Measurement of Direct f(0)(980) Photoproduction on the Proton
Abstract
We report on the results of the first measurement of exclusive f_{0}(980) meson photoproduction on protons for E_{gamma}=3.0-3.8 GeV and -t=0.4-1.0 GeV2. Data were collected with the CLAS detector at the Thomas Jefferson National Accelerator Facility. The resonance was detected via its decay in the pi;{+}pi;{-} channel by performing a partial wave analysis of the reaction gammap-->ppi;{+}pi;{-}. Clear evidence of the f_{0}(980) meson was found in the interference between P and S waves at M_{pi;{+}pi;{-}} approximately 1 GeV. The S-wave differential cross section integrated in the mass range of the f_{0}(980) was found to be a factor of about 50 smaller than the cross section for the rho meson. This is the first time the f_{0}(980) meson has been measured in a photoproduction experiment.
Suggested Citation
R De Vita, AP Szczepaniak, KP Adhikari, M Aghasyan, MJ Amaryan, P Ambrozewicz, M Anghinolfi, G Asryan, H Avakian, H Bagdasaryan, N Baillie, JP Ball, NA Baltzell, V Batourine, I Bedlinskiy, M Bellis, N Benmouna, BL Berman, L Bibrzycki, AS Biselli, C Bookwalter, S Bouchigny, S Boiarinov, R Bradford, D Branford, WJ Briscoe, WK Brooks, S Bltmann, VD Burkert, JR Calarco, SL Careccia, DS Carman, L Casey, S Chen, L Cheng, E Clinton, PL Cole, P Collins, D Crabb, H Crannell, V Crede, JP Cummings, D Dale, A Daniel, N Dashyan, R De Masi, E De Sanctis, PV Degtyarenko, A Deur, S Dhamija, KV Dharmawardane, R Dickson, C Djalali, GE Dodge, J Donnelly, D Doughty, M Dugger, OP Dzyubak, H Egiyan, KS Egiyan, L El Fassi, L Elouadrhiri, P Eugenio, G Fedotov, R Fersch, TA Forest, A Fradi, MY Gabrielyan, L Gan, M GarOon, A Gasparian, G Gavalian, N Gevorgyan, GP Gilfoyle, KL Giovanetti, FX Girod, O Glamazdin, J Goett, JT Goetz, W Gohn, E Golovatch, CIO Gordon, RW Gothe, L Graham, KA Griffioen, M Guidal, N Guler, L Guo, V Gyurjyan, C Hadjidakis, K Hafidi, H Hakobyan, RS Hakobyan, C Hanretty, J Hardie, N Hassall, D Heddle, FW Hersman, K Hicks, I Hleiqawi, M Holtrop, CE Hyde, Y Ilieva, DG Ireland, BS Ishkhanov, EL Isupov, MM Ito, D Jenkins, HS Jo, JR Johnstone, K Joo, HG Juengst, T Kageya, N Kalantarians, D Keller, JD Kellie, M Khandaker, P Khetarpal, W Kim, A Klein, FJ Klein, AV Klimenko, P Konczykowski, M Kossov, Z Krahn, LH Kramer, V Kubarovsky, J Kuhn, SE Kuhn, SV Kuleshov, V Kuznetsov, J Lachniet, JM Laget, J Langheinrich, D Lawrence, T Lee, L Lesniak, J Li, K Livingston, M Lowry, HY Lu, M MacCormick, S Malace, N Markov, P Mattione, ME McCracken, B McKinnon, BA Mecking, JJ Melone, MD Mestayer, CA Meyer, T Mibe, K Mikhailov, T Mineeva, R Minehart, M Mirazita, R Miskimen, V Mochalov, V Mokeev, B Moreno, K Moriya, SA Morrow, M Moteabbed, E Munevar, GS Mutchler, P Nadel-Turonski, I Nakagawa, R Nasseripour, S Niccolai, G Niculescu, I Niculescu, BB Niczyporuk, MR Niroula, RA Niyazov, M Nozar, M Osipenko, AI Ostrovidov, K Park, S Park, E Pasyuk, M Paris, C Paterson, SA Pereira, J Pierce, N Pivnyuk, D Pocanic, O Pogorelko, S Pozdniakov, JW Price, Y Prok, D Protopopescu, BA Raue, G Riccardi, G Ricco, M Ripani, BG Ritchie, G Rosner, P Rossi, F Sabati, MS Saini, J Salamanca, C Salgado, A Sandorfi, JP Santoro, V Sapunenko, D Schott, RA Schumacher, VS Serov, YG Sharabian, D Sharov, NV Shvedunov, ES Smith, LC Smith, DI Sober, D Sokhan, A Starostin, A Stavinsky, S Stepanyan, SS Stepanyan, BE Stokes, P Stoler, KA Stopani, II Strakovsky, S Strauch, M Taiuti, DJ Tedeschi, A Teymurazyan, A Tkabladze, S Tkachenko, L Todor, C Tur, M Ungaro, MF Vineyard, AV Vlassov, DP Watts, X Wei, LB Weinstein, DP Weygand, M Williams, E Wolin, MH Wood, A Yegneswaran, M Yurov, L Zana, J Zhang, B Zhao, and M Battaglieri. "Measurement of Direct f(0)(980) Photoproduction on the Proton" Physical Review Letters 102.10 (2009).
Available at: http://works.bepress.com/michael_williams/103