Speaker
Eugene Chudakov
(Jefferson Lab)
Description
We will present preliminary results for the J/psi close-to-threshold
photoproduction obtained in the GlueX experiment at Jefferson Lab.
Close-to-threshold photoproduction gamma+p-->J/psi+p probes small-size
gluon configuration in the proton. This reaction may also contain a
contribution from the s-channel production of the LHCb pentaquark
P(4.4)-->J/psi+p at beam energies of about 10 GeV. Measuring the
size of the contribution allows to evaluate, or put a limit
on the branching ratio of the decay P-->J/psi+p.
The GlueX experiment is in the process of collecting data. The
main research topic is the spectroscopy of light mesons produced by a
linearly polarized photon beam with the end point of 12 GeV.
Primary author
Eugene Chudakov
(Jefferson Lab)
