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Title: Near-threshold photoproduction of Φ mesons from deuterium

In this report, we measure the differential cross section on $$\phi$$-meson photoproduction from deuterium near the production threshold for a proton using the CLAS detector and a tagged-photon beam in Hall B at Jefferson Lab. The measurement was carried out by a triple coincidence detection of a proton, $K^+$ and $K^-$ near the theoretical production threshold of 1.57 GeV. Moreover, the extracted differential cross sections $$\frac{d\sigma}{dt}$$ for the initial photon energy from 1.65-1.75 GeV are consistent with predictions based on a quasifree mechanism. Ultimately, this experiment establishes a baseline for a future experimental search for an exotic $$\phi$$-N bound state from heavier nuclear targets utilizing subthreshold/near-threshold production of $$\phi$$ mesons.
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Publication Date:
OSTI Identifier:
1004113
Report Number(s):
JLAB-PHY--10-1235; DOE/OR/23177--1427; arXiv:1011.1305
Journal ID: ISSN 0370-2693; TRN: US1100583
Grant/Contract Number:
AC05-06OR23177
Type:
Accepted Manuscript
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 696; Journal Issue: 4; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Contributing Orgs:
CLAS Collaboration
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BOUND STATE; DETECTION; DEUTERIUM; DIFFERENTIAL CROSS SECTIONS; MESONS; PHOTONS; PHOTOPRODUCTION; PRODUCTION; PROTONS; TARGETS near threshold; deuteron; phi meson photoproduction; quasi free