Measurements of ep→e'π+π-p' cross sections with CLAS at 1.40GeV<W<2.0 GeV and 2.0GeV2<Q2<5.0GeV2

doi:10.1103/PhysRevC.96.025209

Title: Measurements of $e p \to e^{'} π^{+} π^{-} p^{'}$ cross sections with CLAS at $1.40 GeV < W < 2.0$ GeV and $2.0 {GeV}^{2} < Q^{2} < 5.0 {GeV}^{2}$

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Abstract

This paper reports new exclusive cross sections for $$e p \to e' \pi^+ \pi^- p'$$ using the CLAS detector at Jefferson Laboratory. These results are presented for the first time at photon virtualities 2.0 GeV ² < Q ² < 5.0 GeV ² in the center-of-mass energy range 1.4 GeV < W < 2.0 GeV, which covers a large part of the nucleon resonance region. Using a model developed for the phenomenological analysis of electroproduction data, we see strong indications that the relative contributions from the resonant cross sections at W < 1.74 GeV increase with $Q^2$. These data considerably extend the kinematic reach of previous measurements. Exclusive $$e p \to e' \pi^+ \pi^- p'$$ cross section measurements are of particular importance for the extraction of resonance electrocouplings in the mass range above 1.6 GeV.

Authors:: Isupov, E. L.; Burkert, V. D.; Carman, D. S.; Gothe, R. W.; Hicks, K.; Ishkhanov, B. S.; Mokeev, V. I.; Adhikari, K. P.; Adhikari, S.; Adikaram, D.; Akbar, Z.; Amaryan, M. J.; Anefalos Pereira, S.; Avakian, H.; Ball, J.; Baltzell, N. A.; Battaglieri, M.; Batourine, V.; Bedlinskiy, I.; Biselli, A. S. more »« less

Publication Date:: Tue Aug 01 00:00:00 EDT 2017

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

Sponsoring Org.:: USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)

Contributing Org.:: CLAS Collaboration

OSTI Identifier:: 1377016

Report Number(s):: JLAB-PHY-17-2453; DOE/OR/23177-4130; arXiv:1705.01901
Journal ID: ISSN 2469-9985; PRVCAN

DOE Contract Number:: AC05-06OR23177

Resource Type:: Journal Article

Resource Relation:: Journal Name: Physical Review C; Journal Volume: 96; Journal Issue: 2

Country of Publication:: United States

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats


                    Isupov, E. L., Burkert, V. D., Carman, D. S., Gothe, R. W., Hicks, K., Ishkhanov, B. S., Mokeev, V. I., Adhikari, K. P., Adhikari, S., Adikaram, D., Akbar, Z., Amaryan, M. J., Anefalos Pereira, S., Avakian, H., Ball, J., Baltzell, N. A., Battaglieri, M., Batourine, V., Bedlinskiy, I., Biselli, A. S., Briscoe, W. J., Brooks, W. K., Bültmann, S., Cao, T., Celentano, A., Charles, G., Chetry, T., Ciullo, G., Clark, L., 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., Dupre, R., El Alaoui, A., El Fassi, L., Elouadrhiri, L., Eugenio, P., Fedotov, G., Fersch, R., Filippi, A., Fleming, J. A., Forest, T. A., Garçon, M., Gavalian, G., Ghandilyan, Y., Gilfoyle, G. P., Giovanetti, K. L., Girod, F. X., Glazier, D. I., Gleason, C., Golovatch, E., Griffioen, K. A., Guidal, M., Guo, L., Hafidi, K., Hakobyan, H., Hanretty, C., Harrison, N., Hattawy, M., Heddle, D., Holtrop, M., Hughes, S. M., Ilieva, Y., Ireland, D. G., Jenkins, D., Jiang, H., Joo, K., Joosten, S., Keller, D., Khachatryan, G., Khandaker, M., Kim, A., Kim, W., Klein, A., Klein, F. J., Kubarovsky, V., Kuleshov, S. V., Kunkel, M., Lanza, L., Lenisa, P., Livingston, K., Lu, H. Y., MacGregor, I. J.  D., Markov, N., McKinnon, B., Mineeva, T., Mirazita, M., Montgomery, R. A., Movsisyan, A., Munevar, E., Munoz Camacho, C., Murdoch, G., Nadel-Turonski, P., Niccolai, S., Niculescu, G., Niculescu, I., Osipenko, M., Paolone, M., Paremuzyan, R., Park, K., Pasyuk, E., Phelps, W., Pogorelko, O., Price, J. W., Procureur, S., Prok, Y., Protopopescu, D., Raue, B. A., Ripani, M., Riser, D., Ritchie, B. G., Rizzo, A., Sabatié, F., Salgado, C., Schumacher, R. A., Sharabian, Y. G., Simonyan, A., Skorodumina, Iu., Smith, G. D., Sokhan, D., Sparveris, N., Stankovic, I., Strakovsky, I. I., Strauch, S., Taiuti, M., Tian, Ye, Torayev, B., Trivedi, A., Ungaro, M., Voskanyan, H., Voutier, E., Walford, N. K., Wei, X., Wood, M. H., Zachariou, N., and Zhang, J. Measurements of ep→e'π+π-p' cross sections with CLAS at 1.40GeV<W<2.0 GeV and 2.0GeV2<Q2<5.0GeV2.  United States: N. p., 2017. 
        Web.  doi:10.1103/PhysRevC.96.025209.

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                    Isupov, E. L., Burkert, V. D., Carman, D. S., Gothe, R. W., Hicks, K., Ishkhanov, B. S., Mokeev, V. I., Adhikari, K. P., Adhikari, S., Adikaram, D., Akbar, Z., Amaryan, M. J., Anefalos Pereira, S., Avakian, H., Ball, J., Baltzell, N. A., Battaglieri, M., Batourine, V., Bedlinskiy, I., Biselli, A. S., Briscoe, W. J., Brooks, W. K., Bültmann, S., Cao, T., Celentano, A., Charles, G., Chetry, T., Ciullo, G., Clark, L., 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., Dupre, R., El Alaoui, A., El Fassi, L., Elouadrhiri, L., Eugenio, P., Fedotov, G., Fersch, R., Filippi, A., Fleming, J. A., Forest, T. A., Garçon, M., Gavalian, G., Ghandilyan, Y., Gilfoyle, G. P., Giovanetti, K. L., Girod, F. X., Glazier, D. I., Gleason, C., Golovatch, E., Griffioen, K. A., Guidal, M., Guo, L., Hafidi, K., Hakobyan, H., Hanretty, C., Harrison, N., Hattawy, M., Heddle, D., Holtrop, M., Hughes, S. M., Ilieva, Y., Ireland, D. G., Jenkins, D., Jiang, H., Joo, K., Joosten, S., Keller, D., Khachatryan, G., Khandaker, M., Kim, A., Kim, W., Klein, A., Klein, F. J., Kubarovsky, V., Kuleshov, S. V., Kunkel, M., Lanza, L., Lenisa, P., Livingston, K., Lu, H. Y., MacGregor, I. J.  D., Markov, N., McKinnon, B., Mineeva, T., Mirazita, M., Montgomery, R. A., Movsisyan, A., Munevar, E., Munoz Camacho, C., Murdoch, G., Nadel-Turonski, P., Niccolai, S., Niculescu, G., Niculescu, I., Osipenko, M., Paolone, M., Paremuzyan, R., Park, K., Pasyuk, E., Phelps, W., Pogorelko, O., Price, J. W., Procureur, S., Prok, Y., Protopopescu, D., Raue, B. A., Ripani, M., Riser, D., Ritchie, B. G., Rizzo, A., Sabatié, F., Salgado, C., Schumacher, R. A., Sharabian, Y. G., Simonyan, A., Skorodumina, Iu., Smith, G. D., Sokhan, D., Sparveris, N., Stankovic, I., Strakovsky, I. I., Strauch, S., Taiuti, M., Tian, Ye, Torayev, B., Trivedi, A., Ungaro, M., Voskanyan, H., Voutier, E., Walford, N. K., Wei, X., Wood, M. H., Zachariou, N., & Zhang, J. Measurements of ep→e'π+π-p' cross sections with CLAS at 1.40GeV<W<2.0 GeV and 2.0GeV2<Q2<5.0GeV2.  United States.  doi:10.1103/PhysRevC.96.025209.

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                    Isupov, E. L., Burkert, V. D., Carman, D. S., Gothe, R. W., Hicks, K., Ishkhanov, B. S., Mokeev, V. I., Adhikari, K. P., Adhikari, S., Adikaram, D., Akbar, Z., Amaryan, M. J., Anefalos Pereira, S., Avakian, H., Ball, J., Baltzell, N. A., Battaglieri, M., Batourine, V., Bedlinskiy, I., Biselli, A. S., Briscoe, W. J., Brooks, W. K., Bültmann, S., Cao, T., Celentano, A., Charles, G., Chetry, T., Ciullo, G., Clark, L., 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., Dupre, R., El Alaoui, A., El Fassi, L., Elouadrhiri, L., Eugenio, P., Fedotov, G., Fersch, R., Filippi, A., Fleming, J. A., Forest, T. A., Garçon, M., Gavalian, G., Ghandilyan, Y., Gilfoyle, G. P., Giovanetti, K. L., Girod, F. X., Glazier, D. I., Gleason, C., Golovatch, E., Griffioen, K. A., Guidal, M., Guo, L., Hafidi, K., Hakobyan, H., Hanretty, C., Harrison, N., Hattawy, M., Heddle, D., Holtrop, M., Hughes, S. M., Ilieva, Y., Ireland, D. G., Jenkins, D., Jiang, H., Joo, K., Joosten, S., Keller, D., Khachatryan, G., Khandaker, M., Kim, A., Kim, W., Klein, A., Klein, F. J., Kubarovsky, V., Kuleshov, S. V., Kunkel, M., Lanza, L., Lenisa, P., Livingston, K., Lu, H. Y., MacGregor, I. J.  D., Markov, N., McKinnon, B., Mineeva, T., Mirazita, M., Montgomery, R. A., Movsisyan, A., Munevar, E., Munoz Camacho, C., Murdoch, G., Nadel-Turonski, P., Niccolai, S., Niculescu, G., Niculescu, I., Osipenko, M., Paolone, M., Paremuzyan, R., Park, K., Pasyuk, E., Phelps, W., Pogorelko, O., Price, J. W., Procureur, S., Prok, Y., Protopopescu, D., Raue, B. A., Ripani, M., Riser, D., Ritchie, B. G., Rizzo, A., Sabatié, F., Salgado, C., Schumacher, R. A., Sharabian, Y. G., Simonyan, A., Skorodumina, Iu., Smith, G. D., Sokhan, D., Sparveris, N., Stankovic, I., Strakovsky, I. I., Strauch, S., Taiuti, M., Tian, Ye, Torayev, B., Trivedi, A., Ungaro, M., Voskanyan, H., Voutier, E., Walford, N. K., Wei, X., Wood, M. H., Zachariou, N., and Zhang, J. Tue .  
        "Measurements of ep→e'π+π-p' cross sections with CLAS at 1.40GeV<W<2.0 GeV and 2.0GeV2<Q2<5.0GeV2".  United States.  
        doi:10.1103/PhysRevC.96.025209.  https://www.osti.gov/servlets/purl/1377016.

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@article{osti_1377016,

  title        = {Measurements of ep→e'π+π-p' cross sections with CLAS at 1.40GeV<W<2.0 GeV and 2.0GeV2<Q2<5.0GeV2},

  author       = {Isupov, E. L. and Burkert, V. D. and Carman, D. S. and Gothe, R. W. and Hicks, K. and Ishkhanov, B. S. and Mokeev, V. I. and Adhikari, K. P. and Adhikari, S. and Adikaram, D. and Akbar, Z. and Amaryan, M. J. and Anefalos Pereira, S. and Avakian, H. and Ball, J. and Baltzell, N. A. and Battaglieri, M. and Batourine, V. and Bedlinskiy, I. and Biselli, A. S. and Briscoe, W. J. and Brooks, W. K. and Bültmann, S. and Cao, T. and Celentano, A. and Charles, G. and Chetry, T. and Ciullo, G. and Clark, L. 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 Dupre, R. and El Alaoui, A. and El Fassi, L. and Elouadrhiri, L. and Eugenio, P. and Fedotov, G. and Fersch, R. and Filippi, A. and Fleming, J. A. and Forest, T. A. and Garçon, M. and Gavalian, G. and Ghandilyan, Y. and Gilfoyle, G. P. and Giovanetti, K. L. and Girod, F. X. and Glazier, D. I. and Gleason, C. and Golovatch, E. and Griffioen, K. A. and Guidal, M. and Guo, L. and Hafidi, K. and Hakobyan, H. and Hanretty, C. and Harrison, N. and Hattawy, M. and Heddle, D. and Holtrop, M. and Hughes, S. M. and Ilieva, Y. and Ireland, D. G. and Jenkins, D. and Jiang, H. and Joo, K. and Joosten, S. and Keller, D. and Khachatryan, G. and Khandaker, M. and Kim, A. and Kim, W. and Klein, A. and Klein, F. J. and Kubarovsky, V. and Kuleshov, S. V. and Kunkel, M. and Lanza, L. and Lenisa, P. and Livingston, K. and Lu, H. Y. and MacGregor, I. J.  D. and Markov, N. and McKinnon, B. and Mineeva, T. and Mirazita, M. and Montgomery, R. A. and Movsisyan, A. and Munevar, E. and Munoz Camacho, C. and Murdoch, G. and Nadel-Turonski, P. and Niccolai, S. and Niculescu, G. and Niculescu, I. and Osipenko, M. and Paolone, M. and Paremuzyan, R. and Park, K. and Pasyuk, E. and Phelps, W. and Pogorelko, O. and Price, J. W. and Procureur, S. and Prok, Y. and Protopopescu, D. and Raue, B. A. and Ripani, M. and Riser, D. and Ritchie, B. G. and Rizzo, A. and Sabatié, F. and Salgado, C. and Schumacher, R. A. and Sharabian, Y. G. and Simonyan, A. and Skorodumina, Iu. and Smith, G. D. and Sokhan, D. and Sparveris, N. and Stankovic, I. and Strakovsky, I. I. and Strauch, S. and Taiuti, M. and Tian, Ye and Torayev, B. and Trivedi, A. and Ungaro, M. and Voskanyan, H. and Voutier, E. and Walford, N. K. and Wei, X. and Wood, M. H. and Zachariou, N. and Zhang, J.},

  abstractNote = {This paper reports new exclusive cross sections for $e p \to e' \pi^+ \pi^- p'$ using the CLAS detector at Jefferson Laboratory. These results are presented for the first time at photon virtualities 2.0 GeV2 < Q2 < 5.0 GeV2 in the center-of-mass energy range 1.4 GeV < W < 2.0 GeV, which covers a large part of the nucleon resonance region. Using a model developed for the phenomenological analysis of electroproduction data, we see strong indications that the relative contributions from the resonant cross sections at W < 1.74 GeV increase with $Q^2$. These data considerably extend the kinematic reach of previous measurements. Exclusive $e p \to e' \pi^+ \pi^- p'$ cross section measurements are of particular importance for the extraction of resonance electrocouplings in the mass range above 1.6 GeV.},

  doi          = {10.1103/PhysRevC.96.025209},

  journal      = {Physical Review C},

  number       = 2,

  volume       = 96,

  place        = {United States},

  year         = {Tue Aug 01 00:00:00 EDT 2017},

  month        = {Tue Aug 01 00:00:00 EDT 2017}

}

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DOI: 10.1103/PhysRevC.96.025209

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Measurements of $e p \to e^{'} π^{+} π^{-} p^{'}$ cross sections with CLAS at $1.40 GeV < W < 2.0$ GeV and $2.0 {GeV}^{2} < Q^{2} < 5.0 {GeV}^{2}$

Isupov, E. L. ; Burkert, V. D. ; Carman, D. S. ; ... August 2017 - Physical Review C
Cited by 2
DOI: 10.1103/PhysRevC.96.025209
Target and beam-target spin asymmetries in exclusive pion electroproduction for $Q^{2} > 1 {GeV}^{2}$ . II. $e p \to e π^{0} p$

Bosted, P. E. ; Amaryan, M. J. ; Anefalos Pereira, S. ; ... March 2017 - Physical Review C

Beam-target double-spin asymmetries and target single-spin asymmetries were measured for the exclusive π ⁺ electroproduction reaction γ*p→nπ ⁺. The results were obtained from scattering of 6-GeV longitudinally polarized electrons off longitudinally polarized protons using the CEBAF Large Acceptance Spectrometer at Jefferson Laboratory. The kinematic range covered is 1.1 < W < 3 GeV and 1 < Q ² < 6GeV ². Results were obtained for about 6000 bins in W, Q ², cos(θ*), and Φ*. Except at forward angles, very large target-spin asymmetries are observed over the entire W region. Reasonable agreement is found with phenomenological fits to previous datamore »« less
DOI: 10.1103/PhysRevC.95.035207

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Target and beam-target spin asymmetries in exclusive pion electroproduction for $Q^{2} > 1 {GeV}^{2}$ . I. $e p \to e π^{+} n$

Bosted, P. E. ; Amaryan, M. J. ; Anefalos Pereira, S. ; ... March 2017 - Physical Review C
DOI: 10.1103/PhysRevC.95.035206
Target and beam-target spin asymmetries in exclusive pion electroproduction for $Q^{2} > 1 {GeV}^{2}$ . I. $e p \to e π^{+} n$

Bosted, P. E. ; Amaryan, M. J. ; Anefalos Pereira, S. ; ... March 2017 - Physical Review C

Beam-target double-spin asymmetries and target single-spin asymmetries were measured for the exclusive π+ electroproduction reaction γ*p → nπ ⁺. The results were obtained from scattering of 6-GeV longitudinally polarized electrons off longitudinally polarized protons using the CEBAF Large Acceptance Spectrometer at Jefferson Laboratory. The kinematic range covered is 1.1 < W < 3 GeV and 1 < Q ² < 6GeV ². Results were obtained for about 6000 bins in W, Q ², cos(θ*), and Φ*. Except at forward angles, very large target-spin asymmetries are observed over the entire W region. Reasonable agreement is found with phenomenological fits to previousmore »« less
DOI: 10.1103/PhysRevC.95.035206

Full Text Available
Target and beam-target spin asymmetries in exclusive pion electroproduction for $Q^{2} > 1 {GeV}^{2}$ . I. $e p \to e π^{+} n$

Bosted, P. E. ; Amaryan, M. J. ; Anefalos Pereira, S. ; ... March 2017 - Physical Review C

Beam-target double-spin asymmetries and target single-spin asymmetries were measured for the exclusive pi(+) electroproduction reaction. gamma(*) p -> n pi(+). The results were obtained from scattering of 6-GeV longitudinally polarized electrons off longitudinally polarized protons using the CEBAF Large Acceptance Spectrometer at Jefferson Laboratory. The kinematic range covered is 1.1 < W < 3 GeV and 1 < Q(2) < 6 GeV2. Results were obtained for about 6000 bins in W, Q(2), cos(theta(*)), and phi(*). Except at forward angles, very large target-spin asymmetries are observed over the entire W region. Reasonable agreement is found with phenomenological fits to previous datamore »« less
DOI: 10.1103/PhysRevC.95.035206

Full Text Available

Title: Measurements of e p → e ' π + π - p ' cross sections with CLAS at 1.40 GeV < W < 2.0 GeV and 2.0 GeV 2 < Q 2 < 5.0 GeV 2

Abstract

Citation Formats

Measurements of e p → e ′ π + π − p ′ cross sections with CLAS at 1.40 GeV < W < 2.0 GeV and 2.0 GeV 2 < Q 2 < 5.0 GeV 2

Target and beam-target spin asymmetries in exclusive pion electroproduction for Q 2 > 1 GeV 2 . II. e p → e π 0 p

Target and beam-target spin asymmetries in exclusive pion electroproduction for Q 2 > 1 GeV 2 . I. e p → e π + n

Target and beam-target spin asymmetries in exclusive pion electroproduction for Q 2 > 1 GeV 2 . I. e p → e π + n

Target and beam-target spin asymmetries in exclusive pion electroproduction for Q 2 > 1 GeV 2 . I. e p → e π + n

Title: Measurements of $e p \to e^{'} π^{+} π^{-} p^{'}$ cross sections with CLAS at $1.40 GeV < W < 2.0$ GeV and $2.0 {GeV}^{2} < Q^{2} < 5.0 {GeV}^{2}$

Measurements of $e p \to e^{'} π^{+} π^{-} p^{'}$ cross sections with CLAS at $1.40 GeV < W < 2.0$ GeV and $2.0 {GeV}^{2} < Q^{2} < 5.0 {GeV}^{2}$

Target and beam-target spin asymmetries in exclusive pion electroproduction for $Q^{2} > 1 {GeV}^{2}$ . II. $e p \to e π^{0} p$

Target and beam-target spin asymmetries in exclusive pion electroproduction for $Q^{2} > 1 {GeV}^{2}$ . I. $e p \to e π^{+} n$

Target and beam-target spin asymmetries in exclusive pion electroproduction for $Q^{2} > 1 {GeV}^{2}$ . I. $e p \to e π^{+} n$

Target and beam-target spin asymmetries in exclusive pion electroproduction for $Q^{2} > 1 {GeV}^{2}$ . I. $e p \to e π^{+} n$