Measurement of ep → e ' p pi(+)pi(-) and baryon resonance analysis

Ripani, M. et al. (2003) Measurement of ep → e ' p pi(+)pi(-) and baryon resonance analysis. Physical Review Letters, 91(2), art 022002. (doi: 10.1103/PhysRevLett.91.022002)

Abstract

The cross section for the reaction ep→e'ppi(+)pi(-) was measured in the resonance region for 1.4 lt W lt 2.1 GeV and 0.5 lt Q(2) lt 1.5 GeV2/c(2) using the CLAS detector at Jefferson Laboratory. The data show resonant structures not visible in previous experiments. The comparison of our data to a phenomenological prediction using available information on N* and Delta states shows an evident discrepancy. A better description of the data is obtained either by a sizable change of the properties of the P-13(1720) resonance or by introducing a new baryon state, not reported in published analyses.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: UNSPECIFIED
• Authors: Ripani, M., Burkert, V.D., Mokeev, V., Battaglieri, M., De Vita, R., Golovach, E., Taiuti, M., Adams, G., Anciant, E., Anghinolfi, M., Asavapibhop, B., Audit, G., Auger, T., Avakian, H., Bagdasaryan, H., Ball, J., Barrow, S., Beard, K., Bektasoglu, M., Bellis, M., Berman, B.L., Bianchi, N., Biselli, A.S., Boiarinov, S., Bonner, B.E., Bouchigny, S., Bradford, R., Branford, D., Briscoe, W.J., Brooks, W.K., Calarco, J.R., Carman, D.S., Carnahan, B., Cazes, A., Cetina, C., Ciciani, L., Cole, P.L., Coleman, A., Cords, D., Corvisiero, P., Crabb, D., Crannell, H., Cummings, J.P., De Sanctis, E., Degtyarenko, P.V., Denizli, H., Dennis, L., Dharmawardane, K.V., Djalali, C., Dodge, G.E., Doughty, D., Dragovitsch, P., Dugger, M., Dytman, S., Eckhause, M., Egiyan, H., Egiyan, K.S., Elouadrhiri, L., Empl, A., Fatemi, R., Fedotov, G., Feldman, G., Feuerbach, R.J., Ficenec, J., Forest, T.A., Funsten, H., Gaff, S.J., Gai, M., Garcon, M., Gavalian, G., Gilad, S., Gilfoyle, G.P., Giovanetti, K.L., Girard, P., Griffioen, K., Guidal, M., Guillo, M., Guo, L., Gyurjyan, V., Hadjidakis, C., Hardie, J., Heddle, D., Heimberg, P., Hersman, F.W., Hicks, K., Hicks, R.S., Holtrop, M., Hu, J., Hyde-Wright, C.E., Ishkhanov, B., Ito, M.M., Jenkins, D., Joo, K., Kelley, J.H., Kellie, J.D., Khandaker, M., Kim, K.Y., Kim, K., Kim, W., Klein, A., Klein, F.J., Klimenko, A.V., Klusman, M., Kossov, M., Kramer, L.H., Kuang, Y., Kuhn, S.E., Kuhn, J., Lachniet, J., Laget, J.M., Lawrence, D., Li, J., Livingston, K., Longhi, A., Lukashin, K., Manak, J.J., Marchand, C., McAleer, S., McCarthy, J., McNabb, J.W.C., Mecking, B.A., Mestayer, M.D., Meyer, C.A., Mikhailov, K., Minehart, R., Mirazita, M., Miskimen, R., Morand, L., Morrow, S.A., Mozer, M.U., Muccifora, V., Mueller, J., Murphy, L.Y., Mutchler, G.S., Napolitano, J., Nasseripour, R., Nelson, S.O., Niccolai, S., Niculescu, G., Niculescu, I., Niczyporuk, B.B., Niyazov, R.A., Nozar, M., O'Rielly, G.V., Opper, A.K., Osipenko, M., Park, K., Pasyuk, E., Peterson, G., Philips, S.A., Pivnyuk, N., Pocanic, D., Pogorelko, O., Polli, E., Pozdniakov, S., Preedom, B.M., Price, J.W., Prok, Y., Protopopescu, D., Qin, L.M., Quinn, B., Raue, B.A., Riccardi, G., Ricco, G., Ritchie, B.G., Ronchetti, F., Rossi, P., Rowntree, D., Rubin, P.D., Sabatie, F., Sabourov, K., Salgado, C., Santoro, J.P., Sapunenko, V., Schumacher, R.A., Serov, V.S., Shafi, A., Sharabian, Y.G., Shaw, J., Simionatto, S., Skabelin, A.V., Smith, E.S., Smith, L.C., Sober, D.I., Spraker, M., Stavinsky, A., Stepanyan, S., Stoler, P., Strakovsky, I.I., Taylor, S., Tedeschi, D.J., Thoma, U., Thompson, R., Todor, L., Ungaro, M., Vineyard, M.F., Vlassov, A.V., Wang, K., Weinstein, L.B., Weller, H., Weygand, D.P., Whisnant, C.S., Wolin, E., Wood, M.H., Yegneswaran, A., Yun, J., Zhang, B., Zhao, J., and Zhou, Z.
• Subjects: Q Science > QC Physics
• 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