of the $N(1675){5\over 2}^-$ in the $A_{1/2}$ amplitude, which is in strong disagreement with quark models that predict both transverse amplitudes to be strongly suppressed. For the $N(1680){5\over 2}^+$ we observe a slow changeover from the dominance of the $A_{3/2}$ amplitude at the real photon point ($Q^2=0$) to a $Q^2$ where $A_{1/2}$ begins to dominate. The scalar amplitude $S_{1/2}$ drops rapidly with $Q^2$ consistent with quark model prediction. For the $N(1710){1\over 2}^+$ resonance our analysis shows significant strength for the $A_{1/2}$ amplitude at $Q^2 < 2.5$ GeV$^2$.},

  doi          = {10.1103/PhysRevC.91.045203},

  journal      = {Physical Review C, Nuclear Physics},

  number       = 4,

  volume       = 91,

  place        = {United States},

  year         = {Wed Apr 01 00:00:00 EDT 2015},

  month        = {Wed Apr 01 00:00:00 EDT 2015}

}

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Works referenced in this record:

Unitary isobar model --MAID2007
journal, October 2007

Drechsel, D.; Kamalov, S. S.; Tiator, L.
The European Physical Journal A, Vol. 34, Issue 1
DOI: 10.1140/epja/i2007-10490-6

Review of Particle Physics
journal, August 2014

Olive, K. A.
Chinese Physics C, Vol. 38, Issue 9
DOI: 10.1088/1674-1137/38/9/090001

Dynamical coupled-channel model of meson production reactions in the nucleon resonance region
journal, February 2007

Matsuyama, A.; Sato, T.; Lee, T. -S. H.
Physics Reports, Vol. 439, Issue 5-6
DOI: 10.1016/j.physrep.2006.12.003

Quarks and the helicity structure of photoproduction amplitudes
journal, January 1974

Hey, A. J. G.; Weyers, J.
Physics Letters B, Vol. 48, Issue 1
DOI: 10.1016/0370-2693(74)90461-4

Multipole analysis of resonance photoproduction
journal, February 1976

Babcock, John; Rosner, Jonathan L.
Annals of Physics, Vol. 96, Issue 2
DOI: 10.1016/0003-4916(76)90190-1

Empirical transverse charge densities in the nucleon-to-<mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msub><mml:mi>P</mml:mi><mml:mn>11</mml:mn></mml:msub><mml:mo stretchy="false">(</mml:mo><mml:mn>1440</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:math> transition
journal, March 2009

Tiator, Lothar; Vanderhaeghen, Marc
Physics Letters B, Vol. 672, Issue 4-5
DOI: 10.1016/j.physletb.2009.01.048

Partial-wave analysis of single pion photoproduction in the resonance region using fixed-t dispersion relations
journal, October 1975

Crawford, R. L.
Nuclear Physics B, Vol. 97, Issue 1
DOI: 10.1016/0550-3213(75)90217-5

Relativistic quark model predictions for meson radiative transition form factors
journal, October 1990

Aznauryan, I. G.; Oganessyan, K. A.
Physics Letters B, Vol. 249, Issue 2
DOI: 10.1016/0370-2693(90)91261-9

Electromagnetic properties of baryons in a relativistic quark model
journal, November 2003

Merten, D.; Löring, U.; Metsch, B.
The European Physical Journal A, Vol. 18, Issue 2-3
DOI: 10.1140/epja/i2002-10304-5

Lowest- Q2 measurement of the γp → Δ reaction: Probing the pionic contribution
journal, December 2006

Stave, S.; Distler, M. O.; Nakagawa, I.
The European Physical Journal A, Vol. 30, Issue 3
DOI: 10.1140/epja/i2006-10162-1

Electroexcitation of nucleon resonances
journal, January 2012

Aznauryan, I. G.; Burkert, V. D.
Progress in Particle and Nuclear Physics, Vol. 67, Issue 1
DOI: 10.1016/j.ppnp.2011.08.001

Determination of quadrupole strengths in the <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msup><mml:mi>γ</mml:mi><mml:mo>∗</mml:mo></mml:msup><mml:mi>p</mml:mi><mml:mo>→</mml:mo><mml:mi mathvariant="normal">Δ</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>1232</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:math> transition at <mml:math altimg="si2.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msup><mml:mi>Q</mml:mi><mml:mn>2</mml:mn></mml:msup><mml:mo>=</mml:mo><mml:mn>0.20</mml:mn><mml:mspace width="0.25em"/><mml:msup><mml:mrow><mml:mo stretchy="false">(</mml:mo><mml:mtext>GeV</mml:mtext><mml:mo stretchy="false">/</mml:mo><mml:mi>c</mml:mi><mml:mo stretchy="false">)</mml:mo></mml:mrow><mml:mn>2</mml:mn></mml:msup></mml:math>
journal, July 2007

Sparveris, N. F.; Achenbach, P.; Gayoso, C. Ayerbe
Physics Letters B, Vol. 651, Issue 2-3
DOI: 10.1016/j.physletb.2007.04.056

Excited state baryon spectroscopy from lattice QCD
journal, October 2011

Edwards, Robert G.; Dudek, Jozef J.; Richards, David G.
Physical Review D, Vol. 84, Issue 7
DOI: 10.1103/PhysRevD.84.074508

$Q^{2}$ Dependence of Quadrupole Strength in the $γ^{*} p \to Δ^{+} (1232) \to p π^{0}$ Transition
journal, March 2002

Joo, K.; Smith, L. C.; Burkert, V. D.
Physical Review Letters, Vol. 88, Issue 12
DOI: 10.1103/PhysRevLett.88.122001

Measurement of the polarized structure function $σ_{{LT}^{'}}$ for $p (\vec{e} {, e}^{'} p) π^{0}$ in the $Δ (1232)$ resonance region
journal, September 2003

Joo, K.; Smith, L. C.; Burkert, V. D.
Physical Review C, Vol. 68, Issue 3
DOI: 10.1103/PhysRevC.68.032201

Measurement of the $R_{LT}$ response function for $π^{0}$ electroproduction at $Q^{2} = 0.070 (G e V / {c)}^{2}$ in the $\vec{N} Δ$ transition
journal, May 2003

Sparveris, N. F.; Alarcon, R.; Barkhuff, D.
Physical Review C, Vol. 67, Issue 5
DOI: 10.1103/PhysRevC.67.058201

$e \vec{p} ep π^{0}$ reaction studied in the $Δ (1232)$ mass region using polarization asymmetries
journal, September 2003

Biselli, A.; Adams, G. S.; Amaryan, M. J.
Physical Review C, Vol. 68, Issue 3
DOI: 10.1103/PhysRevC.68.035202

Recoil Polarization for $Δ$ Excitation in Pion Electroproduction
journal, August 2005

Kelly, J. J.; Roché, R. E.; Chai, Z.
Physical Review Letters, Vol. 95, Issue 10
DOI: 10.1103/PhysRevLett.95.102001

Measurement of the $N \to Δ^{+} (1232)$ Transition at High-Momentum Transfer by $π^{0}$ Electroproduction
journal, September 2006

Ungaro, M.; Stoler, P.; Aznauryan, I.
Physical Review Letters, Vol. 97, Issue 11
DOI: 10.1103/PhysRevLett.97.112003

First measurement of target and double spin asymmetries for $\vec{e} \vec{p} \to ep π^{0}$ in the nucleon resonance region above the $Δ (1232)$
journal, October 2008

Biselli, A. S.; Burkert, V. D.; Amaryan, M. J.
Physical Review C, Vol. 78, Issue 4
DOI: 10.1103/PhysRevC.78.045204

Measurement of the polarized structure function $σ_{L T^{'}}$ for $p (\vec{e}, e^{'} π^{+}) n$ in the $Δ (1232)$ resonance region
journal, October 2004

Joo, K.; Smith, L. C.; Aznauryan, I. G.
Physical Review C, Vol. 70, Issue 4
DOI: 10.1103/PhysRevC.70.042201

Single $π^{+}$ electroproduction on the proton in the first and second resonance regions at $0.25 {GeV}^{2} < Q^{2} < 0.65 {GeV}^{2}$
journal, February 2006

Egiyan, H.; Aznauryan, I. G.; Burkert, V. D.
Physical Review C, Vol. 73, Issue 2
DOI: 10.1103/PhysRevC.73.025204

Cross sections and beam asymmetries for $\vec{e} p \to e n π^{+}$ in the nucleon resonance region for $1.7 ⩽ Q^{2} ⩽ 4.5$ GeV $^{2}$
journal, January 2008

Park, K.; Burkert, V. D.; Kim, W.
Physical Review C, Vol. 77, Issue 1
DOI: 10.1103/PhysRevC.77.015208

Electroproduction of the $S_{11} (1535)$ resonance at high momentum transfer
journal, August 1999

Armstrong, C. S.; Stoler, P.; Adams, G. S.
Physical Review D, Vol. 60, Issue 5
DOI: 10.1103/PhysRevD.60.052004

The $ep \to e^{'} p η$ Reaction at and above the $S_{11} (1535)$ Baryon Resonance
journal, February 2001

Thompson, R.; Dytman, S.; Kim, K. Y.
Physical Review Letters, Vol. 86, Issue 9
DOI: 10.1103/PhysRevLett.86.1702

$Q^{2}$ dependence of the $S_{11} (1535)$ photocoupling and evidence for a $P$ -wave resonance in η electroproduction
journal, July 2007

Denizli, H.; Mueller, J.; Dytman, S.
Physical Review C, Vol. 76, Issue 1
DOI: 10.1103/PhysRevC.76.015204

Electroexcitation of the Roper resonance for $1.7 < Q^{2} < 4.5 {GeV}^{2}$ in $\vec{e} p \to en π^{+}$
journal, October 2008

Aznauryan, I. G.; Burkert, V. D.; Kim, W.
Physical Review C, Vol. 78, Issue 4
DOI: 10.1103/PhysRevC.78.045209

Electroproduction of $p π^{+} π^{-}$ off protons at $0.2 < Q^{2} < 0.6$ ${GeV}^{2}$ and $1.3 < W < 1.57$ GeV with the CLAS detector
journal, January 2009

Fedotov, G. V.; Mokeev, V. I.; Burkert, V. D.
Physical Review C, Vol. 79, Issue 1
DOI: 10.1103/PhysRevC.79.015204

Model analysis of the $ep \to e^{'} p π^{+} π^{-}$ electroproduction reaction on the proton
journal, October 2009

Mokeev, V. I.; Burkert, V. D.; Lee, T. -S. H.
Physical Review C, Vol. 80, Issue 4
DOI: 10.1103/PhysRevC.80.045212

Experimental study of the $P_{11} (1440)$ and $D_{13} (1520)$ resonances from the CLAS data on $e p \to e^{'} π^{+} π^{-} p^{'}$
journal, September 2012

Mokeev, V. I.; Burkert, V. D.; Elouadrhiri, L.
Physical Review C, Vol. 86, Issue 3
DOI: 10.1103/PhysRevC.86.035203

Studies of Nucleon Resonance Structure in Exclusive Meson Electroproduction
journal, June 2013

Aznauryan, I. G.; Bashir, A.; Braun, V. M.
International Journal of Modern Physics E, Vol. 22, Issue 06
DOI: 10.1142/S0218301313300154

Electromagnetic Meson Production in the Nucleon Resonance Region
journal, December 2004

Burkert, V. D.; Lee, T. -S. H.
International Journal of Modern Physics E, Vol. 13, Issue 06
DOI: 10.1142/S0218301304002545

Nucleon electromagnetic form factors and electroexcitation of low-lying nucleon resonances in a light-front relativistic quark model
journal, May 2012

Aznauryan, I. G.; Burkert, V. D.
Physical Review C, Vol. 85, Issue 5
DOI: 10.1103/PhysRevC.85.055202

$γ^{} N \to N^{} (1520)$ form factors in the spacelike region
journal, May 2014

Ramalho, G.; Peña, M. T.
Physical Review D, Vol. 89, Issue 9
DOI: 10.1103/PhysRevD.89.094016

Chiral bag model approach to $Δ$ electroproduction
journal, June 1997

Lu, D. H.; Thomas, A. W.; Williams, A. G.
Physical Review C, Vol. 55, Issue 6
DOI: 10.1103/PhysRevC.55.3108

Light baryon magnetic moments and $N \to Δ γ$ transition in a Lorentz covariant chiral quark approach
journal, October 2006

Faessler, Amand; Gutsche, Thomas; Holstein, Barry R.
Physical Review D, Vol. 74, Issue 7
DOI: 10.1103/PhysRevD.74.074010

Pion Cloud and the $Q^{2}$ Dependence of $γ^{*} N \leftrightarrow Δ$ Transition Form Factors
journal, November 1999

Kamalov, S. S.; Nan Yang, Shin
Physical Review Letters, Vol. 83, Issue 22
DOI: 10.1103/PhysRevLett.83.4494

$< ‘ γ^{*} \vec{N} Δ$ transition form factors: A new analysis of data on ${p (e, e}^{'} p) π^{0}$ at $Q^{2} = 2.8$ and $4.0 (GeV {/ c)}^{2}$
journal, August 2001

Kamalov, Sabit S.; Nan Yang, Shin; Drechsel, Dieter
Physical Review C, Vol. 64, Issue 3
DOI: 10.1103/PhysRevC.64.032201

Dynamical study of the $Δ$ excitation in ${N (e, e}^{'} π)$ reactions
journal, March 2001

Sato, T.; Lee, T. -S. H.
Physical Review C, Vol. 63, Issue 5
DOI: 10.1103/PhysRevC.63.055201

Dynamical coupled-channels effects on pion photoproduction
journal, April 2008

Juliá-Díaz, B.; Lee, T. -S. H.; Matsuyama, A.
Physical Review C, Vol. 77, Issue 4
DOI: 10.1103/PhysRevC.77.045205

Covariant model for the $γ N \to N (1535)$ transition at high momentum transfer
journal, August 2011

Ramalho, G.; Peña, M. T.
Physical Review D, Vol. 84, Issue 3
DOI: 10.1103/PhysRevD.84.033007

Valence quark contributions for the $γ N \to P_{11} (1440)$ form factors
journal, April 2010

Ramalho, G.; Tsushima, K.
Physical Review D, Vol. 81, Issue 7
DOI: 10.1103/PhysRevD.81.074020

Experimental Investigation of Pion Electroproduction
journal, February 1963

Hand, L. N.
Physical Review, Vol. 129, Issue 4
DOI: 10.1103/PhysRev.129.1834

The CEBAF large acceptance spectrometer (CLAS)
journal, May 2003

Mecking, B. A.; Adams, G.; Ahmad, S.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 503, Issue 3
DOI: 10.1016/S0168-9002(03)01001-5

ROOT — An object oriented data analysis framework
journal, April 1997

Brun, Rene; Rademakers, Fons
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 389, Issue 1-2
DOI: 10.1016/S0168-9002(97)00048-X

A unitary isobar model for pion photo- and electroproduction on the proton up to 1 GeV
journal, January 1999

Drechsel, D.; Hanstein, O.; Kamalov, S. S.
Nuclear Physics A, Vol. 645, Issue 1
DOI: 10.1016/S0375-9474(98)00572-7

QED radiative corrections in processes of exclusive pion electroproduction
journal, October 2002

Afanasev, A.; Akushevich, I.; Burkert, V.
Physical Review D, Vol. 66, Issue 7
DOI: 10.1103/PhysRevD.66.074004

Separated structure functions for exclusive $K^{+} Λ$ and $K^{+} Σ^{0}$ electroproduction at 5.5 GeV measured with CLAS
journal, February 2013

Carman, D. S.; Park, K.; Raue, B. A.
Physical Review C, Vol. 87, Issue 2
DOI: 10.1103/PhysRevC.87.025204

Multipole amplitudes of pion photoproduction on nucleons up to $2 GeV$ using dispersion relations and the unitary isobar model
journal, January 2003

Aznauryan, I. G.
Physical Review C, Vol. 67, Issue 1
DOI: 10.1103/PhysRevC.67.015209

Electroexcitation of nucleon resonances from CLAS data on single pion electroproduction
journal, November 2009

Aznauryan, I. G.; Burkert, V. D.; Biselli, A. S.
Physical Review C, Vol. 80, Issue 5
DOI: 10.1103/PhysRevC.80.055203

Electroexcitation of the $P_{33} (1232)$ , $P_{11} (1440)$ , $D_{13} (1520)$ , and $S_{11} (1535)$ at $Q^{2} = 0.4$ and $0.65 (GeV / c)^{2}$
journal, January 2005

Aznauryan, I. G.; Burkert, V. D.; Egiyan, H.
Physical Review C, Vol. 71, Issue 1
DOI: 10.1103/PhysRevC.71.015201

Electroexcitation of nucleon resonances at $Q^{2} = 0.65 (GeV / c)^{2}$ from a combined analysis of single- and double-pion electroproduction data
journal, October 2005

Aznauryan, I. G.; Burkert, V. D.; Fedotov, G. V.
Physical Review C, Vol. 72, Issue 4
DOI: 10.1103/PhysRevC.72.045201

Global analysis of proton elastic form factor data with two-photon exchange corrections
journal, September 2007

Arrington, J.; Melnitchouk, W.; Tjon, J. A.
Physical Review C, Vol. 76, Issue 3
DOI: 10.1103/PhysRevC.76.035205

Precise Measurement of the Neutron Magnetic Form Factor $G_{M}^{n}$ in the Few- ${GeV}^{2}$ Region
journal, May 2009

Lachniet, J.; Afanasev, A.; Arenhövel, H.
Physical Review Letters, Vol. 102, Issue 19
DOI: 10.1103/PhysRevLett.102.192001

Determination of the Pion Charge Form Factor at $Q^{2} = 1.60$ and $2.45 (GeV / c)^{2}$
journal, November 2006

Horn, T.; Aniol, K.; Arrington, J.
Physical Review Letters, Vol. 97, Issue 19
DOI: 10.1103/PhysRevLett.97.192001

Determination of the pion charge form factor for $Q^{2} =$ 0.60–1.60 GeV $^{2}$
journal, May 2007

Tadevosyan, V.; Blok, H. P.; Huber, G. M.
Physical Review C, Vol. 75, Issue 5
DOI: 10.1103/PhysRevC.75.055205

Measurements of the Electric Form Factor of the Neutron up to $Q^{2} = 3.4 {GeV}^{2}$ Using the Reaction $^{3} \vec{He} (\vec{e}, e^{'} n) p p$
journal, December 2010

Riordan, S.; Abrahamyan, S.; Craver, B.
Physical Review Letters, Vol. 105, Issue 26
DOI: 10.1103/PhysRevLett.105.262302

Baryon multipole moments in the single quark transition model
journal, March 1979

Cottingham, W. N.; Dunbar, I. H.
Zeitschrift f�r Physik C Particles and Fields, Vol. 2, Issue 1
DOI: 10.1007/BF01546235

Single quark transition model analysis of electromagnetic nucleon resonance excitations in the $[70, 1^{-}]$ supermultiplet
journal, March 2003

Burkert, V. D.; De Vita, R.; Battaglieri, M.
Physical Review C, Vol. 67, Issue 3
DOI: 10.1103/PhysRevC.67.035204

Photoproduction of $N^{*}$ Resonances in the Quark Model
journal, April 1966

Moorhouse, R. G.
Physical Review Letters, Vol. 16, Issue 17
DOI: 10.1103/PhysRevLett.16.772

Systematic study of longitudinal and transverse helicity amplitudes in the hypercentral constituent quark model
journal, December 2012

Santopinto, E.; Giannini, M. M.
Physical Review C, Vol. 86, Issue 6
DOI: 10.1103/PhysRevC.86.065202

QCD mixing effects in a gauge-invariant quark model for photo- and electroproduction of baryon resonances
journal, October 1990

Li, Zhenping; Close, Frank E.
Physical Review D, Vol. 42, Issue 7
DOI: 10.1103/PhysRevD.42.2207

Empirical Transverse Charge Densities in the Nucleon and the Nucleon-to- $Δ$ Transition
journal, January 2008

Carlson, Carl E.; Vanderhaeghen, Marc
Physical Review Letters, Vol. 100, Issue 3
DOI: 10.1103/PhysRevLett.100.032004

Review of Particle Physics
text, January 2008

Group, Particle Data; Amsler, C.; Doser, M.
Elsevier
DOI: 10.5167/uzh-11249

The ep -->e[prime]peta Reaction at and above the S11(1535) Baryon Resonance
text, January 2001

Adams, G. S.; Amaryan, M. J.; Anciant, E.
The American Physical Society
DOI: 10.17877/de290r-16123

Review of Particle Physics
text, January 2018

Tanabashi, M.; Hagiwara, K.; Hikasa, K.
Deutsches Elektronen-Synchrotron, DESY, Hamburg
DOI: 10.3204/pubdb-2018-03100

Systematic study of longitudinal and transverse helicity amplitudes in the hypercentral Constituent Quark Model
journal, January 2014

Giannini, M. M.
EPJ Web of Conferences, Vol. 73
DOI: 10.1051/epjconf/20147304017

Review of Particle Physics
text, January 2012

Beringer, J.; Arguin, J.; Barnett, R.
Deutsches Elektronen-Synchrotron, DESY, Hamburg
DOI: 10.3204/phppubdb-24149

Dynamical Coupled-Channels Effects on Pion Photoproduction
text, January 2007

Julia-Diaz, B.; Lee, T. -S. H.; Matsuyama, A.
arXiv
DOI: 10.48550/arxiv.0712.2283

Systematic study of longitudinal and transverse helicity amplitudes in the hypercentral Constituent Quark Model
text, January 2015

Giannini, M. M.
arXiv
DOI: 10.48550/arxiv.1506.05951

Recoil Polarization for Delta Excitation in Pion Electroproduction
text, January 2005

Kelly, J. J.
arXiv
DOI: 10.48550/arxiv.nucl-ex/0505024

Works referencing / citing this record:

Exclusive $$\pi ^{0}$$ π 0 Electroproduction in the Resonance Region
journal, August 2018

Markov, Nikolay; Joo, Kyungseon; Ungaro, Maurizio
Few-Body Systems, Vol. 59, Issue 6
DOI: 10.1007/s00601-018-1448-x

Transition form factors and helicity amplitudes for electroexcitation of negative- and positive parity nucleon resonances in a light-front quark model
text, January 2019

Obukhovsky, Igor T.; Faessler, Amand; Fedorov, Dimitry K.
arXiv
DOI: 10.48550/arxiv.1909.13787

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Title: Measurements of $$ep \to e^\prime π^+n$$ at W = 1.6 - 2.0 GeV and extraction of nucleon resonance electrocouplings at CLAS

Abstract

Citation Formats

Unitary isobar model --MAID2007 journal, October 2007

Review of Particle Physics journal, August 2014

Dynamical coupled-channel model of meson production reactions in the nucleon resonance region journal, February 2007

Quarks and the helicity structure of photoproduction amplitudes journal, January 1974

Multipole analysis of resonance photoproduction journal, February 1976

Partial-wave analysis of single pion photoproduction in the resonance region using fixed-t dispersion relations journal, October 1975

Relativistic quark model predictions for meson radiative transition form factors journal, October 1990

Electromagnetic properties of baryons in a relativistic quark model journal, November 2003

Lowest- Q2 measurement of the γp → Δ reaction: Probing the pionic contribution journal, December 2006

Electroexcitation of nucleon resonances journal, January 2012

Excited state baryon spectroscopy from lattice QCD journal, October 2011

Q 2 Dependence of Quadrupole Strength in the γ * p → Δ + ( 1232 ) → p π 0 Transition journal, March 2002

Measurement of the polarized structure function σ LT ′ for p ( e → , e ′ p ) π 0 in the Δ ( 1232 ) resonance region journal, September 2003

Measurement of the R LT response function for π 0 electroproduction at Q 2 = 0.070 ( G e V / c ) 2 in the N → Δ transition journal, May 2003

e p → ep π 0 reaction studied in the Δ ( 1232 ) mass region using polarization asymmetries journal, September 2003

Recoil Polarization for Δ Excitation in Pion Electroproduction journal, August 2005

Measurement of the N → Δ + ( 1232 ) Transition at High-Momentum Transfer by π 0 Electroproduction journal, September 2006

First measurement of target and double spin asymmetries for e → p → → ep π 0 in the nucleon resonance region above the Δ ( 1232 ) journal, October 2008

Measurement of the polarized structure function σ L T ′ for p ( e ⃗ , e ′ π + ) n in the Δ ( 1232 ) resonance region journal, October 2004

Single π + electroproduction on the proton in the first and second resonance regions at 0.25 GeV 2 < Q 2 < 0.65 GeV 2 journal, February 2006

Cross sections and beam asymmetries for e → p → e n π + in the nucleon resonance region for 1 . 7 ⩽ Q 2 ⩽ 4 . 5 GeV 2 journal, January 2008

Electroproduction of the S 11 ( 1535 ) resonance at high momentum transfer journal, August 1999

The ep → e ′ p η Reaction at and above the S 11 ( 1535 ) Baryon Resonance journal, February 2001

Q 2 dependence of the S 11 ( 1535 ) photocoupling and evidence for a P -wave resonance in η electroproduction journal, July 2007

Electroexcitation of the Roper resonance for 1.7 < Q 2 < 4.5 GeV 2 in e → p → en π + journal, October 2008

Electroproduction of p π + π − off protons at 0 . 2 < Q 2 < 0 . 6 GeV 2 and 1 . 3 < W < 1 . 57 GeV with the CLAS detector journal, January 2009

Model analysis of the ep → e ' p π + π − electroproduction reaction on the proton journal, October 2009

Experimental study of the P 11 ( 1440 ) and D 13 ( 1520 ) resonances from the CLAS data on e p → e ′ π + π − p ′ journal, September 2012

Studies of Nucleon Resonance Structure in Exclusive Meson Electroproduction journal, June 2013

Electromagnetic Meson Production in the Nucleon Resonance Region journal, December 2004

Nucleon electromagnetic form factors and electroexcitation of low-lying nucleon resonances in a light-front relativistic quark model journal, May 2012

γ * N → N * ( 1520 ) form factors in the spacelike region journal, May 2014

Chiral bag model approach to Δ electroproduction journal, June 1997

Light baryon magnetic moments and N → Δ γ transition in a Lorentz covariant chiral quark approach journal, October 2006

Pion Cloud and the Q 2 Dependence of γ * N ↔ Δ Transition Form Factors journal, November 1999

< ‘ γ * N → Δ transition form factors: A new analysis of data on p ( e , e ′ p ) π 0 at Q 2 = 2.8 and 4.0 ( GeV / c ) 2 journal, August 2001

Dynamical study of the Δ excitation in N ( e , e ′ π ) reactions journal, March 2001

Dynamical coupled-channels effects on pion photoproduction journal, April 2008

Covariant model for the γ N → N ( 1535 ) transition at high momentum transfer journal, August 2011

Valence quark contributions for the γ N → P 11 ( 1440 ) form factors journal, April 2010

Experimental Investigation of Pion Electroproduction journal, February 1963

The CEBAF large acceptance spectrometer (CLAS) journal, May 2003

ROOT — An object oriented data analysis framework journal, April 1997

A unitary isobar model for pion photo- and electroproduction on the proton up to 1 GeV journal, January 1999

QED radiative corrections in processes of exclusive pion electroproduction journal, October 2002

Separated structure functions for exclusive K + Λ and K + Σ 0 electroproduction at 5.5 GeV measured with CLAS journal, February 2013

Multipole amplitudes of pion photoproduction on nucleons up to 2 GeV using dispersion relations and the unitary isobar model journal, January 2003

Electroexcitation of nucleon resonances from CLAS data on single pion electroproduction journal, November 2009

Electroexcitation of the P 33 ( 1232 ) , P 11 ( 1440 ) , D 13 ( 1520 ) , and S 11 ( 1535 ) at Q 2 = 0.4 and 0.65 ( GeV / c ) 2 journal, January 2005

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Determination of the Pion Charge Form Factor at Q 2 = 1.60 and 2.45 ( GeV / c ) 2 journal, November 2006

Determination of the pion charge form factor for Q 2 = 0.60–1.60 GeV 2 journal, May 2007

Measurements of the Electric Form Factor of the Neutron up to Q 2 = 3.4 GeV 2 Using the Reaction 3 He → ( e → , e ′ n ) p p journal, December 2010

Baryon multipole moments in the single quark transition model journal, March 1979

Single quark transition model analysis of electromagnetic nucleon resonance excitations in the [ 7 0 , 1 − ] supermultiplet journal, March 2003

Photoproduction of N * Resonances in the Quark Model journal, April 1966

Systematic study of longitudinal and transverse helicity amplitudes in the hypercentral constituent quark model journal, December 2012

QCD mixing effects in a gauge-invariant quark model for photo- and electroproduction of baryon resonances journal, October 1990

Empirical Transverse Charge Densities in the Nucleon and the Nucleon-to- Δ Transition journal, January 2008

Review of Particle Physics text, January 2008

The ep -->e[prime]peta Reaction at and above the S11(1535) Baryon Resonance text, January 2001

Review of Particle Physics text, January 2018

Systematic study of longitudinal and transverse helicity amplitudes in the hypercentral Constituent Quark Model journal, January 2014

Review of Particle Physics text, January 2012

Dynamical Coupled-Channels Effects on Pion Photoproduction text, January 2007

Systematic study of longitudinal and transverse helicity amplitudes in the hypercentral Constituent Quark Model text, January 2015

Recoil Polarization for Delta Excitation in Pion Electroproduction text, January 2005

Exclusive $$\pi ^{0}$$ π 0 Electroproduction in the Resonance Region journal, August 2018

Transition form factors and helicity amplitudes for electroexcitation of negative- and positive parity nucleon resonances in a light-front quark model text, January 2019

Unitary isobar model --MAID2007
journal, October 2007

Review of Particle Physics
journal, August 2014

Dynamical coupled-channel model of meson production reactions in the nucleon resonance region
journal, February 2007

Quarks and the helicity structure of photoproduction amplitudes
journal, January 1974

Multipole analysis of resonance photoproduction
journal, February 1976

Partial-wave analysis of single pion photoproduction in the resonance region using fixed-t dispersion relations
journal, October 1975

Relativistic quark model predictions for meson radiative transition form factors
journal, October 1990

Electromagnetic properties of baryons in a relativistic quark model
journal, November 2003

Lowest- Q2 measurement of the γp → Δ reaction: Probing the pionic contribution
journal, December 2006

Electroexcitation of nucleon resonances
journal, January 2012

Excited state baryon spectroscopy from lattice QCD
journal, October 2011

$Q^{2}$ Dependence of Quadrupole Strength in the $γ^{*} p \to Δ^{+} (1232) \to p π^{0}$ Transition
journal, March 2002

Measurement of the polarized structure function $σ_{{LT}^{'}}$ for $p (\vec{e} {, e}^{'} p) π^{0}$ in the $Δ (1232)$ resonance region
journal, September 2003

Measurement of the $R_{LT}$ response function for $π^{0}$ electroproduction at $Q^{2} = 0.070 (G e V / {c)}^{2}$ in the $\vec{N} Δ$ transition
journal, May 2003

$e \vec{p} ep π^{0}$ reaction studied in the $Δ (1232)$ mass region using polarization asymmetries
journal, September 2003

Recoil Polarization for $Δ$ Excitation in Pion Electroproduction
journal, August 2005

Measurement of the $N \to Δ^{+} (1232)$ Transition at High-Momentum Transfer by $π^{0}$ Electroproduction
journal, September 2006

First measurement of target and double spin asymmetries for $\vec{e} \vec{p} \to ep π^{0}$ in the nucleon resonance region above the $Δ (1232)$
journal, October 2008

Measurement of the polarized structure function $σ_{L T^{'}}$ for $p (\vec{e}, e^{'} π^{+}) n$ in the $Δ (1232)$ resonance region
journal, October 2004

Single $π^{+}$ electroproduction on the proton in the first and second resonance regions at $0.25 {GeV}^{2} < Q^{2} < 0.65 {GeV}^{2}$
journal, February 2006

Cross sections and beam asymmetries for $\vec{e} p \to e n π^{+}$ in the nucleon resonance region for $1.7 ⩽ Q^{2} ⩽ 4.5$ GeV $^{2}$
journal, January 2008

Electroproduction of the $S_{11} (1535)$ resonance at high momentum transfer
journal, August 1999

The $ep \to e^{'} p η$ Reaction at and above the $S_{11} (1535)$ Baryon Resonance
journal, February 2001

$Q^{2}$ dependence of the $S_{11} (1535)$ photocoupling and evidence for a $P$ -wave resonance in η electroproduction
journal, July 2007

Electroexcitation of the Roper resonance for $1.7 < Q^{2} < 4.5 {GeV}^{2}$ in $\vec{e} p \to en π^{+}$
journal, October 2008

Electroproduction of $p π^{+} π^{-}$ off protons at $0.2 < Q^{2} < 0.6$ ${GeV}^{2}$ and $1.3 < W < 1.57$ GeV with the CLAS detector
journal, January 2009

Model analysis of the $ep \to e^{'} p π^{+} π^{-}$ electroproduction reaction on the proton
journal, October 2009

Experimental study of the $P_{11} (1440)$ and $D_{13} (1520)$ resonances from the CLAS data on $e p \to e^{'} π^{+} π^{-} p^{'}$
journal, September 2012

Studies of Nucleon Resonance Structure in Exclusive Meson Electroproduction
journal, June 2013

Electromagnetic Meson Production in the Nucleon Resonance Region
journal, December 2004

Nucleon electromagnetic form factors and electroexcitation of low-lying nucleon resonances in a light-front relativistic quark model
journal, May 2012

$γ^{} N \to N^{} (1520)$ form factors in the spacelike region
journal, May 2014

Chiral bag model approach to $Δ$ electroproduction
journal, June 1997

Light baryon magnetic moments and $N \to Δ γ$ transition in a Lorentz covariant chiral quark approach
journal, October 2006

Pion Cloud and the $Q^{2}$ Dependence of $γ^{*} N \leftrightarrow Δ$ Transition Form Factors
journal, November 1999

$< ‘ γ^{*} \vec{N} Δ$ transition form factors: A new analysis of data on ${p (e, e}^{'} p) π^{0}$ at $Q^{2} = 2.8$ and $4.0 (GeV {/ c)}^{2}$
journal, August 2001

Dynamical study of the $Δ$ excitation in ${N (e, e}^{'} π)$ reactions
journal, March 2001

Dynamical coupled-channels effects on pion photoproduction
journal, April 2008

Covariant model for the $γ N \to N (1535)$ transition at high momentum transfer
journal, August 2011

Valence quark contributions for the $γ N \to P_{11} (1440)$ form factors
journal, April 2010

Experimental Investigation of Pion Electroproduction
journal, February 1963

The CEBAF large acceptance spectrometer (CLAS)
journal, May 2003

ROOT — An object oriented data analysis framework
journal, April 1997

A unitary isobar model for pion photo- and electroproduction on the proton up to 1 GeV
journal, January 1999

QED radiative corrections in processes of exclusive pion electroproduction
journal, October 2002

Separated structure functions for exclusive $K^{+} Λ$ and $K^{+} Σ^{0}$ electroproduction at 5.5 GeV measured with CLAS
journal, February 2013

Multipole amplitudes of pion photoproduction on nucleons up to $2 GeV$ using dispersion relations and the unitary isobar model
journal, January 2003

Electroexcitation of nucleon resonances from CLAS data on single pion electroproduction
journal, November 2009

Electroexcitation of the $P_{33} (1232)$ , $P_{11} (1440)$ , $D_{13} (1520)$ , and $S_{11} (1535)$ at $Q^{2} = 0.4$ and $0.65 (GeV / c)^{2}$
journal, January 2005

Electroexcitation of nucleon resonances at $Q^{2} = 0.65 (GeV / c)^{2}$ from a combined analysis of single- and double-pion electroproduction data
journal, October 2005

Global analysis of proton elastic form factor data with two-photon exchange corrections
journal, September 2007

Precise Measurement of the Neutron Magnetic Form Factor $G_{M}^{n}$ in the Few- ${GeV}^{2}$ Region
journal, May 2009

Determination of the Pion Charge Form Factor at $Q^{2} = 1.60$ and $2.45 (GeV / c)^{2}$
journal, November 2006

Determination of the pion charge form factor for $Q^{2} =$ 0.60–1.60 GeV $^{2}$
journal, May 2007

Measurements of the Electric Form Factor of the Neutron up to $Q^{2} = 3.4 {GeV}^{2}$ Using the Reaction $^{3} \vec{He} (\vec{e}, e^{'} n) p p$
journal, December 2010

Baryon multipole moments in the single quark transition model
journal, March 1979

Single quark transition model analysis of electromagnetic nucleon resonance excitations in the $[70, 1^{-}]$ supermultiplet
journal, March 2003

Photoproduction of $N^{*}$ Resonances in the Quark Model
journal, April 1966

Systematic study of longitudinal and transverse helicity amplitudes in the hypercentral constituent quark model
journal, December 2012

QCD mixing effects in a gauge-invariant quark model for photo- and electroproduction of baryon resonances
journal, October 1990

Empirical Transverse Charge Densities in the Nucleon and the Nucleon-to- $Δ$ Transition
journal, January 2008

Review of Particle Physics
text, January 2008

The ep -->e[prime]peta Reaction at and above the S11(1535) Baryon Resonance
text, January 2001

Review of Particle Physics
text, January 2018

Systematic study of longitudinal and transverse helicity amplitudes in the hypercentral Constituent Quark Model
journal, January 2014

Review of Particle Physics
text, January 2012

Dynamical Coupled-Channels Effects on Pion Photoproduction
text, January 2007

Systematic study of longitudinal and transverse helicity amplitudes in the hypercentral Constituent Quark Model
text, January 2015

Recoil Polarization for Delta Excitation in Pion Electroproduction
text, January 2005

Exclusive $$\pi ^{0}$$ π 0 Electroproduction in the Resonance Region
journal, August 2018

Transition form factors and helicity amplitudes for electroexcitation of negative- and positive parity nucleon resonances in a light-front quark model
text, January 2019