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arXiv · 2205.03861

UPC contribution to forward rapidity gap distribution in pPb collisions at the LHC

V. Guzey·M. Strikman·M. Zhalov
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Abstract

In this Letter, we consider strong and electromagnetic (ultraperipheral) mechanisms in proton-nucleus coherent diffraction at the CERN Large Hadron Collider. We explicitly demonstrate the dominance of the latter and explain the CMS data on the forward rapidity gap distribution in $pPb$ collisions at $\sqrt{s_{NN}}=8.16$ TeV. In particular, we provide simple estimates, which give a good, semi-quantitative description of both magnitude and shape of the $\Delta \eta^F$ distribution in the Pomeron-proton topology. We also make predictions for the proton-oxygen run.

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V. Guzey, M. Strikman, M. Zhalov. 2022-05-08. UPC contribution to forward rapidity gap distribution in pPb collisions at the LHC. https://arxiv.org/abs/2205.03861

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