Search for Theta(++) pentaquarks in the exclusive reaction gamma p -> K(+)K(-)p

Kubarovsky, V. et al. (2006) Search for Theta(++) pentaquarks in the exclusive reaction gamma p -> K(+)K(-)p. Physical Review Letters, 97(10), (doi: 10.1103/PhysRevLett.97.102001)

Abstract

The reaction gamma p -> pK(+)K(-) was studied at Jefferson Lab with photon energies from 1.8 to 3.8 GeV using a tagged photon beam. The goal was to search for a Theta(++) pentaquark, a narrow, doubly charged baryon state having strangeness S=+1 and isospin I=1, in the pK(+) invariant mass spectrum. No statistically significant evidence of a Theta(++) was found. Upper limits on the total and differential cross section for the reaction gamma p -> K-Theta(++) were obtained in the mass range from 1.5 to 2.0 GeV/c(2), with an upper limit for a narrow resonance with a mass M-Theta(++)=1.54 GeV/c(2) of about 0.15 nb, 95% C.L.. This result places a stringent upper limit on the Theta(++) width Gamma(++)(Theta)< 0.1 MeV/c(2).

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Protopopescu, Dr Dan
• Authors: Kubarovsky, V., Battaglieri, M., De Vita, R., Goett, J., Guo, L., Mutchler, G. S., Stoler, P., Weygand, D. P., Ambrozewicz, P., Anghinolfi, M., Asryan, G., Avakian, H., Bagdasaryan, H., Baillie, N., Ball, J. P., Baltzell, N. A., Batourine, V., Bedlinskiy, I., Bellis, M., Benmouna, N., Berman, B. L., Biselli, A. S., Bouchigny, S., Boiarinov, S., Bradford, R., Branford, D., Briscoe, W. J., Brooks, W. K., Bueltmann, S., Burkert, V. D., Butuceanu, C., Calarco, J. R., Careccia, S. L., Carman, D. S., Chen, S., Clinton, E., Cole, P. L., Collins, P., Coltharp, P., Crabb, D., Crannell, H., Crede, V., Cummings, J. P., De Masi, R., Dale, D., De Sanctis, E., Degtyarenko, P. V., Deur, A., Dharmawardane, K. V., Djalali, C., Dodge, G. E., Donnelly, J., Doughty, D., Dugger, M., Dzyubak, O. P., Egiyan, H., Egiyan, K. S., Elouadrhiri, L., Eugenio, P., Fedotov, G., Funsten, H., Gabrielyan, M. Y., Gan, L., Garcon, M., Gasparian, A., Gavalian, G., Gilfoyle, G. P., Giovanetti, K. L., Girod, F. X., Glamazdin, O., Goetz, J. T., Golovach, E., Gonenc, A., Gordon, C. I. O., Gothe, R. W., Griffioen, K. A., Guidal, M., Guler, N., Gyurjyan, V., Hadjidakis, C., Hafidi, K., Hakobyan, R. S., Hardie, J., Hersman, F. W., Hicks, K., Hleiqawi, I., Holtrop, M., Hyde-Wright, C. E., Ilieva, Y., Ireland, D. G., Ishkhanov, B. S., Isupov, E. L., Ito, M. M., Jenkins, D., Jo, H. S., Joo, K., Juengst, H. G., Kellie, J. D., Khandaker, M., Kim, W., Klein, A., Klein, F. J., Klimenko, A. V., Kossov, M., Kramer, L. H., Kuhn, J., Kuhn, S. E., Kuleshov, S. V., Lachniet, J., Laget, J. M., Langheinrich, J., Lawrence, D., Lee, T., Li, J., Livingston, K., Lu, H., MacCormick, M., Markov, N., McKinnon, B., Mecking, B. A., Melone, J. J., Mestayer, M. D., Meyer, C. A., Mibe, T., Mikhailov, K., Minehart, R., Mirazita, M., Miskimen, R., Mochalov, V., Mokeev, V., Morand, L., Morrow, S. A., Moteabbed, M., Nadel-Turonski, P., Nakagawa, I., Nasseripour, R., Niccolai, S., Niculescu, G., Niculescu, I., Niczyporuk, B. B., Niroula, M. R., Niyazov, R. A., Nozar, M., Osipenko, M., Ostrovidov, A. I., Park, K., Pasyuk, E., Paterson, C., Pierce, J., Pivnyuk, N., Pocanic, D., Pogorelko, O., Pozdniakov, S., Price, J. W., Prok, Y., Protopopescu, D., Raue, B. A., Riccardi, G., Ricco, G., Ripani, M., Ritchie, B. G., Ronchetti, F., Rosner, G., Rossi, P., Sabatie, F., Salgado, C., Santoro, J. P., Sapunenko, V., Schumacher, R. A., Serov, V. S., Sharabian, Y. G., Shvedunov, N. V., Smith, E. S., Smith, L. C., Sober, D. I., Stavinsky, A., Stepanyan, S. S., Stepanyan, S., Stokes, B. E., Strakovsky, I. I., Strauch, S., Taiuti, M., Tedeschi, D. J., Teymurazyan, A., Thoma, U., Tkabladze, A., Tkachenko, S., Todor, L., Tur, C., Ungaro, M., Vineyard, M. F., Vlassov, A. V., Weinstein, L. B., Williams, M., Wolin, E., Wood, M. H., Yegneswaran, A., Zana, L., 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