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Phys Rev Lett. 2009 Mar 13;102(10):102001. doi: 10.1103/PhysRevLett.102.102001. Epub 2009 Mar 11.

Measurement of direct f0(980) photoproduction on the proton.

Physical review letters

M Battaglieri, R De Vita, A P Szczepaniak, K P Adhikari, M Aghasyan, M J Amaryan, P Ambrozewicz, M Anghinolfi, G Asryan, H Avakian, H Bagdasaryan, N Baillie, J P Ball, N A Baltzell, V Batourine, I Bedlinskiy, M Bellis, N Benmouna, B L Berman, L Bibrzycki, A S Biselli, C Bookwalter, S Bouchigny, S Boiarinov, R Bradford, D Branford, W J Briscoe, W K Brooks, S Bültmann, V D Burkert, J R Calarco, S L Careccia, D S Carman, L Casey, S Chen, L Cheng, E Clinton, P L Cole, P Collins, D Crabb, H Crannell, V Crede, J P Cummings, D Dale, A Daniel, N Dashyan, R De Masi, E De Sanctis, P V Degtyarenko, A Deur, S Dhamija, K V Dharmawardane, R Dickson, C Djalali, G E Dodge, J Donnelly, D Doughty, M Dugger, O P Dzyubak, H Egiyan, K S Egiyan, L El Fassi, L Elouadrhiri, P Eugenio, G Fedotov, R Fersch, T A Forest, A Fradi, M Y Gabrielyan, L Gan, M Garçon, A Gasparian, G Gavalian, N Gevorgyan, G P Gilfoyle, K L Giovanetti, F X Girod, O Glamazdin, J Goett, J T Goetz, W Gohn, E Golovatch, C I O Gordon, R W Gothe, L Graham, K A Griffioen, M Guidal, N Guler, L Guo, V Gyurjyan, C Hadjidakis, K Hafidi, H Hakobyan, R S Hakobyan, C Hanretty, J Hardie, N Hassall, D Heddle, F W Hersman, K Hicks, I Hleiqawi, M Holtrop, C E Hyde, Y Ilieva, D G Ireland, B S Ishkhanov, E L Isupov, M M Ito, D Jenkins, H S Jo, J R Johnstone, K Joo, H G Juengst, T Kageya, N Kalantarians, D Keller, J D Kellie, M Khandaker, P Khetarpal, W Kim, A Klein, F J Klein, A V Klimenko, P Konczykowski, M Kossov, Z Krahn, L H Kramer, V Kubarovsky, J Kuhn, S E Kuhn, S V Kuleshov, V Kuznetsov, J Lachniet, J M Laget, J Langheinrich, D Lawrence, T Lee, L Lesniak, Ji Li, K Livingston, M Lowry, H Y Lu, M Maccormick, S Malace, N Markov, P Mattione, M E McCracken, B McKinnon, B A Mecking, J J Melone, M D Mestayer, C A Meyer, T Mibe, K Mikhailov, T Mineeva, R Minehart, M Mirazita, R Miskimen, V Mochalov, V Mokeev, B Moreno, K Moriya, S A Morrow, M Moteabbed, E Munevar, G S Mutchler, P Nadel-Turonski, I Nakagawa, R Nasseripour, S Niccolai, G Niculescu, I Niculescu, B B Niczyporuk, M R Niroula, R A Niyazov, M Nozar, M Osipenko, A I Ostrovidov, K Park, S Park, E Pasyuk, M Paris, C Paterson, S Anefalos Pereira, J Pierce, N Pivnyuk, D Pocanic, O Pogorelko, S Pozdniakov, J W Price, Y Prok, D Protopopescu, B A Raue, G Riccardi, G Ricco, M Ripani, B G Ritchie, G Rosner, P Rossi, F Sabatié, M S Saini, J Salamanca, C Salgado, A Sandorfi, J P Santoro, V Sapunenko, D Schott, R A Schumacher, V S Serov, Y G Sharabian, D Sharov, N V Shvedunov, E S Smith, L C Smith, D I Sober, D Sokhan, A Starostin, A Stavinsky, S Stepanyan, S S Stepanyan, B E Stokes, P Stoler, K A Stopani, I I Strakovsky, S Strauch, M Taiuti, D J Tedeschi, A Teymurazyan, A Tkabladze, S Tkachenko, L Todor, C Tur, M Ungaro, M F Vineyard, A V Vlassov, D P Watts, X Wei, L B Weinstein, D P Weygand, M Williams, E Wolin, M H Wood, A Yegneswaran, M Yurov, L Zana, J Zhang, B Zhao, Z W Zhao,

Affiliations

  1. Istituto Nazionale di Fisica Nucleare, Sezione di Genova, 16146 Genova, Italy.

PMID: 19392104 DOI: 10.1103/PhysRevLett.102.102001

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.

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