Abstract
Photon beam asymmetry Sigma measurements for omega photoproduction in the reaction gamma (gamma) over right arrow p -> omega p are reported for photon energies from 1.152 to 1.876 GeV. Data were taken using a linearly-polarized tagged photon beam, a cryogenic hydrogen target, and the CLAS spectrometer in Hall B at Jefferson Lab. The measurements obtained markedly increase the size of the database for this observable, extend coverage to higher energies, and resolve discrepancies in previously published data. Comparisons of these new results with predictions from a chiral-quark-based model and from a dynamical coupled-channels model indicate the importance of interferences between t-channel meson exchange and s- and u-channel contributions, underscoring sensitivity to the nucleon resonances included in those descriptions. Comparisons with the Bonn-Gatchina partial-wave analysis indicate the Sigma data reported here help to fix the magnitudes of the interference terms between the leading amplitudes in that calculation (Pomeron exchange and the resonant portion of the J(P)= 3/2(+) partial wave), as well as the resonant portions of the smaller partial waves with J(P)= 1/2(-), 3/2(-), and 5/2(+). (C) 2017 The Author(s). Published by Elsevier B.V.
| Original language | English |
|---|---|
| Pages (from-to) | 112-120 |
| Number of pages | 9 |
| Journal | Physics Letters B |
| Volume | 773 |
| DOIs | |
| Publication status | Published - 10 Oct 2017 |
Keywords
- Omega photoproduction
- Polarization observable
- Beam asymmetry
- MESON PHOTOPRODUCTION
- NEAR-THRESHOLD
- RESONANCE REGION
- LOOP CORRECTIONS
- VECTOR-MESONS
- QUARK-MODEL
- CHANNEL
- CLAS
- PROTON
- DECAY
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Photon beam asymmetry Sigma in the reaction -> p omega for E-gamma=1.152 to 1.876 GeV. / Collins, P.; Ritchie, B. G.; Dugger, M.; Klein, F. J.; Anisovich, A. V.; Klempt, E.; Nikonov, V. A.; Sarantsev, A.; Adhikari, K. P.; Adhikari, S.; Adikaram, D.; Akbar, Z.; Pereira, S. Anefalos; Avakian, H.; Ball, J.; Baltzell, N. A.; Bashkanov, M.; Battaglieri, M.; Batourine, V.; Bedlinskiy, I.; Biselli, A. S.; Boiarinov, S.; Briscoe, W. J.; Brooks, W. K.; Burkert, V. D.; Cao, Frank Thanh; Cao, T.; Carman, D. S.; Celentano, A.; Charles, G.; Chetry, T.; Ciullo, G.; Clark, L.; Cole, P. L.; Contalbrigo, M.; Cortes, O.; Crede, V.; Dashyan, N.; De Vita, R.; De Sanctis, E.; Defurne, M.; Deur, A.; Djalali, C.; Dupre, R.; Egiyan, H.; El Alaoui, A.; El Fassi, L.; Eugenio, P.; Fedotov, G.; Filippi, A.; Fleming, J. A.; Ghandilyan, Y.; Gilfoyle, G. P.; Giovanetti, K. L.; Girod, F. X.; Glazier, D. I.; Gleason, C.; Golovatch, E.; Gothe, R. W.; Griffioen, K. A.; Guidal, M.; Hafidi, K.; Hakobyan, H.; Hanretty, C.; Harrison, N.; Hattawy, M.; Heddle, D.; Hicks, K.; Hollis, G.; Holtrop, M.; Hughes, S. M.; Ilieva, Y.; Ireland, D. G.; Ishkhanov, B. S.; Isupov, E. L.; Jenkins, D.; Jiang, H.; Jo, H. S.; Joosten, S.; Keller, D.; Khachatryan, G.; Khachatryan, M.; Khandaker, M.; Kim, A.; Kim, W.; Klein, A.; Kubarovsky, V.; Kuleshov, S. V.; Lanza, L.; Lenisa, P.; Livingston, K.; MacGregor, I. J. D.; Markov, N.; McKinnon, B.; Meyer, C. A.; Meziani, Z. E.; Mineeva, T.; Mokeev, V.; Montgomery, R. A.; Movsisyan, A.; Munevar, E.; Camacho, C. Munoz; Nadel-Turonski, P.; Net, L. A.; Niccolai, S.; Niculescu, G.; Niculescu, I.; Osipenko, M.; Ostrovidov, A. I.; Paolone, M.; Paremuzyan, R.; Park, K.; Pasyuk, E.; Phelps, W.; Pisano, S.; Pogorelko, O.; Price, J. W.; Procureur, S.; Prok, Y.; Protopopescu, D.; Raue, B. A.; Ripani, M.; Rizzo, A.; Rosner, G.; Sabatie, F.; Salgado, C.; Schumacher, R. A.; Sharabian, Y. G.; Simonyan, A.; Skorodumina, Iu.; Smith, G. D.; Sober, D. I.; Sokhan, D.; Sparveris, N.; Stankovic, I.; Stepanyan, S.; Strakovsky, I. I.; Strauch, S.; Taiuti, M.; Ungaro, M.; Voskanyan, H.; Voutier, E.; Walford, N. K.; Watts, D. P.; Wei, X.; Wood, M. H.; Zachariou, N.; Zhang, J.; Zhao, Z. W.
In: Physics Letters B, Vol. 773, 10.10.2017, p. 112-120.Research output: Contribution to journal › Article › peer-review
TY - JOUR
T1 - Photon beam asymmetry Sigma in the reaction -> p omega for E-gamma=1.152 to 1.876 GeV
AU - Collins, P.
AU - Ritchie, B. G.
AU - Dugger, M.
AU - Klein, F. J.
AU - Anisovich, A. V.
AU - Klempt, E.
AU - Nikonov, V. A.
AU - Sarantsev, A.
AU - Adhikari, K. P.
AU - Adhikari, S.
AU - Adikaram, D.
AU - Akbar, Z.
AU - Pereira, S. Anefalos
AU - Avakian, H.
AU - Ball, J.
AU - Baltzell, N. A.
AU - Bashkanov, M.
AU - Battaglieri, M.
AU - Batourine, V.
AU - Bedlinskiy, I.
AU - Biselli, A. S.
AU - Boiarinov, S.
AU - Briscoe, W. J.
AU - Brooks, W. K.
AU - Burkert, V. D.
AU - Cao, Frank Thanh
AU - Cao, T.
AU - Carman, D. S.
AU - Celentano, A.
AU - Charles, G.
AU - Chetry, T.
AU - Ciullo, G.
AU - Clark, L.
AU - Cole, P. L.
AU - Contalbrigo, M.
AU - Cortes, O.
AU - Crede, V.
AU - Dashyan, N.
AU - De Vita, R.
AU - De Sanctis, E.
AU - Defurne, M.
AU - Deur, A.
AU - Djalali, C.
AU - Dupre, R.
AU - Egiyan, H.
AU - El Alaoui, A.
AU - El Fassi, L.
AU - Eugenio, P.
AU - Fedotov, G.
AU - Filippi, A.
AU - Fleming, J. A.
AU - Ghandilyan, Y.
AU - Gilfoyle, G. P.
AU - Giovanetti, K. L.
AU - Girod, F. X.
AU - Glazier, D. I.
AU - Gleason, C.
AU - Golovatch, E.
AU - Gothe, R. W.
AU - Griffioen, K. A.
AU - Guidal, M.
AU - Hafidi, K.
AU - Hakobyan, H.
AU - Hanretty, C.
AU - Harrison, N.
AU - Hattawy, M.
AU - Heddle, D.
AU - Hicks, K.
AU - Hollis, G.
AU - Holtrop, M.
AU - Hughes, S. M.
AU - Ilieva, Y.
AU - Ireland, D. G.
AU - Ishkhanov, B. S.
AU - Isupov, E. L.
AU - Jenkins, D.
AU - Jiang, H.
AU - Jo, H. S.
AU - Joosten, S.
AU - Keller, D.
AU - Khachatryan, G.
AU - Khachatryan, M.
AU - Khandaker, M.
AU - Kim, A.
AU - Kim, W.
AU - Klein, A.
AU - Kubarovsky, V.
AU - Kuleshov, S. V.
AU - Lanza, L.
AU - Lenisa, P.
AU - Livingston, K.
AU - MacGregor, I. J. D.
AU - Markov, N.
AU - McKinnon, B.
AU - Meyer, C. A.
AU - Meziani, Z. E.
AU - Mineeva, T.
AU - Mokeev, V.
AU - Montgomery, R. A.
AU - Movsisyan, A.
AU - Munevar, E.
AU - Camacho, C. Munoz
AU - Nadel-Turonski, P.
AU - Net, L. A.
AU - Niccolai, S.
AU - Niculescu, G.
AU - Niculescu, I.
AU - Osipenko, M.
AU - Ostrovidov, A. I.
AU - Paolone, M.
AU - Paremuzyan, R.
AU - Park, K.
AU - Pasyuk, E.
AU - Phelps, W.
AU - Pisano, S.
AU - Pogorelko, O.
AU - Price, J. W.
AU - Procureur, S.
AU - Prok, Y.
AU - Protopopescu, D.
AU - Raue, B. A.
AU - Ripani, M.
AU - Rizzo, A.
AU - Rosner, G.
AU - Sabatie, F.
AU - Salgado, C.
AU - Schumacher, R. A.
AU - Sharabian, Y. G.
AU - Simonyan, A.
AU - Skorodumina, Iu.
AU - Smith, G. D.
AU - Sober, D. I.
AU - Sokhan, D.
AU - Sparveris, N.
AU - Stankovic, I.
AU - Stepanyan, S.
AU - Strakovsky, I. I.
AU - Strauch, S.
AU - Taiuti, M.
AU - Ungaro, M.
AU - Voskanyan, H.
AU - Voutier, E.
AU - Walford, N. K.
AU - Watts, D. P.
AU - Wei, X.
AU - Wood, M. H.
AU - Zachariou, N.
AU - Zhang, J.
AU - Zhao, Z. W.
PY - 2017/10/10
Y1 - 2017/10/10
N2 - Photon beam asymmetry Sigma measurements for omega photoproduction in the reaction gamma (gamma) over right arrow p -> omega p are reported for photon energies from 1.152 to 1.876 GeV. Data were taken using a linearly-polarized tagged photon beam, a cryogenic hydrogen target, and the CLAS spectrometer in Hall B at Jefferson Lab. The measurements obtained markedly increase the size of the database for this observable, extend coverage to higher energies, and resolve discrepancies in previously published data. Comparisons of these new results with predictions from a chiral-quark-based model and from a dynamical coupled-channels model indicate the importance of interferences between t-channel meson exchange and s- and u-channel contributions, underscoring sensitivity to the nucleon resonances included in those descriptions. Comparisons with the Bonn-Gatchina partial-wave analysis indicate the Sigma data reported here help to fix the magnitudes of the interference terms between the leading amplitudes in that calculation (Pomeron exchange and the resonant portion of the J(P)= 3/2(+) partial wave), as well as the resonant portions of the smaller partial waves with J(P)= 1/2(-), 3/2(-), and 5/2(+). (C) 2017 The Author(s). Published by Elsevier B.V.
AB - Photon beam asymmetry Sigma measurements for omega photoproduction in the reaction gamma (gamma) over right arrow p -> omega p are reported for photon energies from 1.152 to 1.876 GeV. Data were taken using a linearly-polarized tagged photon beam, a cryogenic hydrogen target, and the CLAS spectrometer in Hall B at Jefferson Lab. The measurements obtained markedly increase the size of the database for this observable, extend coverage to higher energies, and resolve discrepancies in previously published data. Comparisons of these new results with predictions from a chiral-quark-based model and from a dynamical coupled-channels model indicate the importance of interferences between t-channel meson exchange and s- and u-channel contributions, underscoring sensitivity to the nucleon resonances included in those descriptions. Comparisons with the Bonn-Gatchina partial-wave analysis indicate the Sigma data reported here help to fix the magnitudes of the interference terms between the leading amplitudes in that calculation (Pomeron exchange and the resonant portion of the J(P)= 3/2(+) partial wave), as well as the resonant portions of the smaller partial waves with J(P)= 1/2(-), 3/2(-), and 5/2(+). (C) 2017 The Author(s). Published by Elsevier B.V.
KW - Omega photoproduction
KW - Polarization observable
KW - Beam asymmetry
KW - MESON PHOTOPRODUCTION
KW - NEAR-THRESHOLD
KW - RESONANCE REGION
KW - LOOP CORRECTIONS
KW - VECTOR-MESONS
KW - QUARK-MODEL
KW - CHANNEL
KW - CLAS
KW - PROTON
KW - DECAY
U2 - 10.1016/j.physletb.2017.08.015
DO - 10.1016/j.physletb.2017.08.015
M3 - Article
VL - 773
SP - 112
EP - 120
JO - Physics Letters B
JF - Physics Letters B
SN - 0370-2693
ER -