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Title: Photoproduction of K + K meson pairs on the proton

Journal Article · · Physical Review. D.
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The exclusive reaction p → 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 di-kaon 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.

Research Organization:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); The George Washington Univ., Ashburn, VA (United States); Mississippi State Univ., Mississippi State, MS (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP); Chilean Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT); National Science Foundation (NSF); Scottish Universities Physics Alliance (SUPA); National Research Foundation of Korea (NRF); USDOE Office of Science - Office of Nuclear Physics
Contributing Organization:
The CLAS Collaboration
Grant/Contract Number:
AC05-06OR23177; AC05-84ER40150; SC0016583; FG02-07ER41528; AC02-06CH11357
OSTI ID:
1474194
Alternate ID(s):
OSTI ID: 1475017; OSTI ID: 1478668; OSTI ID: 1490172
Report Number(s):
JLAB-PHY-18-2821; DOE/OR/23177-4555; arXiv:1808.01918; PRVDAQ; 052009
Journal Information:
Physical Review. D., Journal Name: Physical Review. D. Vol. 98 Journal Issue: 5; ISSN 2470-0010
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 4 works
Citation information provided by
Web of Science

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Figures / Tables (20)