Photoproduction of the omega meson on the proton at large momentum transfer

M Battaglieri; M Brunoldi; R De Vita; J M Laget; M Osipenko; M Ripani; M Taiuti; G Adams; M J Amaryan; E Anciant; M Anghinolfi; D S Armstrong; B Asavapibhop; G Asryan; G Audit; T Auger; H Avakian; S Barrow; K Beard; M Bektasoglu; B L Berman; A Bersani; N Bianchi; A S Biselli; S Boiarinov; S Bouchigny; R Bradford; D Branford; W J Briscoe; W K Brooks; V D Burkert; J R Calarco; G P Capitani; D S Carman; B Carnahan; A Cazes; C Cetina; P L Cole; A Coleman; D Cords; P Corvisiero; D Crabb; H Crannell; J P Cummings; E DeSanctis; P V Degtyarenko; R Demirchyan; H Denizli; L Dennis; K V Dharmawardane; K S Dhuga; C Djalali; G E Dodge; D Doughty; P Dragovitsch; M Dugger; S Dytman; M Eckhause; H Egiyan; K S Egiyan; L Elouadrhiri; L Farhi; R J Feuerbach; J Ficenec; T A Forest; A P Freyberger; V Frolov; H Funsten; S J Gaff; M Gai; M Garcon; G Gavalian; S Gilad; G P Gilfoyle; K L Giovanetti; E Golovach; K Griffioen; M Guidal; M Guillo; L Guo; V Gyurjyan; C Hadjidakis; D Hancock; J Hardie; D Heddle; F W Hersman; K Hicks; R S Hicks; M Holtrop; C E Hyde-Wright; M M Ito; K Joo; J H Kelley; M Khandaker; W Kim; A Klein; F J Klein; A V Klimenko; M Klusman; M Kossov; L H Kramer; Y Kuang; S E Kuhn; J Lachniet; D Lawrence; M Lucas; K Lukashin; R W Major; J J Manak; C Marchand; S McAleer; J McCarthy; J W C McNabb; B A Mecking; M D Mestayer; C A Meyer; K Mikhailov; M Mirazita; R Miskimen; V Mokeev; S Morrow; M U Mozer; V Muccifora; J Mueller; G S Mutchler; J Napolitano; S O Nelson; S Niccolai; B B Niczyporuk; R A Niyazov; M Nozar; J T O'Brien; A K Opper; G Peterson; S A Philips; N Pivnyuk; D Pocanic; O Pogorelko; E Polli; B M Preedom; J W Price; D Protopopescu; L M Qin; B A Raue; A R Reolon; G Riccardi; G Ricco; B G Ritchie; F Ronchetti; P Rossi; D Rowntree; P D Rubin; K Sabourov; C Salgado; V Sapunenko; R A Schumacher; V S Serov; A Shafi; Y G Sharabian; J Shaw; A V Skabelin; E S Smith; T Smith; L C Smith; D I Sober; M Spraker; A Stavinsky; S Stepanyan; P Stoler; S Taylor; D J Tedeschi; L Todor; U Thoma; R Thompson; M F Vineyard; A V Vlassov; K Wang; L B Weinstein; H Weller; D P Weygand; C S Whisnant; E Wolin; M Wood; A Yegneswaran; J Yun; B Zhang; J Zhao; Z Zhou; CLAS Collaboration

doi:10.1103/PhysRevLett.90.022002

Photoproduction of the omega meson on the proton at large momentum transfer

Phys Rev Lett. 2003 Jan 17;90(2):022002. doi: 10.1103/PhysRevLett.90.022002. Epub 2003 Jan 16.

Authors

M Battaglieri¹, M Brunoldi, R De Vita, J M Laget, M Osipenko, M Ripani, M Taiuti, G Adams, M J Amaryan, E Anciant, M Anghinolfi, D S Armstrong, B Asavapibhop, G Asryan, G Audit, T Auger, H Avakian, S Barrow, K Beard, M Bektasoglu, B L Berman, A Bersani, N Bianchi, A S Biselli, S Boiarinov, S Bouchigny, R Bradford, D Branford, W J Briscoe, W K Brooks, V D Burkert, J R Calarco, G P Capitani, D S Carman, B Carnahan, A Cazes, C Cetina, P L Cole, A Coleman, D Cords, P Corvisiero, D Crabb, H Crannell, J P Cummings, E DeSanctis, P V Degtyarenko, R Demirchyan, H Denizli, L Dennis, K V Dharmawardane, K S Dhuga, C Djalali, G E Dodge, D Doughty, P Dragovitsch, M Dugger, S Dytman, M Eckhause, H Egiyan, K S Egiyan, L Elouadrhiri, L Farhi, R J Feuerbach, J Ficenec, T A Forest, A P Freyberger, V Frolov, H Funsten, S J Gaff, M Gai, M Garcon, G Gavalian, S Gilad, G P Gilfoyle, K L Giovanetti, E Golovach, K Griffioen, M Guidal, M Guillo, L Guo, V Gyurjyan, C Hadjidakis, D Hancock, J Hardie, D Heddle, F W Hersman, K Hicks, R S Hicks, M Holtrop, C E Hyde-Wright, M M Ito, K Joo, J H Kelley, M Khandaker, W Kim, A Klein, F J Klein, A V Klimenko, M Klusman, M Kossov, L H Kramer, Y Kuang, S E Kuhn, J Lachniet, D Lawrence, M Lucas, K Lukashin, R W Major, J J Manak, C Marchand, S McAleer, J McCarthy, J W C McNabb, B A Mecking, M D Mestayer, C A Meyer, K Mikhailov, M Mirazita, R Miskimen, V Mokeev, S Morrow, M U Mozer, V Muccifora, J Mueller, G S Mutchler, J Napolitano, S O Nelson, S Niccolai, B B Niczyporuk, R A Niyazov, M Nozar, J T O'Brien, A K Opper, G Peterson, S A Philips, N Pivnyuk, D Pocanic, O Pogorelko, E Polli, B M Preedom, J W Price, D Protopopescu, L M Qin, B A Raue, A R Reolon, G Riccardi, G Ricco, B G Ritchie, F Ronchetti, P Rossi, D Rowntree, P D Rubin, K Sabourov, C Salgado, V Sapunenko, R A Schumacher, V S Serov, A Shafi, Y G Sharabian, J Shaw, A V Skabelin, E S Smith, T Smith, L C Smith, D I Sober, M Spraker, A Stavinsky, S Stepanyan, P Stoler, S Taylor, D J Tedeschi, L Todor, U Thoma, R Thompson, M F Vineyard, A V Vlassov, K Wang, L B Weinstein, H Weller, D P Weygand, C S Whisnant, E Wolin, M Wood, A Yegneswaran, J Yun, B Zhang, J Zhao, Z Zhou; CLAS Collaboration

Affiliation

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

PMID: 12570539
DOI: 10.1103/PhysRevLett.90.022002

Abstract

The differential cross section, dsigma/dt, for omega meson exclusive photoproduction on the proton above the resonance region (2.6<W<2.9 GeV) was measured up to a momentum transfer -t=5 GeV2 using the CLAS detector at Jefferson Laboratory. The omega channel was identified by detecting a proton and pi(+) in the final state and using the missing mass technique. While the low momentum transfer region shows the typical diffractive pattern expected from Pomeron and Reggeon exchange, at large -t the differential cross section has a flat behavior. This feature can be explained by introducing quark interchange processes in addition to the QCD-inspired two-gluon exchange.