Electroproduction of {phi}(1020) mesons at 1.4{<=}Q{sup 2}{<=}3.8 GeV{sup 2} measured with the CLAS spectrometer

Journal Article · Fri Aug 15 04:00:00 EDT 2008 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.78.025210· OSTI ID:21192145

Santoro, J P ^[1]; Smith, E S; Laget, J M; Weiss, C; Avakian, H; Burkert, V D; Carman, D S; Cords, D; Degtyarenko, P V; Deur, A; Elouadrhiri, L; Guo, L; Gyurjyan, V; Heddle, D; Ito, M M; Kubarovsky, V; Mecking, B A; Mestayer, M D; Niczyporuk, B B; Nozar, M ^[2]

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1. Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061-0435 (United States)
2. Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606 (United States)

Electroproduction of exclusive {phi} vector mesons has been studied with the CLAS detector in the kinematic range 1.4{<=}Q{sup 2}{<=}3.8 GeV{sup 2},0.0{<=}t{sup '}{<=}3.6 GeV{sup 2}, and 2.0{<=}W{<=}3.0 GeV. The scaling exponent for the total cross section as 1/(Q{sup 2}+M{sub {phi}}{sup 2}){sup n} was determined to be n=2.49{+-}0.33. The slope of the four-momentum transfer t{sup '} distribution is b{sub {phi}}=0.98{+-}0.17 GeV{sup -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.

• OSTI ID: 21192145
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 2 Vol. 78; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
DISTRIBUTION
ELECTROPRODUCTION
FOUR MOMENTUM TRANSFER
GEV RANGE
GLUONS
HELICITY
PERIPHERAL MODELS
PHI-1020 MESONS
S CHANNEL
SCALING
SPECTROMETERS
TOTAL CROSS SECTIONS