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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. E. ; Fassi, L. E. ; 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.FZJ* ; Joo, K. ; Joosten, S. ; Keller, D. ; Khanal, A. ; Khandaker, M. ; Kim, T.FZJ* ; Kim, C. W. ; Klein, F.FZJ* ; 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. M. ; 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. (Corresponding author)FZJ* ; Rizzo, A. ; Rosner, G. ; Rowley, J. ; Sabatié, F. ; Salgado, C. ; Schmidt, A.FZJ* ; Tichelbäcker, L.FZJ* ; 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, D.FZJ* ; Wei, X.FZJ* ; Yale, B. ; Zachariou, N. ; Zhang, J.FZJ* ; Zhao, Z. W.
2021
APS
College Park, Md.
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Please use a persistent id in citations: http://hdl.handle.net/2128/27767 doi:10.1103/PhysRevLett.126.082002
Abstract: The quark structure of the f2(1270) meson has, for many years, been assumed to be a pure quark-antiquark (qq¯) resonance with quantum numbers JPC=2++. Recently, it was proposed that the f2(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 CLAS detector at Jefferson Lab for incident beam energies between 3.6-5.4~GeV. Differential cross sections, dσ/dt, for f2(1270) photoproduction are extracted with good precision, due to low backgrounds, and are compared with theoretical calculations.
Contributing Institute(s):
- Experimentelle Hadronstruktur (IKP-1)
Research Program(s):
- 612 - Cosmic Matter in the Laboratory (POF4-612) (POF4-612)
- 6G12 - FAIR (GSI) (POF4-6G12) (POF4-6G12)
Appears in the scientific report
2021
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