Quarkonium-photoproduction prospects at a fixed-target experiment at the LHC (AFTER@LHC)
arXiv:1709.09044
Abstract
We report on the potentialities offered by a fixed-target experiment at the LHC using the proton and ion LHC beams (AFTER@LHC project) regarding the study of J/psi exclusive-photoproduction in pA and AA collisions. The foreseen usage of polarised targets (hydrogen, deuteron, helium) gives access to measurements of the Single-Transverse-Spin Asymmetries of this exclusive process, therefore allowing one to access the helicity-flip Generalised Parton Distribution (GPD) Eg. We detail the expected yields of photoproduced J/psi in proton-hydrogen and lead-hydrogen collisions and discuss the statistical uncertainties on the asymmetry measurement for one year of data taking at the LHC.
proceeding of PHOTON 2017, Internation Conference on the Structure and the Interactions of the Photon, international workshop on Photon-Photon collisions, international workshop on high energy photon colliders
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