Photoproduction of the f 2 ( 1270 ) Meson Using the CLAS Detector

Carver, M.; Celentano, A.; Hicks, K.; Marsicano, L.; Mathieu, V.; Pilloni, A.; Adhikari, K.  P.; Adhikari, S.; Amaryan, M.  J.; Angelini, G.; Atac, H.; Baltzell, N.  A.; Barion, L.; Battaglieri, M.; Bedlinskiy, I.; Benmokhtar, F.; Bianconi, A.; Biselli, A.  S.; Bondi, M.; 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.; Clary, B.  A.; Cole, P.  L.; Contalbrigo, M.; Crede, V.; D’Angelo, A.; Dashyan, N.; De Vita, R.; Defurne, M.; Deur, A.; Diehl, S.; Djalali, C.; Dugger, M.; Dupre, R.; Egiyan, H.; Ehrhart, M.; Alaoui, A. El; Fassi, L. El; Eugenio, P.; Fedotov, G.; Fegan, S.; Filippi, A.; Gavalian, G.; Gevorgyan, N.; Gilfoyle, G.  P.; Girod, F.  X.; Gothe, R.  W.; Griffioen, K.  A.; Hafidi, K.; Hakobyan, H.; Hattawy, M.; Hayward, T.  B.; Heddle, D.; Holtrop, M.; Huang, Q.; Hyde, C.  E.; Ilieva, Y.; Ireland, D.  G.; Isupov, E.  L.; Jenkins, D.; Jo, H.  S.; Joo, K.; Joosten, S.; Keller, D.; Khanal, A.; Khandaker, M.; Kim, A.; Kim, C.  W.; Klein, F.  J.; Kripko, A.; Kubarovsky, V.; Lanza, L.; Leali, M.; Lenisa, P.; Livingston, K.; MacGregor, I.  J. D.; Marchand, D.; Mascagna, V.; McCracken, M.  E.; McKinnon, B.; Meziani, Z.  E.; Mokeev, V.; Movsisyan, A.; Munevar, E.; Camacho, C. Munoz; 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.; Prok, Y.; Protopopescu, D.; Ripani, M.; Ritchie, B.  G.; Ritman, J.; Rizzo, A.; Rosner, G.; Rowley, J.; Sabatié, F.; Salgado, C.; Schmidt, A.; Schumacher, R.  A.; Sharabian, Y.  G.; Shrestha, U.; Sokhan, D.; Soto, O.; Sparveris, N.; Stepanyan, S.; Strakovsky, I.  I.; Strauch, S.; Tyler, N.; Tyson, R.; Ungaro, M.; Venturelli, L.; Voskanyan, H.; Voutier, E.; Watts, D.  P.; Wei, K.; Wei, X.; Yale, B.; Zachariou, N.; Zhang, J.; Zhao, Z.  W.

doi:10.1103/physrevlett.126.082002

Title: Photoproduction of the $f_{2} (1270)$ Meson Using the CLAS Detector

Journal Article · Thu Feb 25 00:00:00 EST 2021 · Physical Review Letters

DOI:https://doi.org/10.1103/physrevlett.126.082002· OSTI ID:1781689

Carver, M.; Celentano, A.; Hicks, K.; Marsicano, L.; Mathieu, V.; Pilloni, A.; Adhikari, K. P.; Adhikari, S.; Amaryan, M. J.; Angelini, G.; Atac, H.; Baltzell, N. A.; Barion, L.; Battaglieri, M.; Bedlinskiy, I.; Benmokhtar, F.; Bianconi, A.; Biselli, A. S.; Bondi, M.; Bossù, F. more »

The quark structure of the $f_{2} (1270)$ meson has, for many years, been assumed to be a pure quark-antiquark (q$$\bar{q}$$) resonance with quantum numbers J^PC = 2⁺⁺ . Recently, it was proposed that the $f_{2} (1270)$ is a molecular state made from the attractive interaction of two ρ mesons. Such a state would be expected to decay strongly to final states with charged pions due to the dominant decay ρ → π⁺ π^- , whereas decay to two neutral pions would likely be suppressed. Here, we measure for the first time the reaction γp → π⁰π⁰p, using the CEBAF Large Acceptance Spectrometer detector at Jefferson Lab for incident beam energies between 3.6 and 5.4 GeV. Differential cross sections, dσ/dt , for $f_{2} (1270)$ photoproduction are extracted with good precision due to low backgrounds and are compared to theoretical calculations.

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Research Organization:: Mississippi State Univ., Mississippi State, MS (United States); Argonne National Lab. (ANL), Argonne, IL (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Sponsoring Organization:: National Science Foundation (NSF); Centre National de la Recherche Scientifique (CNRS); USDOE Office of Science (SC), Nuclear Physics (NP); Thomas Jefferson National Accelerator Facility; Chilean Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT); Science and Technology Facilities Council; Scottish Universities Physics Alliance (SUPA); National Research Foundation of Korea (NRF)

Contributing Organization:: CLAS Collaboration

Grant/Contract Number:: FG02-07ER41528; AC02-06CH11357; ACT1413; AC05-06OR23177; PID2019–106080 GB-C21; 2018-T1/TIC-10313

OSTI ID:: 1781689

Alternate ID(s):: OSTI ID: 1797945; OSTI ID: 1882404

Journal Information:: Physical Review Letters, Vol. 126, Issue 8; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

References (13)

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First measurement of direct photoproduction of the $a_{2} {(1320)}^{0}$ meson on the proton Celentano, A.; Battaglieri, M.; De Vita, R. Physical Review C, Vol. 102, Issue 3 https://doi.org/10.1103/PhysRevC.102.032201	journal	September 2020
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