Affiliation:
1. Lawrence Berkeley National Laboratory
Abstract
Vector meson photoproduction offers the opportunity to image target
nuclei. The two-dimensional Fourier transform
d\sigma_{coherent}/dtdσcoherent/dt
of coherent vector meson photoproduction gives the two-dimensional
distribution of interaction sites in the target. Since vector meson
photoproduction occurs, at lowest order, via two-gluon exchange, this is
sensitive to gluon shadowing. We present an analysis of
\pi^+\pi^-π+π−
photoproduction using data from the STAR detector and a study of
d\sigma_{coherent}/dtdσcoherent/dt,
with an emphasis on probing the nuclear shape and its systematic
uncertainties.
Funder
United States Department of Energy
Cited by
1 articles.
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