Measurement of the Differential Cross Section for the Reaction γn→π−p from Deuterium
- Chen, W.
- Mibe, T.
- Dutta, D.
- Gao, H.
- Laget, J.M.
- Mirazita, M.
- Rossi, P.
- Stepanyan, S.
- Strakovsky, I.I.
- Amaryan, M.J.
- Anghinolfi, M.
- Bagdasaryan, H.
- Battaglieri, M.
- Bellis, M.
- Berman, B.L.
- Biselli, A.S.
- Bookwalter, C.
- Branford, D.
- Briscoe, W.J.
- Brooks, W.K.
- Burkert, V.D.
- Careccia, S.L.
- Carman, D.S.
- Casey, L.
- Cole, P.L.
- Collins, P.
- Crede, V.
- Daniel, A.
- Dashyan, N.
- De Vita, R.
- De Sanctis, E.
- Deur, A.
- Dhamija, S.
- Dickson, R.
- Djalali, C.
- Dodge, G.E.
- Doughty, D.
- Egiyan, H.
- Eugenio, P.
- Fedotov, G.
- Fradi, A.
- Garcon, M.
- Gilfoyle, G.P.
- Giovanetti, K.L.
- Girod, F.X.
- Gohn, W.
- Gothe, R.W.
- Griffioen, K.A.
- Guidal, M.
- Hakobyan, H.
- Hanretty, C.
- Hassall, N.
- Heddle, D.
- Hicks, K.
- Holtrop, M.
- Hyde, C.E.
- Ilieva, Y.
- Ireland, D.G.
- Ishkhanov, B.S.
- Isupov, E.L.
- Jo, H.S.
- Johnstone, J.R.
- Joo, K.
- Keller, D.
- Khandaker, M.
- Khetarpal, P.
- Kim, W.
- Klein, A.
- Klein, F.J.
- Kramer, L.H.
- Kubarovsky, V.
- Kuhn, S.E.
- Kuleshov, S.V.
- Kuznetsov, V.
- Livingston, K.
- Lu, H.Y.
- Markov, N
- McCracken, M.E.
- McKinnon, B.
- Meyer, C.A.
- Mineeva, T.
- Mokeev, V.
- Moreno, B.
- Moriya, K.
- Nadel-Turonski, P.
- Nasseripour, R.
- Niccolai, S.
- Niculescu, I.
- Niroula, M.R.
- Osipenko, M.
- Ostrovidov, A.
- Park, K.
- Park, S.
- Pereira, S.A.
- Pogorelko, O.
- Pozdniakov, S.
- Price, J.W.
- Procureur, S.
- Protopopescu, D.
- Raue, B.A.
- Ricco, G.
- Ripani, M.
- Ritchie, B.G.
- Rosner, G.
- Sabatie, F.
- Saini, M.S.
- Salamanca, J.
- Salgado, C.
- Schumacher, R.A.
- Sharabian, Y.G.
- Sober, D.
- Sokhan, D.
- Stepanyan, S.S.
- Strauch, S.
- Taiuti, M.
- Tedeschi, D.J.
- Tkachenko, S.
- Ungaro, M.
- Vineyard, M.F.
- Watts, D.P.
- Weinstein, L.B.
- Weygand, D.P.
- Wood, M.H.
- Yegneswaran, A.
- Zhang, J.
- Zhao, B.
Publication date
July 2009
DOI Publisher
American Physical Society (APS) ISSN
0031-9007Abstract
We report a measurement of the differential cross section for the γn→π−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 (θc.m.) between 50° and 115°. We confirm a previous indication of a broad enhancement around a c.m. energy (s√) of 2.1 GeV at θc.m.=90° in the scaled differential cross section s7dσdt 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 θc.m. from 70° to 105°
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