Beam–target helicity asymmetry E in K+Σ- photoproduction on the neutron

Zachariou, N.; Watts, D. P.; Fleming, J.; Sarantsev, A. V.; Nikonov, V. A.; D'Angelo, A.; Bashkanov, M.; Hanretty, C.; Kageya, T.; Klein, F. J.; Lowry, M.; Lu, H.; Sandorfi, A.; Wei, X.; Zonta, I.; Adhikari, K. P.; Adhikari, S.; Amaryan, M. J.; Angelini, G.; Asryan, G.; Atac, H.; Barion, L.; Bass, C.; Battaglieri, M.; Bedlinskiy, I.; Benmokhtar, F.; Bianconi, A.; Biselli, A. S.; Bossù, F.; Boiarinov, S.; Briscoe, W. J.; Brooks, W. K.; Bulumulla, D.; Burkert, V.; Carman, D. S.; Carvajal, J. C.; Celentano, A.; Charles, G.; Chatagnon, P.; Chetry, T.; Ciullo, G.; Cole, P. L.; Contalbrigo, M.; Dashyan, N.; De Vita, R.; Deur, A.; Diehl, S.; Djalali, C.; Dupre, R.; Egiyan, H.; Ehrhart, M.; El Alaoui, A.; Eugenio, P.; Fegan, S.; Fersch, R.; Filippi, A.; Gavalian, G.; Gevorgyan, N.; Ghandilyan, Y.; Gilfoyle, G. P.; Girod, F. X.; Gohn, W.; Golovatch, E.; Gothe, R. W.; Griffioen, K. A.; Guidal, M.; Hafidi, K.; Hakobyan, H.; Hattawy, M.; Heddle, D.; Hicks, K.; Ho, D.; Holtrop, M.; Ilieva, Y.; Ireland, D. G.; Ishkhanov, B. S.; Isupov, E. L.; Jenkins, D.; Jo, H. S.; Joo, K.; Joosten, S. J.; Keller, D.; Khachatryan, M.; Khanal, A.; Khandaker, M.; Kim, C. W.; Kim, W.; Kubarovsky, V.; Lanza, L.; Leali, M.; Lenisa, P.; Livingston, K.; MacGregor, I. J.D.; Marchand, D.; Markov, N.; Marsicano, L.; Mascagna, V.; Mayer, M.; McKinnon, B.; Meziani, Z. E.; Mineeva, T.; Mokeev, V.; Munevar, E.; Munoz Camacho, C.; Nadel Turonski, P.; O'Connell, T. R.; Osipenko, M.; Ostrovidov, A. I.; Paolone, M.; Pappalardo, L. L.; Park, K.; Pasyuk, E.; Peng, P.; Phelps, W.; Pogorelko, O.; Poudel, J.; Price, J. W.; Prok, Y.; Puckett, A. J.R.; Raue, B. A.; Ripani, M.; Rizzo, A.; Rosner, G.; Salgado, C.; Schmidt, A.; Schumacher, R. A.; Shrestha, U.; Sokhan, D.; Soto, O.; Sparveris, N.; Strakovsky, I. I.; Strauch, S.; Tan, J. A.; Tyler, N.; Ungaro, M.; Venturelli, L.; Voskanyan, H.; Voutier, E.; Walford, N. K.; Whisnant, C. S.; Wood, M. H.; Zhang, J.; Zhao, Z. W.

doi:10.1016/j.physletb.2020.135662

Title: Beam–target helicity asymmetry E in K⁺Σ^- photoproduction on the neutron

Journal Article · 30 July 2020 · Physics Letters B

DOI: https://doi.org/10.1016/j.physletb.2020.135662 · OSTI ID:1644145

; Watts, D. P.;

; Sarantsev, A. V.; Nikonov, V. A.;

; Bashkanov, M.; Hanretty, C.; Kageya, T.;

; Lowry, M.;

; Sandorfi, A.; Wei, X.; Zonta, I.; Adhikari, K. P.; Adhikari, S.; Amaryan, M. J.;

; Asryan, G. more »

We report a measurement of a beam–target double-polarisation observable ( E ) for the $$\vec γ \vec n$$(p) → K⁺Σ^-(p) reaction. The data were obtained impinging the circularly-polarised energy-tagged photon beam of Hall B at Jefferson Lab on a longitudinally-polarised frozen-spin hydrogen deuteride (HD) nuclear target. The E observable for an effective neutron target was determined for centre-of-mass energies 1.70 ≤ W ≤ 2.30 GeV, with reaction products detected over a wide angular acceptance by the CLAS spectrometer. These new double-polarisation data give unique constraints on the strange decays of excited neutron states. Inclusion of the new data within the Bonn-Gatchina theoretical model results in significant changes for the extracted photocouplings of a number of established nucleon resonances. Possible improvements in the PWA description of the experimental data with additional “missing” resonance states, including the N(2120)^{3/2^-} resonance, are also quantified.

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Research Organization:: George Washington Univ., Washington, DC (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP); Science and Technology Facilities Council (STFC) (United Kingdom); Russian Science Foundation; National Science Foundation (NSF); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); National Research Foundation of Korea (NRF); Chilean Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT); Commissariat a l’Energie Atomique (CEA); United Kingdom Science and Technology Facilities Council; Istituto Nazionale di Fisica Nucleare; Institut National de la Recherche Scientifique (INRS); Science and Technology Facilities Council (STFC) (United Kingdom) Russian Science Foundation

Contributing Organization:: The CLAS Collaboration

Grant/Contract Number:: SC0016583; AC05-06OR23177; ST/P004385/2; ST/T002077/1; ST/L00478X/2; RSF16-12-10267; AC02-06CH11357

OSTI ID:: 1644145

Alternate ID(s):: OSTI ID: 1646831; OSTI ID: 1726245; OSTI ID: 1787252; OSTI ID: 1798701

Report Number(s):: JLAB-PHY-20-3168; DOE-OR-23177-4947; TRN: US2205092

Journal Information:: Physics Letters B, Vol. 808; ISSN 0370-2693

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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