Photoproduction of the $f_2(1270)$ meson using the CLAS detector
Creators: name: ~Carver, M.
name: ~Celentano, A.
name: ~Hicks, K.
name: ~Marsicano, L.
name: ~Mathieu, V.
name: ~Pilloni, A.
name: ~Adhikari, K. P.
name: Adhikari, S.
name: ~Amaryan, M. J.
name: Angelini, Giovanni
name: ~Atac, H.
name: ~Baltzell, N. A.
name: Barion, L.
name: ~Battaglieri, M.
name: ~Bedlinskiy, I.
name: Benmokhtar, Fatiha
name: ~Bianconi, A.
name: ~Biselli, A. S.
name: ~Bondi, M.
name: ~Bossù, F.
name: ~Boiarinov, S.
name: ~Briscoe, W. J.
name: ~Brooks, W. K.
name: ~Bulumulla, D.
name: ~Burkert, V. D.
name: ~Carman, D. S.
name: ~Carvajal, J. C.
name: ~Chatagnon, P.
name: ~Chetry, T.
name: ~Ciullo, G.
name: ~Clark, L.
name: ~Clary, B. A.
name: ~Cole, P. L.
name: ~Contalbrigo, M.
name: ~Crede, V.
name: ~D'Angelo, A.
name: ~Dashyan, N.
name: ~De~Vita, R.
name: Defurne, M.
name: ~Deur, A.
name: Diehl, S.
name: ~Djalali, C.
name: ~Dugger, M.
name: ~Dupre, R.
name: ~Egiyan, H.
name: ~Ehrhart, M.
name: ~El~Alaoui, A.
name: ~El~Fassi, L.
name: ~Eugenio, P.
name: ~Fedotov, G.
name: ~Fegan, S.
name: ~Filippi, A.
name: ~Gavalian, G.
name: ~Gevorgyan, N.
name: ~Gilfoyle, G. P.
name: ~Girod, F. X.
name: ~Gothe, R. W.
name: ~Griffioen, K. A.
name: ~Hafidi, K.
name: ~Hakobyan, H.
name: ~Hattawy, M.
name: ~Hayward, T. B.
name: ~Heddle, D.
name: ~Holtrop, M.
name: ~Huang, Q.
name: ~Hyde, C. E.
name: ~Ilieva, Y.
name: ~Ireland, D. G.
name: ~Isupov, E. L.
name: ~Jenkins, D.
name: ~Jo, H. S.
name: ~Joo, K.
name: Joosten, S. ~
name: ~Keller, D.
name: ~Khanal, A.
name: ~Khandaker, M.
name: ~Kim, A.
name: ~Kim, C. W.
name: ~Klein, F. J.
name: ~Kripko, A.
name: ~Kubarovsky, V.
name: ~Lanza, L.
name: ~Leali, M.
name: ~Lenisa, P.
name: ~Livingston, K.
name: ~MacGregor, I. J. D.
name: ~Marchand, D.
name: ~Mascagna, V.
name: ~McCracken, M. E.
name: ~McKinnon, B.
name: ~Meziani, Z. E.
name: ~Mokeev, V.
name: A~Movsisyan
name: ~Munevar, E.
name: ~Munoz~Camacho, C.
name: ~Nadel-Turonski, P.
name: ~Neupane, K.
name: ~Niccolai, S.
name: ~Niculescu, G.
name: ~Osipenko, M.
name: ~Ostrovidov, A. I.
name: ~Paolone, M.
name: ~Pappalardo, L. L.
name: ~Paremuzyan, R.
name: ~Pasyuk, E.
name: ~Phelps, W.
name: ~Pogorelko, O.
name: ~Prok, Y.
name: ~Protopopescu, D.
name: ~Ripani, M.
name: ~Ritchie, B. G.
name: ~Ritman, J.
name: ~Rizzo, A.
name: ~Rosner, G.
name: ~Rowley, J.
name: ~Sabatié, F.
name: ~Salgado, C.
name: ~Schmidt, A.
name: ~Schumacher, R. A.
name: ~Sharabian, Y. G.
name: ~Shrestha, U.
name: ~Sokhan, D.
name: ~Soto, O.
name: ~Sparveris, N.
name: ~Stepanyan, S.
name: ~Strakovsky, I. I.
name: ~Strauch, S.
name: ~Tyler, N.
name: ~Tyson, R.
name: ~Ungaro, M.
name: ~Venturelli, L.
name: ~Voskanyan, H.
name: ~Voutier, E.
name: ~Watts, D. P.
name: ~Wei, K.
name: ~Wei, X.
name: ~Yale, B.
name: ~Zachariou, N.
name: ~Zhang, J.
name: ~Zhao, Z. W.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: 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 $ρ\to π^+ π^-$, whereas decay to two neutral pions would likely be suppressed. Here, we measure for the first time the reaction $γp \to π^0 π^0 p$, using the CLAS detector at Jefferson Lab for incident beam energies between 3.6-5.4~GeV. Differential cross sections, $dσ/ dt$, for $f_2(1270)$ photoproduction are extracted with good precision, due to low backgrounds, and are compared with theoretical calculations.
description: 5 pages, 4 figures