Beam-spin asymmetry Σ for Σ- hyperon photoproduction off the neutron

Zachariou, N.; Munevar, E.; Berman, B. L.; Bydzovsky, P.; Cieply, A.; Feldman, G.; Ilieva, Y.; Nadel-Turonski, P.; Skoupil, D.; Sarantsev, A., V; Watts, D. P.; Amaryan, M. J.; Angelini, G.; Armstrong, W. R.; Atac, H.; Avakian, H.; Barion, L.; Bashkanov, M.; Battaglieri, M.; Bedlinskiy, I; Benmokhtar, F.; Bianconi, A.; Biondo, L.; Biselli, A. S.; Bondi, M.; Bossu, F.; Boiarinov, S.; Briscoe, W. J.; Brooks, W. K.; Bulumulla, D.; Burkert, V. D.; Carman, D. S.; Carvajal, J. C.; Celentano, A.; Chatagnon, P.; Chetry, T.; Ciullo, G.; Clark, L.; Cole, P. L.; Contalbrigo, M.; Costantini, G.; Crede, V; D'Angelo, A.; Dashyan, N.; De Vita, R.; Defurne, M.; Deur, A.; Diehl, S.; Djalali, C.; Dupre, R.; Dugger, M.; Egiyan, H.; Ehrhart, M.; El Alaoui, A.; El Fassi, L.; Eugenio, P.; Fedotov, G.; Fegan, S.; Filippi, A.; Fradi, A.; Gavalian, G.; Gilfoyle, G. P.; Girod, F. X.; Gleason, C.; Golubenko, A. A.; Gothe, R. W.; Griffioen, K. A.; Guidal, M.; Hafidi, K.; Hakobyan, H.; Hattawy, M.; Hayward, T. B.; Heddle, D.; Hicks, K.; Hobart, A.; Holtrop, M.; Ireland, D. G.; Isupov, E. L.; Jenkins, D.; Jo, H. S.; Joo, K.; Keller, D.; Khanal, A.; Khandaker, M.; Kim, A.; Klein, F. J.; Kripko, A.; Kubarovsky, V; Lanza, L.; Leali, M.; Livingston, K.; MacGregor, I. J. D.; Marchand, D.; Markov, N.; Marsicano, L.; Mascagna, V; McKinnon, B.; Migliorati, S.; Mineeva, T.; Mirazita, M.; Mokeev, V; Camacho, C. Munoz; Neupane, K.; Niccolai, S.; Niculescu, G.; O'Connell, T. R.; Osipenko, M.; Ostrovidov, A., I; Pandey, P.; Paolone, M.; Pappalardo, L. L.; Paremuzyan, R.; Pasyuk, E.; Phelps, W.; Pogorelko, O.; Price, J. W.; Prok, Y.; Raue, B. A.; Ripani, M.; Ritman, J.; Rizzo, A.; Rosner, G.; Rowley, J.; Sabatie, F.; Salgado, C.; Schmidt, A.; Schumacher, R. A.; Sharabian, Y. G.; Shirokov, E., V; Shrestha, U.; Sokhan, D.; Soto, O.; Sparveris, N.; Stepanyan, S.; Stoler, P.; Strakovsky, I. I.; Strauch, S.; Tyson, R.; Ungaro, M.; Venturelli, L.; Voskanyan, H.; Vossen, A.; Voutier, E.; Wei, K.; Wei, X.; Wishart, R.; Wood, M. H.; Yale, B.; Zhang, J.; Zhao, Z. W.

doi:10.1016/j.physletb.2022.136985

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Beam-spin asymmetry Σ for Σ- hyperon photoproduction off the neutron

Zachariou, N.;
Munevar, E.;
Berman, B. L.;
Bydzovsky, P.;
Cieply, A.;
... Jo, H. S.;
외 144명

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초록

We report a new measurement of the beam-spin asymmetry, Sigma, for the (gamma) over right arrown -> K+Sigma(-) reaction using quasi-free neutrons in a liquid-deuterium target. The new dataset includes data at previously unmeasured photon energy and angular ranges, thereby providing new constraints on partial wave analyses used to extract properties of the excited nucleon states. The experimental data were obtained using the CEBAF Large Acceptance Spectrometer (CLAS), housed in Hall B of the Thomas Jefferson National Accelerator Facility (JLab). The CLAS detector measured reaction products from a liquid-deuterium target produced by an energy-tagged, linearly polarised photon beam with energies in the range 1.1 to 2.3 GeV. Predictions from an isobar model indicate strong sensitivity to N(1720)3/2(+), Delta(1900)1/2(-), and N(1895)1/2(-), which corroborates results from a recent combined analysis of all K Sigma channels. When our data are incorporated in the fits of partial-wave analyses, one observes significant changes in gamma-n couplings of resonances which have small branching ratios to the pi N channel. (c) 2022 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP(3).

키워드

QUARK-MODEL; OBSERVABLES; BARYONS

제목: Beam-spin asymmetry Σ for Σ- hyperon photoproduction off the neutron

저자: Zachariou, N.; Munevar, E.; Berman, B. L.; Bydzovsky, P.; Cieply, A.; Feldman, G.; Ilieva, Y.; Nadel-Turonski, P.; Skoupil, D.; Sarantsev, A., V; Watts, D. P.; Amaryan, M. J.; Angelini, G.; Armstrong, W. R.; Atac, H.; Avakian, H.; Barion, L.; Bashkanov, M.; Battaglieri, M.; Bedlinskiy, I; Benmokhtar, F.; Bianconi, A.; Biondo, L.; Biselli, A. S.; Bondi, M.; Bossu, F.; Boiarinov, S.; Briscoe, W. J.; Brooks, W. K.; Bulumulla, D.; Burkert, V. D.; Carman, D. S.; Carvajal, J. C.; Celentano, A.; Chatagnon, P.; Chetry, T.; Ciullo, G.; Clark, L.; Cole, P. L.; Contalbrigo, M.; Costantini, G.; Crede, V; D'Angelo, A.; Dashyan, N.; De Vita, R.; Defurne, M.; Deur, A.; Diehl, S.; Djalali, C.; Dupre, R.; Dugger, M.; Egiyan, H.; Ehrhart, M.; El Alaoui, A.; El Fassi, L.; Eugenio, P.; Fedotov, G.; Fegan, S.; Filippi, A.; Fradi, A.; Gavalian, G.; Gilfoyle, G. P.; Girod, F. X.; Gleason, C.; Golubenko, A. A.; Gothe, R. W.; Griffioen, K. A.; Guidal, M.; Hafidi, K.; Hakobyan, H.; Hattawy, M.; Hayward, T. B.; Heddle, D.; Hicks, K.; Hobart, A.; Holtrop, M.; Ireland, D. G.; Isupov, E. L.; Jenkins, D.; Jo, H. S.; Joo, K.; Keller, D.; Khanal, A.; Khandaker, M.; Kim, A.; Klein, F. J.; Kripko, A.; Kubarovsky, V; Lanza, L.; Leali, M.; Livingston, K.; MacGregor, I. J. D.; Marchand, D.; Markov, N.; Marsicano, L.; Mascagna, V; McKinnon, B.; Migliorati, S.; Mineeva, T.; Mirazita, M.; Mokeev, V; Camacho, C. Munoz; Neupane, K.; Niccolai, S.; Niculescu, G.; O'Connell, T. R.; Osipenko, M.; Ostrovidov, A., I; Pandey, P.; Paolone, M.; Pappalardo, L. L.; Paremuzyan, R.; Pasyuk, E.; Phelps, W.; Pogorelko, O.; Price, J. W.; Prok, Y.; Raue, B. A.; Ripani, M.; Ritman, J.; Rizzo, A.; Rosner, G.; Rowley, J.; Sabatie, F.; Salgado, C.; Schmidt, A.; Schumacher, R. A.; Sharabian, Y. G.; Shirokov, E., V; Shrestha, U.; Sokhan, D.; Soto, O.; Sparveris, N.; Stepanyan, S.; Stoler, P.; Strakovsky, I. I.; Strauch, S.; Tyson, R.; Ungaro, M.; Venturelli, L.; Voskanyan, H.; Vossen, A.; Voutier, E.; Wei, K.; Wei, X.; Wishart, R.; Wood, M. H.; Yale, B.; Zhang, J.; Zhao, Z. W.

DOI: 10.1016/j.physletb.2022.136985

발행일: 2022-04-10

유형: Article

저널명: PHYSICS LETTERS B

권: 827

언어: ENG

출판사: ELSEVIER

발행국가: 네덜란드

ISSN: E 1873-2445
P 0370-2693