Measurement of the Differential Cross Section for the Reaction γn→π−p from Deuterium

Chen, W. et al. (2009) Measurement of the Differential Cross Section for the Reaction γn→π−p from Deuterium. Physical Review Letters, 103(1), 012301. (doi:10.1103/PhysRevLett.103.012301)

Chen, W. et al. (2009) Measurement of the Differential Cross Section for the Reaction γn→π−p from Deuterium. Physical Review Letters, 103(1), 012301. (doi:10.1103/PhysRevLett.103.012301)

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Abstract

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°.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Sokhan, Dr Daria and Watts, Dr Daniel and Protopopescu, Dr Dan and McKinnon, Dr Bryan and Livingston, Dr Kenneth and Ireland, Professor David and Hassall, Mr Neil and Rosner, Professor Guenther and Johnstone, Mr John
Authors: 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., and Zhao, B.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review Letters
Publisher:American Physical Society
ISSN:0031-9007
ISSN (Online):1079-7114
Published Online:01 July 2009

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