Differential cross sections for gamma plus p -> K(+)+ Y for Lambda and Sigma(0) hyperons

Bradford, R. et al. (2006) Differential cross sections for gamma plus p -> K(+)+ Y for Lambda and Sigma(0) hyperons. Physical Review C, 73(3), (doi: 10.1103/PhysRevC.73.035202)

Abstract

High-statistics cross sections for the reactions gamma+p -> K(+)+Lambda and gamma+p -> K(+)+Sigma(0) have been measured using CLAS at Jefferson Lab for center-of-mass energies W between 1.6 and 2.53 GeV, and for -0.85 < cos theta(K)(+c.m.)<+0.95. In the K(+)Lambda channel we confirm a resonance-like structure near W=1.9 GeV at backward kaon angles. The position and width of this structure change with angle, indicating that more than one resonance is likely playing a role. The K(+)Lambda channel at forward angles and all energies is well described by a t-channel scaling characteristic of Regge exchange, whereas the same scaling applied to the K(+)Sigma(0) channel is less successful. Several existing theoretical models are compared to the data, but none provide a good representation of the results.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Protopopescu, Dr Dan
• Authors: Bradford, R., Schumacher, R., McNabb, J., Todor, L., Adams, G., Ambrozewicz, P., Anciant, E., Anghinolfi, M., Asavapibhop, B., Asryan, G., Audit, G., Avakian, H., Bagdasaryan, H., Baillie, N., Ball, J., Baltzell, N., Barrow, S., Batourine, V., Battaglieri, M., Beard, K., Bedlinskiy, I., Bektasoglu, M., Bellis, M., Benmouna, N., Berman, B., Bianchi, N., Biselli, A., Bonner, B., Bouchigny, S., Boiarinov, S., Branford, D., Briscoe, W., Brooks, W., Bultmann, S., Burkert, V., Butuceanu, C., Calarco, J., Careccia, S., Carman, D., Carnahan, B., Chen, S., Cole, P., Coleman, A., Coltharp, P., Corvisiero, P., Crabb, D., Crannell, H., Cummings, J., DeVita, R., Sanctis, E., Degtyarenko, P., Denizli, H., Dennis, L., Deur, A., Dharmawardane, K., Dhuga, K., Djalali, C., Dodge, G., Donnelly, J., Doughty, D., Dragovitsch, P., Dugger, M., Dytman, S., Dzyubak, O., Egiyan, H., Egiyan, K., Elouadrhiri, L., Empl, A., Eugenio, P., Fatemi, R., Fedotov, G., Feldman, G., Feuerbach, R., Forest, T., Funsten, H., Garcon, M., Gavalian, G., Gilfoyle, G., Giovanetti, K., Girod, F., Goetz, J., Golovatch, E., Gonenc, A., Gothe, R., Griffioen, K., Guidal, M., Guillo, M., Guler, N., Guo, L., Gyurjyan, V., Hadjidakis, C., Hakobyan, R., Hardie, J., Heddle, D., Hersman, F., Hicks, K., Hleiqawi, I., Holtrop, M., Hu, J., Huertas, M., Hyde-Wright, C., Ilieva, Y., Ireland, D., Ishkhanov, B., Ito, M., Jenkins, D., Jo, H., Joo, K., Juengst, H., Kellie, J., Khandaker, M., Kim, K., Kim, K., Kim, W., Klein, A., Klein, F., Klimenko, A., Klusman, M., Kossov, M., Kramer, L., Kubarovsky, V., Kuhn, J., Kuhn, S., Kuleshov, S., Lachniet, J., Laget, J., Langheinrich, J., Lawrence, D., Lima, A., Livingston, K., Lukashin, K., Manak, J., Marchand, C., McAleer, S., McKinnon, B., Mecking, B., Mestayer, M., Meyer, C., Mibe, T., Mikhailov, K., Minehart, R., Mirazita, M., Miskimen, R., Mokeev, V., Morrow, S., Muccifora, V., Mueller, J., Mutchler, G., Nadel-Turonski, P., Napolitano, J., Nasseripour, R., Niccolai, S., Niculescu, G., Niculescu, I., Niczyporuk, B., Niyazov, R., Nozar, M., O'Rielly, G., Osipenko, M., Ostrovidov, A., Park, K., Pasyuk, E., Paterson, C., Philips, S., Pierce, J., Pivnyuk, N., Pocanic, D., Pogorelko, O., Polli, E., Popa, I., Pozdniakov, S., Preedom, B., Price, J., Prok, Y., Protopopescu, D., Qin, L., Quinn, B., Raue, B., Riccardi, G., Ricco, G., Ripani, M., Ritchie, B., Ronchetti, F., Rosner, G., Rossi, P., Rowntree, D., Rubin, P., Sabatie, F., Salgado, C., Santoro, J., Sapunenko, V., Serov, V., Shafi, A., Sharabian, Y., Shaw, J., Simionatto, S., Skabelin, A., Smith, E., Smith, L., Sober, D., Spraker, M., Stavinsky, A., Stepanyan, S., Stepanyan, S., Stokes, B., Stoler, P., Strakovsky, I., Strauch, S., Suleiman, R., Taiuti, M., Taylor, S., Tedeschi, D., Thoma, U., Thompson, R., Tkabladze, A., Tkachenko, S., Tur, C., Ungaro, M., Vineyard, M., Vlassov, A., Wang, K., Weinstein, L., Weller, H., Weygand, D., Williams, M., Wolin, E., Wood, M., Yegneswaran, A., Yun, J., Zana, L., Zhang, J., and Zhao, B.
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Physical Review C
• ISSN: 0556-2813