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Title: First measurement of direct photoproduction of the a 2(1320) 0 meson on the proton

Abstract

We present the first measurement of the reaction γ p → a 2 ( 1320 ) 0 p in the photon energy range 3.5– 5.5 Ge V and four-momentum transfer squared 0.2 < - t < 2.0 Ge V 2 . Data were collected with the CEBAF Large Acceptance Spectrometer detector at the Thomas Jefferson National Accelerator Facility. The a 2 resonance was detected by measuring the reaction γ p → π 0 η p and reconstructing the π 0 η invariant mass. The most prominent feature of the differential cross section is a dip at -t ≈ 0.55 Ge V 2 . This can be described in the framework of Regge phenomenology, where the exchange degeneracy hypothesis predicts a zero in the reaction amplitude for this value of the four-momentum transfer.

Authors:
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Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Indiana Univ., Bloomington, IN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP)
Contributing Org.:
The CLAS Collaboration; CLAS Collaboration, INFN, Indiana University, Jefferson Lab
OSTI Identifier:
1670104
Alternate Identifier(s):
OSTI ID: 1669359
Report Number(s):
JLAB-PHY-20-3182; DOE/OR/23177-4959; arXiv:2004.05359
Journal ID: ISSN 2469-9985
Grant/Contract Number:  
AC05-06OR23177; FG02-87ER40365
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 102; Journal Issue: 3; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Lepton induced nuclear reactions; Photon & charged-lepton interactions with hadrons; Photonuclear reactions; Hadrons; Light mesons; Spectroscopy; hadrons, light mesons, leptons, spectroscopy

Citation Formats

Celentano, A., Battaglieri, M., De Vita, R., Marsicano, L., Mathieu, V., Pilloni, A., Szczepaniak, A., Adhikari, K. P., Adhikari, S., Amaryan, M. J., Angelini, G., Atac, H., Barion, L., Bedlinskiy, I., Benmokhtar, Fatiha, Bianconi, A., Biselli, A. S., Bossù, F., Boiarinov, S., Briscoe, W. J., Brooks, W. K., Bulumulla, D., Burkert, V. D., Carman, D. S., Carvajal, J. C., Chatagnon, P., Chetry, T., Ciullo, G., Clark, L., Cole, P. L., Contalbrigo, M., Cortes, O., Crede, V., Cruz-Torres, R., D'Angelo, A., Dashyan, N., Defurne, M., Deur, A., Diehl, S., Djalali, C., Dugger, M., Dupre, R., Egiyan, H., Ehrhart, M., El Alaoui, A., El Fassi, L., Elouadrhiri, L., Eugenio, P., Fedotov, G., Fersch, R., Filippi, A., Gavalian, G., Gevorgyan, N., Girod, F. X., Glazier, D. I., Gohn, W., Golovatch, E., Gothe, R. W., Griffioen, K. A., Guidal, M., Hafidi, K., Hakobyan, H., Harrison, N., Hattawy, M., Hauenstein, F., Hayward, T. B., Heddle, D., Hicks, K., Hobart, A., Holtrop, M., Ilieva, Y., Ireland, D. G., Ishkhanov, B. S., Isupov, E. L., Jenkins, D., Jo, H. S., Joo, K., Joosten, S., Keller, D., Khachatryan, M., Khanal, A., Khandaker, M., Kim, A., Kim, C. W., Kim, W., Klein, F. J., Kubarovsky, V., Lanza, L., Leali, M., Lenisa, P., Livingston, K., Lucherini, V., MacGregor, I. D., Marchand, D., Markov, N., Mascagna, V., McCracken, M. E., McKinnon, B., Meziani, Z. -E., Mirazita, M., Mokeev, V., Movsisyan, A., Munevar, E., Munoz Camacho, C., Nadel-Turonski, P., Neupane, K., Niccolai, S., Niculescu, G., Osipenko, M., Ostrovidov, A. I., Paolone, M., Pappalardo, L. L., Paremuzyan, R., Pasyuk, E., Phelps, W., Pogorelko, O., Price, J. W., Prok, Y., Ripani, M., Ritman, J., Rizzo, A., Rosner, G., Rowley, J., Sabatié, F., Salgado, C., Schmidt, A., Schumacher, R. A., Shrestha, U., Sokan, D., Soto, O., Sparveris, N., Stepanyan, S., Strakovsky, I. I., Strauch, S., Tan, J. A., Tyler, N., Ungaro, M., Venturelli, L., Voskanyan, H., Voutier, E., Watts, D., Wei, X., Wood, M. H., Zachariou, N., Zhang, J., and Zhao, Z. W. First measurement of direct photoproduction of the a2(1320)0 meson on the proton. United States: N. p., 2020. Web. doi:10.1103/physrevc.102.032201.
Celentano, A., Battaglieri, M., De Vita, R., Marsicano, L., Mathieu, V., Pilloni, A., Szczepaniak, A., Adhikari, K. P., Adhikari, S., Amaryan, M. J., Angelini, G., Atac, H., Barion, L., Bedlinskiy, I., Benmokhtar, Fatiha, Bianconi, A., Biselli, A. S., Bossù, F., Boiarinov, S., Briscoe, W. J., Brooks, W. K., Bulumulla, D., Burkert, V. D., Carman, D. S., Carvajal, J. C., Chatagnon, P., Chetry, T., Ciullo, G., Clark, L., Cole, P. L., Contalbrigo, M., Cortes, O., Crede, V., Cruz-Torres, R., D'Angelo, A., Dashyan, N., Defurne, M., Deur, A., Diehl, S., Djalali, C., Dugger, M., Dupre, R., Egiyan, H., Ehrhart, M., El Alaoui, A., El Fassi, L., Elouadrhiri, L., Eugenio, P., Fedotov, G., Fersch, R., Filippi, A., Gavalian, G., Gevorgyan, N., Girod, F. X., Glazier, D. I., Gohn, W., Golovatch, E., Gothe, R. W., Griffioen, K. A., Guidal, M., Hafidi, K., Hakobyan, H., Harrison, N., Hattawy, M., Hauenstein, F., Hayward, T. B., Heddle, D., Hicks, K., Hobart, A., Holtrop, M., Ilieva, Y., Ireland, D. G., Ishkhanov, B. S., Isupov, E. L., Jenkins, D., Jo, H. S., Joo, K., Joosten, S., Keller, D., Khachatryan, M., Khanal, A., Khandaker, M., Kim, A., Kim, C. W., Kim, W., Klein, F. J., Kubarovsky, V., Lanza, L., Leali, M., Lenisa, P., Livingston, K., Lucherini, V., MacGregor, I. D., Marchand, D., Markov, N., Mascagna, V., McCracken, M. E., McKinnon, B., Meziani, Z. -E., Mirazita, M., Mokeev, V., Movsisyan, A., Munevar, E., Munoz Camacho, C., Nadel-Turonski, P., Neupane, K., Niccolai, S., Niculescu, G., Osipenko, M., Ostrovidov, A. I., Paolone, M., Pappalardo, L. L., Paremuzyan, R., Pasyuk, E., Phelps, W., Pogorelko, O., Price, J. W., Prok, Y., Ripani, M., Ritman, J., Rizzo, A., Rosner, G., Rowley, J., Sabatié, F., Salgado, C., Schmidt, A., Schumacher, R. A., Shrestha, U., Sokan, D., Soto, O., Sparveris, N., Stepanyan, S., Strakovsky, I. I., Strauch, S., Tan, J. A., Tyler, N., Ungaro, M., Venturelli, L., Voskanyan, H., Voutier, E., Watts, D., Wei, X., Wood, M. H., Zachariou, N., Zhang, J., & Zhao, Z. W. First measurement of direct photoproduction of the a2(1320)0 meson on the proton. United States. doi:10.1103/physrevc.102.032201.
Celentano, A., Battaglieri, M., De Vita, R., Marsicano, L., Mathieu, V., Pilloni, A., Szczepaniak, A., Adhikari, K. P., Adhikari, S., Amaryan, M. J., Angelini, G., Atac, H., Barion, L., Bedlinskiy, I., Benmokhtar, Fatiha, Bianconi, A., Biselli, A. S., Bossù, F., Boiarinov, S., Briscoe, W. J., Brooks, W. K., Bulumulla, D., Burkert, V. D., Carman, D. S., Carvajal, J. C., Chatagnon, P., Chetry, T., Ciullo, G., Clark, L., Cole, P. L., Contalbrigo, M., Cortes, O., Crede, V., Cruz-Torres, R., D'Angelo, A., Dashyan, N., Defurne, M., Deur, A., Diehl, S., Djalali, C., Dugger, M., Dupre, R., Egiyan, H., Ehrhart, M., El Alaoui, A., El Fassi, L., Elouadrhiri, L., Eugenio, P., Fedotov, G., Fersch, R., Filippi, A., Gavalian, G., Gevorgyan, N., Girod, F. X., Glazier, D. I., Gohn, W., Golovatch, E., Gothe, R. W., Griffioen, K. A., Guidal, M., Hafidi, K., Hakobyan, H., Harrison, N., Hattawy, M., Hauenstein, F., Hayward, T. B., Heddle, D., Hicks, K., Hobart, A., Holtrop, M., Ilieva, Y., Ireland, D. G., Ishkhanov, B. S., Isupov, E. L., Jenkins, D., Jo, H. S., Joo, K., Joosten, S., Keller, D., Khachatryan, M., Khanal, A., Khandaker, M., Kim, A., Kim, C. W., Kim, W., Klein, F. J., Kubarovsky, V., Lanza, L., Leali, M., Lenisa, P., Livingston, K., Lucherini, V., MacGregor, I. D., Marchand, D., Markov, N., Mascagna, V., McCracken, M. E., McKinnon, B., Meziani, Z. -E., Mirazita, M., Mokeev, V., Movsisyan, A., Munevar, E., Munoz Camacho, C., Nadel-Turonski, P., Neupane, K., Niccolai, S., Niculescu, G., Osipenko, M., Ostrovidov, A. I., Paolone, M., Pappalardo, L. L., Paremuzyan, R., Pasyuk, E., Phelps, W., Pogorelko, O., Price, J. W., Prok, Y., Ripani, M., Ritman, J., Rizzo, A., Rosner, G., Rowley, J., Sabatié, F., Salgado, C., Schmidt, A., Schumacher, R. A., Shrestha, U., Sokan, D., Soto, O., Sparveris, N., Stepanyan, S., Strakovsky, I. I., Strauch, S., Tan, J. A., Tyler, N., Ungaro, M., Venturelli, L., Voskanyan, H., Voutier, E., Watts, D., Wei, X., Wood, M. H., Zachariou, N., Zhang, J., and Zhao, Z. W. Mon . "First measurement of direct photoproduction of the a2(1320)0 meson on the proton". United States. doi:10.1103/physrevc.102.032201.
@article{osti_1670104,
title = {First measurement of direct photoproduction of the a2(1320)0 meson on the proton},
author = {Celentano, A. and Battaglieri, M. and De Vita, R. and Marsicano, L. and Mathieu, V. and Pilloni, A. and Szczepaniak, A. and Adhikari, K. P. and Adhikari, S. and Amaryan, M. J. and Angelini, G. and Atac, H. and Barion, L. and Bedlinskiy, I. and Benmokhtar, Fatiha and Bianconi, A. and Biselli, A. S. and Bossù, F. and Boiarinov, S. and Briscoe, W. J. and Brooks, W. K. and Bulumulla, D. and Burkert, V. D. and Carman, D. S. and Carvajal, J. C. and Chatagnon, P. and Chetry, T. and Ciullo, G. and Clark, L. and Cole, P. L. and Contalbrigo, M. and Cortes, O. and Crede, V. and Cruz-Torres, R. and D'Angelo, A. and Dashyan, N. and Defurne, M. and Deur, A. and Diehl, S. and Djalali, C. and Dugger, M. and Dupre, R. and Egiyan, H. and Ehrhart, M. and El Alaoui, A. and El Fassi, L. and Elouadrhiri, L. and Eugenio, P. and Fedotov, G. and Fersch, R. and Filippi, A. and Gavalian, G. and Gevorgyan, N. and Girod, F. X. and Glazier, D. I. and Gohn, W. and Golovatch, E. and Gothe, R. W. and Griffioen, K. A. and Guidal, M. and Hafidi, K. and Hakobyan, H. and Harrison, N. and Hattawy, M. and Hauenstein, F. and Hayward, T. B. and Heddle, D. and Hicks, K. and Hobart, A. and Holtrop, M. and Ilieva, Y. and Ireland, D. G. and Ishkhanov, B. S. and Isupov, E. L. and Jenkins, D. and Jo, H. S. and Joo, K. and Joosten, S. and Keller, D. and Khachatryan, M. and Khanal, A. and Khandaker, M. and Kim, A. and Kim, C. W. and Kim, W. and Klein, F. J. and Kubarovsky, V. and Lanza, L. and Leali, M. and Lenisa, P. and Livingston, K. and Lucherini, V. and MacGregor, I. D. and Marchand, D. and Markov, N. and Mascagna, V. and McCracken, M. E. and McKinnon, B. and Meziani, Z. -E. and Mirazita, M. and Mokeev, V. and Movsisyan, A. and Munevar, E. and Munoz Camacho, C. and Nadel-Turonski, P. and Neupane, K. and Niccolai, S. and Niculescu, G. and Osipenko, M. and Ostrovidov, A. I. and Paolone, M. and Pappalardo, L. L. and Paremuzyan, R. and Pasyuk, E. and Phelps, W. and Pogorelko, O. and Price, J. W. and Prok, Y. and Ripani, M. and Ritman, J. and Rizzo, A. and Rosner, G. and Rowley, J. and Sabatié, F. and Salgado, C. and Schmidt, A. and Schumacher, R. A. and Shrestha, U. and Sokan, D. and Soto, O. and Sparveris, N. and Stepanyan, S. and Strakovsky, I. I. and Strauch, S. and Tan, J. A. and Tyler, N. and Ungaro, M. and Venturelli, L. and Voskanyan, H. and Voutier, E. and Watts, D. and Wei, X. and Wood, M. H. and Zachariou, N. and Zhang, J. and Zhao, Z. W.},
abstractNote = {We present the first measurement of the reaction γ p → a 2 ( 1320 ) 0 p in the photon energy range 3.5– 5.5 Ge V and four-momentum transfer squared 0.2 < - t < 2.0 Ge V 2 . Data were collected with the CEBAF Large Acceptance Spectrometer detector at the Thomas Jefferson National Accelerator Facility. The a 2 resonance was detected by measuring the reaction γ p → π 0 η p and reconstructing the π 0 η invariant mass. The most prominent feature of the differential cross section is a dip at -t ≈ 0.55 Ge V 2 . This can be described in the framework of Regge phenomenology, where the exchange degeneracy hypothesis predicts a zero in the reaction amplitude for this value of the four-momentum transfer.},
doi = {10.1103/physrevc.102.032201},
journal = {Physical Review C},
issn = {2469-9985},
number = 3,
volume = 102,
place = {United States},
year = {2020},
month = {9}
}

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