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Title: Partial wave analysis of the reaction γ p p ω and the search for nucleon resonances

Abstract

We performed an event-based partial wave analysis (PWA) of the reaction γ p -> p ω on a high-statistics dataset obtained using the CLAS at Jefferson Lab for center-of-mass energies from threshold up to 2.4 GeV. This analysis benefits from access to the world's first high precision spin density matrix element measurements, available to the event-based PWA through the decay distribution of omega-> π + π - π 0. The data confirm the dominance of the t-channel π 0 exchange amplitude in the forward direction. The dominant resonance contributions are consistent with the previously identified states F[15](1680) and D[13](1700) near threshold, as well as the G[17](2190) at higher energies. Suggestive evidence for the presence of a J(P)=5/2 + state around 2 GeV, a "missing" state, has also been found. Evidence for other states is inconclusive.

Authors:
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Publication Date:
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:
980895
Report Number(s):
JLAB-PHY-09-1052; DOE/OR/23177-0959
Journal ID: ISSN 0556-2813; PRVCAN; JLAB-EXP-04-021; TRN: US1003960
Grant/Contract Number:  
AC05-06OR23177
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 80; Journal Issue: 6; 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; 74 ATOMIC AND MOLECULAR PHYSICS; ACCURACY; AMPLITUDES; DATA; DECAY; DENSITY MATRIX; DISTRIBUTION; ELEMENTS; NUCLEONS; PARTIAL WAVES; RESONANCE; SPIN; T CHANNEL; WELLS; YIELDS

Citation Formats

Williams, M., Applegate, D., Bellis, M., Meyer, C. A., Adhikari, K. P., Anghinolfi, M., Baghdasaryan, H., Ball, J., Battaglieri, M., Bedlinskiy, I., Berman, B. L., Biselli, A. S., Briscoe, W. J., Brooks, W. K., Burkert, V. D., Careccia, S. L., Carman, D. S., Cole, P. L., Collins, P., Crede, V., D’Angelo, A., Daniel, A., De Vita, R., De Sanctis, E., Deur, A., Dey, B., Dhamija, S., Dickson, R., Djalali, C., Dodge, G. E., Doughty, D., Dugger, M., Dupre, R., Alaoui, A. El, Elouadrhiri, L., Eugenio, P., Fedotov, G., Fegan, S., Fradi, A., Gabrielyan, M. Y., Garçon, M., Gilfoyle, G. P., Giovanetti, K. L., Girod, F. X., Gohn, W., Golovatch, E., Gothe, R. W., Griffioen, K. A., Guidal, M., Guler, N., Guo, L., Hafidi, K., Hakobyan, H., Hanretty, C., Hassall, N., Hicks, K., Holtrop, M., Ilieva, Y., Ireland, D. G., Ishkhanov, B. S., Isupov, E. L., Jawalkar, S. S., Jo, H. S., Johnstone, J. R., Joo, K., Keller, D., Khandaker, M., Khetarpal, P., Kim, W., Klein, A., Klein, F. J., Krahn, Z., Kubarovsky, V., Kuleshov, S. V., Kuznetsov, V., Livingston, K., Lu, H. Y., Mayer, M., McAndrew, J., McCracken, M. E., McKinnon, B., Mirazita, M., Mokeev, V., Moreno, B., Moriya, K., Morrison, B., Munevar, E., Nadel-Turonski, P., Nepali, C. S., Niccolai, S., Niculescu, G., Niculescu, I., Niroula, M. R., Niyazov, R. A., Osipenko, M., Ostrovidov, A. I., Paris, M., Park, K., Park, S., Pasyuk, E., Pereira, S. Anefalos, Perrin, Y., Pisano, S., Pogorelko, O., Pozdniakov, S., Price, J. W., Procureur, S., Protopopescu, D., Ricco, G., Ripani, M., Ritchie, B. G., Rosner, G., Rossi, P., Sabatié, F., Saini, M. S., Salamanca, J., Salgado, C., Schott, D., Schumacher, R. A., Seraydaryan, H., Sharabian, Y. G., Smith, E. S., Sober, D. I., Sokhan, D., Stepanyan, S. S., Stoler, P., Strakovsky, I. I., Strauch, S., Taiuti, M., Tedeschi, D. J., Tkachenko, S., Ungaro, M., Vineyard, M. F., Voutier, E., Watts, D. P., Weygand, D. P., Wood, M. H., Zhang, J., and Zhao, B. Partial wave analysis of the reaction γp→pω and the search for nucleon resonances. United States: N. p., 2009. Web. doi:10.1103/PhysRevC.80.065209.
Williams, M., Applegate, D., Bellis, M., Meyer, C. A., Adhikari, K. P., Anghinolfi, M., Baghdasaryan, H., Ball, J., Battaglieri, M., Bedlinskiy, I., Berman, B. L., Biselli, A. S., Briscoe, W. J., Brooks, W. K., Burkert, V. D., Careccia, S. L., Carman, D. S., Cole, P. L., Collins, P., Crede, V., D’Angelo, A., Daniel, A., De Vita, R., De Sanctis, E., Deur, A., Dey, B., Dhamija, S., Dickson, R., Djalali, C., Dodge, G. E., Doughty, D., Dugger, M., Dupre, R., Alaoui, A. El, Elouadrhiri, L., Eugenio, P., Fedotov, G., Fegan, S., Fradi, A., Gabrielyan, M. Y., Garçon, M., Gilfoyle, G. P., Giovanetti, K. L., Girod, F. X., Gohn, W., Golovatch, E., Gothe, R. W., Griffioen, K. A., Guidal, M., Guler, N., Guo, L., Hafidi, K., Hakobyan, H., Hanretty, C., Hassall, N., Hicks, K., Holtrop, M., Ilieva, Y., Ireland, D. G., Ishkhanov, B. S., Isupov, E. L., Jawalkar, S. S., Jo, H. S., Johnstone, J. R., Joo, K., Keller, D., Khandaker, M., Khetarpal, P., Kim, W., Klein, A., Klein, F. J., Krahn, Z., Kubarovsky, V., Kuleshov, S. V., Kuznetsov, V., Livingston, K., Lu, H. Y., Mayer, M., McAndrew, J., McCracken, M. E., McKinnon, B., Mirazita, M., Mokeev, V., Moreno, B., Moriya, K., Morrison, B., Munevar, E., Nadel-Turonski, P., Nepali, C. S., Niccolai, S., Niculescu, G., Niculescu, I., Niroula, M. R., Niyazov, R. A., Osipenko, M., Ostrovidov, A. I., Paris, M., Park, K., Park, S., Pasyuk, E., Pereira, S. Anefalos, Perrin, Y., Pisano, S., Pogorelko, O., Pozdniakov, S., Price, J. W., Procureur, S., Protopopescu, D., Ricco, G., Ripani, M., Ritchie, B. G., Rosner, G., Rossi, P., Sabatié, F., Saini, M. S., Salamanca, J., Salgado, C., Schott, D., Schumacher, R. A., Seraydaryan, H., Sharabian, Y. G., Smith, E. S., Sober, D. I., Sokhan, D., Stepanyan, S. S., Stoler, P., Strakovsky, I. I., Strauch, S., Taiuti, M., Tedeschi, D. J., Tkachenko, S., Ungaro, M., Vineyard, M. F., Voutier, E., Watts, D. P., Weygand, D. P., Wood, M. H., Zhang, J., & Zhao, B. Partial wave analysis of the reaction γp→pω and the search for nucleon resonances. United States. doi:10.1103/PhysRevC.80.065209.
Williams, M., Applegate, D., Bellis, M., Meyer, C. A., Adhikari, K. P., Anghinolfi, M., Baghdasaryan, H., Ball, J., Battaglieri, M., Bedlinskiy, I., Berman, B. L., Biselli, A. S., Briscoe, W. J., Brooks, W. K., Burkert, V. D., Careccia, S. L., Carman, D. S., Cole, P. L., Collins, P., Crede, V., D’Angelo, A., Daniel, A., De Vita, R., De Sanctis, E., Deur, A., Dey, B., Dhamija, S., Dickson, R., Djalali, C., Dodge, G. E., Doughty, D., Dugger, M., Dupre, R., Alaoui, A. El, Elouadrhiri, L., Eugenio, P., Fedotov, G., Fegan, S., Fradi, A., Gabrielyan, M. Y., Garçon, M., Gilfoyle, G. P., Giovanetti, K. L., Girod, F. X., Gohn, W., Golovatch, E., Gothe, R. W., Griffioen, K. A., Guidal, M., Guler, N., Guo, L., Hafidi, K., Hakobyan, H., Hanretty, C., Hassall, N., Hicks, K., Holtrop, M., Ilieva, Y., Ireland, D. G., Ishkhanov, B. S., Isupov, E. L., Jawalkar, S. S., Jo, H. S., Johnstone, J. R., Joo, K., Keller, D., Khandaker, M., Khetarpal, P., Kim, W., Klein, A., Klein, F. J., Krahn, Z., Kubarovsky, V., Kuleshov, S. V., Kuznetsov, V., Livingston, K., Lu, H. Y., Mayer, M., McAndrew, J., McCracken, M. E., McKinnon, B., Mirazita, M., Mokeev, V., Moreno, B., Moriya, K., Morrison, B., Munevar, E., Nadel-Turonski, P., Nepali, C. S., Niccolai, S., Niculescu, G., Niculescu, I., Niroula, M. R., Niyazov, R. A., Osipenko, M., Ostrovidov, A. I., Paris, M., Park, K., Park, S., Pasyuk, E., Pereira, S. Anefalos, Perrin, Y., Pisano, S., Pogorelko, O., Pozdniakov, S., Price, J. W., Procureur, S., Protopopescu, D., Ricco, G., Ripani, M., Ritchie, B. G., Rosner, G., Rossi, P., Sabatié, F., Saini, M. S., Salamanca, J., Salgado, C., Schott, D., Schumacher, R. A., Seraydaryan, H., Sharabian, Y. G., Smith, E. S., Sober, D. I., Sokhan, D., Stepanyan, S. S., Stoler, P., Strakovsky, I. I., Strauch, S., Taiuti, M., Tedeschi, D. J., Tkachenko, S., Ungaro, M., Vineyard, M. F., Voutier, E., Watts, D. P., Weygand, D. P., Wood, M. H., Zhang, J., and Zhao, B. Wed . "Partial wave analysis of the reaction γp→pω and the search for nucleon resonances". United States. doi:10.1103/PhysRevC.80.065209. https://www.osti.gov/servlets/purl/980895.
@article{osti_980895,
title = {Partial wave analysis of the reaction γp→pω and the search for nucleon resonances},
author = {Williams, M. and Applegate, D. and Bellis, M. and Meyer, C. A. and Adhikari, K. P. and Anghinolfi, M. and Baghdasaryan, H. and Ball, J. and Battaglieri, M. and Bedlinskiy, I. and Berman, B. L. and Biselli, A. S. and Briscoe, W. J. and Brooks, W. K. and Burkert, V. D. and Careccia, S. L. and Carman, D. S. and Cole, P. L. and Collins, P. and Crede, V. and D’Angelo, A. and Daniel, A. and De Vita, R. and De Sanctis, E. and Deur, A. and Dey, B. and Dhamija, S. and Dickson, R. and Djalali, C. and Dodge, G. E. and Doughty, D. and Dugger, M. and Dupre, R. and Alaoui, A. El and Elouadrhiri, L. and Eugenio, P. and Fedotov, G. and Fegan, S. and Fradi, A. and Gabrielyan, M. Y. and Garçon, M. and Gilfoyle, G. P. and Giovanetti, K. L. and Girod, F. X. and Gohn, W. and Golovatch, E. and Gothe, R. W. and Griffioen, K. A. and Guidal, M. and Guler, N. and Guo, L. and Hafidi, K. and Hakobyan, H. and Hanretty, C. and Hassall, N. and Hicks, K. and Holtrop, M. and Ilieva, Y. and Ireland, D. G. and Ishkhanov, B. S. and Isupov, E. L. and Jawalkar, S. S. and Jo, H. S. and Johnstone, J. R. and Joo, K. and Keller, D. and Khandaker, M. and Khetarpal, P. and Kim, W. and Klein, A. and Klein, F. J. and Krahn, Z. and Kubarovsky, V. and Kuleshov, S. V. and Kuznetsov, V. and Livingston, K. and Lu, H. Y. and Mayer, M. and McAndrew, J. and McCracken, M. E. and McKinnon, B. and Mirazita, M. and Mokeev, V. and Moreno, B. and Moriya, K. and Morrison, B. and Munevar, E. and Nadel-Turonski, P. and Nepali, C. S. and Niccolai, S. and Niculescu, G. and Niculescu, I. and Niroula, M. R. and Niyazov, R. A. and Osipenko, M. and Ostrovidov, A. I. and Paris, M. and Park, K. and Park, S. and Pasyuk, E. and Pereira, S. Anefalos and Perrin, Y. and Pisano, S. and Pogorelko, O. and Pozdniakov, S. and Price, J. W. and Procureur, S. and Protopopescu, D. and Ricco, G. and Ripani, M. and Ritchie, B. G. and Rosner, G. and Rossi, P. and Sabatié, F. and Saini, M. S. and Salamanca, J. and Salgado, C. and Schott, D. and Schumacher, R. A. and Seraydaryan, H. and Sharabian, Y. G. and Smith, E. S. and Sober, D. I. and Sokhan, D. and Stepanyan, S. S. and Stoler, P. and Strakovsky, I. I. and Strauch, S. and Taiuti, M. and Tedeschi, D. J. and Tkachenko, S. and Ungaro, M. and Vineyard, M. F. and Voutier, E. and Watts, D. P. and Weygand, D. P. and Wood, M. H. and Zhang, J. and Zhao, B.},
abstractNote = {We performed an event-based partial wave analysis (PWA) of the reaction γ p -> p ω on a high-statistics dataset obtained using the CLAS at Jefferson Lab for center-of-mass energies from threshold up to 2.4 GeV. This analysis benefits from access to the world's first high precision spin density matrix element measurements, available to the event-based PWA through the decay distribution of omega-> π+ π - π0. The data confirm the dominance of the t-channel π0 exchange amplitude in the forward direction. The dominant resonance contributions are consistent with the previously identified states F[15](1680) and D[13](1700) near threshold, as well as the G[17](2190) at higher energies. Suggestive evidence for the presence of a J(P)=5/2+ state around 2 GeV, a "missing" state, has also been found. Evidence for other states is inconclusive.},
doi = {10.1103/PhysRevC.80.065209},
journal = {Physical Review. C, Nuclear Physics},
number = 6,
volume = 80,
place = {United States},
year = {2009},
month = {12}
}

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