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arXiv · 1709.09044

Quarkonium-photoproduction prospects at a fixed-target experiment at the LHC (AFTER@LHC)

L. Massacrier·J. P. Lansberg·L. Szymanowski·J. Wagner
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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.

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L. Massacrier, J. P. Lansberg, L. Szymanowski, J. Wagner. 2017-09-26. Quarkonium-photoproduction prospects at a fixed-target experiment at the LHC (AFTER@LHC). https://arxiv.org/abs/1709.09044

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