Photoproduction of K+K- meson pairs on the proton

S. Lombardo, M. Battaglieri, A. Celentano, A. D'Angelo, R. De Vita, A. Filippi, D. I. Glazier, S. M. Hughes, V. Mathieu, A. Rizzo, E. Santopinto, I. Stankovic, A. P. Szczepaniak, D. Watts, L. Zana, S. Adhikari, Z. Akbar, H. Avakian, J. Ball, N. A. BaltzellL. Barion, M. Bashkanov, V. Batourine, I. Bedlinskiy, A. S. Biselli, S. Boiarinov, W. J. Briscoe, V. D. Burkert, F. Cao, D. S. Carman, P. Chatagnon, T. Chetry, G. Ciullo, L. Clark, B. A. Clary, P. L. Cole, M. Contalbrigo, V. Crede, N. Dashyan, E. De Sanctis, M. Defurne, A. Deur, S. Diehl, C. Djalali, Michael Dugger, R. Dupre, H. Egiyan, M. Ehrhart, A. El Alaoui, L. El Fassi, P. Eugenio, G. Fedotov, G. Gavalian, Y. Ghandilyan, G. P. Gilfoyle, K. L. Giovanetti, F. X. Girod, E. Golovatch, R. W. Gothe, K. A. Griffioen, M. Guidal, L. Guo, K. Hafidi, H. Hakobyan, N. Harrison, M. Hattawy, D. Heddle, K. Hicks, M. Holtrop, Y. Ilieva, D. G. Ireland, B. S. Ishkhanov, E. L. Isupov, D. Jenkins, H. S. Jo, S. Johnston, K. Joo, M. L. Kabir, D. Keller, G. Khachatryan, M. Khachatryan, M. Khandaker, A. Kim, W. Kim, A. Klein, F. J. Klein, V. Kubarovsky, L. Lanza, P. Lenisa, K. Livingston, I. J.D. Macgregor, D. Marchand, N. Markov, B. McKinnon, M. D. Mestayer, C. A. Meyer, Z. E. Meziani, M. Mirazita, V. Mokeev, R. A. Montgomery, C. Munoz Camacho, P. Nadel-Turonski, S. Niccolai, G. Niculescu, M. Osipenko, A. I. Ostrovidov, M. Paolone, R. Paremuzyan, K. Park, E. Pasyuk, O. Pogorelko, J. W. Price, Y. Prok, D. Protopopescu, M. Ripani, D. Riser, Barry Ritchie, G. Rosner, F. Sabatié, C. Salgado, R. A. Schumacher, Y. G. Sharabian, Iu Skorodumina, G. D. Smith, D. I. Sober, D. Sokhan, N. Sparveris, I. I. Strakovsky, S. Strauch, M. Taiuti, J. A. Tan, M. Ungaro, H. Voskanyan, E. Voutier, R. Wang, X. Wei, M. H. Wood, N. Zachariou, J. Zhang, Z. W. Zhao

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Abstract

The exclusive reaction γp→pK+K- was studied in the photon energy range 3.0-3.8 GeV and momentum transfer range 0.6<-t<1.3 GeV2. Data were collected with the CLAS detector at the Thomas Jefferson National Accelerator Facility. In this kinematic range the integrated luminosity was approximately 20 pb-1. The reaction was isolated by detecting the K+ and the proton in CLAS, and reconstructing the K- via the missing-mass technique. Moments of the dikaon decay angular distributions were extracted from the experimental data. Besides the dominant contribution of the φ meson in the P wave, evidence for S-P interference was found. The differential production cross sections dσ/dt for individual waves in the mass range of the φ resonance were extracted and compared to predictions of a Regge-inspired model. This is the first time the t-dependent cross section of the S-wave contribution to the elastic K+K- photoproduction has been measured.

Original languageEnglish (US)
Article number052009
JournalPhysical Review D
Volume98
Issue number5
DOIs
StatePublished - Sep 27 2018

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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    Lombardo, S., Battaglieri, M., Celentano, A., D'Angelo, A., De Vita, R., Filippi, A., Glazier, D. I., Hughes, S. M., Mathieu, V., Rizzo, A., Santopinto, E., Stankovic, I., Szczepaniak, A. P., Watts, D., Zana, L., Adhikari, S., Akbar, Z., Avakian, H., Ball, J., ... Zhao, Z. W. (2018). Photoproduction of K+K- meson pairs on the proton. Physical Review D, 98(5), [052009]. https://doi.org/10.1103/PhysRevD.98.052009