Journal
PHYSICAL REVIEW C
Volume 78, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.78.025210
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Funding
- U.S. Department of Energy
- National Science Foundation
- Italian Istituto Nazionale di Fisica Nucleare
- French Centre National de la Recherche Scientifique
- French Commissariat a I'Energie Atomique
- Korean Science and Engineering Foundation
- Southeastern Universities Research Association (SURA) [DE-AC05-84ER40150]
- Science and Technology Facilities Council [ST/F500572/1] Funding Source: researchfish
- STFC [ST/F500572/1] Funding Source: UKRI
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Electroproduction of exclusive phi vector mesons has been studied with the CLAS detector in the kinematic range 1.4 <= Q(2) <= 3.8 GeV2, 0.0 <= t' <= 3.6 GeV2, and 2.0 <= W <= 3.0 GeV. The scaling exponent for the total cross section as 1/(Q(2) + M-phi(2))(n) was determined to be n = 2.49 +/- 0.33. The slope of the four-momentum transfer t' distribution is b(phi) = 0.98 +/- 0.17 GeV-2. Under the assumption of s-channel helicity conservation, we determine the ratio of longitudinal to transverse cross sections to be R = 0.86 +/- 0.24. A two-gluon exchange model is able to reproduce the main features of the data.
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