Physical Review D
052009 (17 pages)
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 Publication Citation
Lombardo, S., Battaglieri, M., Celentano, A., D'Angelo, A., De Vita, R., Filippi, A., . . . Collaboration, C. (2018). Photoproduction of K+ K- meson pairs on the proton. Physical Review D, 98(5), 052009. doi:10.1103/PhysRevD.98.052009
Lombardo, S.; Battaglieri, M.; Celentano, A.; D'Angelo, A.; De Vita, R.; Filippi, A.; Glazier, D. I.; Khachatryan, M.; Klein, A.; Prok, Y.; and The CLAS Collaboration, "Photoproduction of K+ K- Meson Pairs on the Proton" (2018). Physics Faculty Publications. 251.