Electroproduction of ɸ(1020) Mesons at 1.4 ≤ Q² ≤ 3.8 GeV² Measured With the CLAS Spectrometer

Authors

CLAS Collaboration
M. J. Amaryan, Old Dominion UniversityFollow
H. Bagdasaryan, Old Dominion University
M. Bektasoglu, Old Dominion University
S. Bültmann, Old Dominion UniversityFollow
S. L. Careccia, Old Dominion University
K. V. Dharmawardane, Old Dominion University
G. E. Dodge, Old Dominion UniversityFollow
G. Gavalian, Old Dominion University
C. E. Hyde-Wright, Old Dominion UniversityFollow
H. G. Jungst, Old Dominion University
N. Kalantarians, Old Dominion University
A. Klien, Old Dominion University
A. V. Klimenko, Old Dominion University
S. E. Kuhn, Old Dominion UniversityFollow
R. A. Niyazov, Old Dominion University
T. Tkachenko, Old Dominion University
L. B. Weinstein, Old Dominion UniversityFollow
J. Zhang, Old Dominion University

Document Type

Article

Publication Date

2008

DOI

10.1103/PhysRevC.78.025210

Publication Title

Physical Review C

Volume

78

Issue

2

Pages

025210

Abstract

Electroproduction of exclusive ϕ vector mesons has been studied with the CLAS detector in the kinematic range 1.4 ⩽ Q² ⩽ 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/(Q² +M²_ϕ)ⁿ was determined to be n = 2.49 ± 0.33. The slope of the four-momentum transfer t′ distribution is b_ϕ = 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.

Comments

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Original Publication Citation

CLAS Collaboration, Santoro, J. P., Smith, E. S., Garçon, M., Guidal, M., Laget, J. M., . . . Zhao, Z. W. (2008). Electroproduction of ɸ(1020) mesons at 1.4 ≤ Q² ≤ 3.8 GeV² measured with the CLAS spectrometer. Physical Review C, 78(2), 025210. doi:10.1103/PhysRevC.78.025210

ORCID

0000-0003-1582-2376 (Dodge), 0000-0001-7282-8120 (Hyde), 0000-0001-5416-2900 (Weinstien)

Repository Citation

CLAS Collaboration; Amaryan, M. J.; Bagdasaryan, H.; Bektasoglu, M.; Bültmann, S.; Careccia, S. L.; Dharmawardane, K. V.; Dodge, G. E.; Gavalian, G.; Hyde-Wright, C. E.; Jungst, H. G.; Kalantarians, N.; Klien, A.; Klimenko, A. V.; Kuhn, S. E.; Niyazov, R. A.; Tkachenko, T.; Weinstein, L. B.; and Zhang, J., "Electroproduction of ɸ(1020) Mesons at 1.4 ≤ Q² ≤ 3.8 GeV² Measured With the CLAS Spectrometer" (2008). Physics Faculty Publications. 374.
https://digitalcommons.odu.edu/physics_fac_pubs/374