Measurement of the differential cross section for the reaction gamman-->pi- p from deuterium.

Published

Journal Article

We report a measurement of the differential cross section for the gamman-->pi- p process from the CLAS detector at Jefferson Laboratory in Hall B for photon energies between 1.0 and 3.5 GeV and pion center-of-mass (c.m.) angles (thetac.m.) between 50 degrees and 115 degrees. We confirm a previous indication of a broad enhancement around a c.m. energy ([sqrt]s) of 2.1 GeV at thetac.m.=90 degrees in the scaled differential cross section s7dsigma/dt and a rapid falloff in a center-of-mass energy region of about 400 MeV following the enhancement. Our data show an angular dependence of this enhancement as the suggested scaling region is approached for thetac.m. from 70 degrees to 105 degrees.

Full Text

Duke Authors

Cited Authors

  • Chen, W; Mibe, T; Dutta, D; Gao, H; Laget, JM; Mirazita, M; Rossi, P; Stepanyan, S; Strakovsky, II; Amaryan, MJ; Anghinolfi, M; Bagdasaryan, H; Battaglieri, M; Bellis, M; Berman, BL; Biselli, AS; Bookwalter, C; Branford, D; Briscoe, WJ; Brooks, WK; Burkert, VD; Careccia, SL; Carman, DS; Casey, L; Cole, PL; Collins, P; Crede, V; Daniel, A; Dashyan, N; De Vita, R; De Sanctis, E; Deur, A; Dhamija, S; Dickson, R; Djalali, C; Dodge, GE; Doughty, D; Egiyan, H; Eugenio, P; Fedotov, G; Fradi, A; Garçon, M; Gilfoyle, GP; Giovanetti, KL; Girod, FX; Gohn, W; Gothe, RW; Griffioen, KA; Guidal, M; Hakobyan, H; Hanretty, C; Hassall, N; Heddle, D; Hicks, K; Holtrop, M; Hyde, CE; Ilieva, Y; Ireland, DG; Ishkhanov, BS; Isupov, EL; Jo, HS; Johnstone, JR; Joo, K; Keller, D; Khandaker, M; Khetarpal, P; Kim, W; Klein, A; Klein, FJ; Kramer, LH; Kubarovsky, V; Kuhn, SE; Kuleshov, SV; Kuznetsov, V; Livingston, K; Lu, HY; Markov, N; McCracken, ME; McKinnon, B; Meyer, CA; Mineeva, T; Mokeev, V; Moreno, B; Moriya, K; Nadel-Turonski, P; Nasseripour, R; Niccolai, S; Niculescu, I; Niroula, MR; Osipenko, M; Ostrovidov, AI; Park, K; Park, S; Pereira, SA; Pogorelko, O; Pozdniakov, S; Price, JW; Procureur, S; Protopopescu, D; Raue, BA; Ricco, G; Ripani, M; Ritchie, BG; Rosner, G; Sabatié, F; Saini, MS; Salamanca, J; Salgado, C; Schumacher, RA; Sharabian, YG; Sober, DI; Sokhan, D; Stepanyan, SS; Strauch, S; Taiuti, M; Tedeschi, DJ; Tkachenko, S; Ungaro, M; Vineyard, MF; Watts, DP; Weinstein, LB; Weygand, DP; Wood, MH; Yegneswaran, A; Zhang, J; Zhao, B; CLAS Collaboration,

Published Date

  • July 2009

Published In

Volume / Issue

  • 103 / 1

Start / End Page

  • 012301 -

PubMed ID

  • 19659138

Pubmed Central ID

  • 19659138

Electronic International Standard Serial Number (EISSN)

  • 1079-7114

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/physrevlett.103.012301

Language

  • eng