DOI
10.1103/PhysRevC.85.015205
Abstract
We searched for the Φ--(1860) pentaquark in the photoproduction process off the deuteron in the Ξ-π--decay channel using CLAS. The invariant-mass spectrum of the Ξ-π- system does not indicate any statistically significant enhancement near the reported mass M = 1.860 GeV. The statistical analysis of the sideband-subtracted mass spectrum yields a 90%-confidence-level upper limit of 0.7 nb for the photoproduction cross section of Φ--(1860) with a consecutive decay into Ξ-π- in the photon-energy range 4.5 GeV < Eγ < 5.5 GeV.
Document Type
Article
Publication Date
1-30-2012
Publisher Statement
Copyright © 2012 American Physical Society. This article first appeared in Physical Review C 85, no. 1 (January 2012): 015205:1-9. doi:10.1103/PhysRevC.85.015205.
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Recommended Citation
Egiyan, H., J. Langheinrich, R. Gothe, L. Graham, M. Holtrop, H. Lu, P. Mattione, G. Mutchler, K. Park, E. Smith, S. Stepanyan, Z. Zhao, K. Adhikari, M. Aghasyan, M. Anghinolfi, H. Baghdasaryan, J. Ball, N. Baltzell, M. Battaglieri, I. Bedlinskiy, R. Bennett, A. Biselli, C. Bookwalter, D. Branford, W. Briscoe, W. Brooks, V. Burkert, D. Carman, A. Celentano, S. Chandavar, M. Contalbrigo, A. D’Angelo, A. Daniel, N. Dashyan, R. De Vita, E. De Sanctis, A. Deur, B. Dey, R. Dickson, C. Djalali, D. Doughty, R. Dupre, A. El Alaoui, L. El Fassi, P. Eugenio, G. Fedotov, S. Fegan, A. Fradi, M. Gabrielyan, N. Gevorgyan, G. Gilfoyle, K. Giovanetti, F. Girod, J. Goetz, W. Gohn, E. Golovatch, K. Griffioen, M. Guidal, N. Guler, L. Guo, V. Gyurjyan, K. Hafidi, H. Hakobyan, C. Hanretty, D. Heddle, K. Hicks, Y. Ilieva, D. Ireland, B. Ishkhanov, H. Jo, K. Joo, P. Khetarpal, A. Kim, W. Kim, A. Klein, F. Klein, V. Kubarovsky, S. Kuleshov, K. Livingston, I. J. MacGregor, Y. Mao, M. Mayer, B. McKinnon, V. Mokeev, E. Munevar, P. Nadel-Turonski, A. Ni, G. Niculescu, A. Ostrovidov, M. Paolone, L. Pappalardo, R. Paremuzyan, S. Park, E. Pasyuk, S. Anefalos Pereira, E. Phelps, O. Pogorelko, S. Pozdniakov, J. Price, S. Procureur, D. Protopopescu, B. Raue, G. Ricco, D. Rimal, M. Ripani, B. Ritchie, G. Rosner, P. Rossi, F. Sabatié, M. Saini, C. Salgado, D. Schott, R. Schumacher, E. Seder, H. Seraydaryan, Y. Sharabian, G. Smith, D. Sober, S. Stepanyan, S. Strauch, M. Taiuti, W. Tang, C. Taylor, D. Tedeschi, M. Ungaro, E. Voutier, D. Watts, L. Weinstein, D. Weygand, M. Wood, N. Zachariou, L. Zana, and B. Zhao. "Upper Limits for the Photoproduction Cross Section for the Φ−−(1860) Pentaquark State Off the Deuteron." Physical Review C 85, no. 1 (January 2012): 015205:1-9. doi:10.1103/PhysRevC.85.015205.