期刊
PHYSICAL REVIEW C
卷 99, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.99.015203
关键词
-
资金
- U.S. Department of Energy [DE-AC-76SF00098]
Coherent exclusive vector meson electroproduction is a key physics channel at an electron-ion collider. It probes the gluon structure of nuclei over a wide range of Q(2), and can be used to measure nuclear shadowing and to search for gluon saturation and/or the colored glass condensate. In this paper, we present calculations of the kinematic distributions for a variety of exclusive vector meson final states: the rho, phi, J/psi, psi', and the (sic) states. The cross sections for light and c (c) over bar mesons are large, while (sic) states should be produced in moderate numbers at a medium energy electron-ion collider (EIC)-i.e., one corresponding to the proposed U.S. designs-and in large numbers at the CERN Large Hadron Electron Collider (LHeC). We investigate the acceptances for these states, as a function of detector rapidity coverage. A large-acceptance detector is needed to cover the full range photon-nucleon collision energies produced at an EIC; a forward detector is required to observe vector mesons from the most energetic photon interactions, and thereby probe gluons at the lowest possible Bjorken-x values.
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