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. Baltzell
  • L. 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, M. 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, B. G. 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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7 Scopus citations

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
Article number052009
JournalPhysical Review D
Volume98
Issue number5
DOIs
StatePublished - 27 Sep 2018

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