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First measurement of the forward rapidity gap distribution in pPb collisions at 8 TeV

by Dmitry E. Sosnov

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Submission summary

Authors (as registered SciPost users): Dmitry Sosnov
Submission information
Preprint Link: scipost_202107_00099v2  (pdf)
Date accepted: 2022-03-04
Date submitted: 2022-02-28 21:38
Submitted by: Sosnov, Dmitry
Submitted to: SciPost Physics Proceedings
Proceedings issue: 28th Annual Workshop on Deep-Inelastic Scattering (DIS) and Related Subjects (DIS2021)
Ontological classification
Academic field: Physics
Specialties:
  • High-Energy Physics - Experiment

Abstract

We present the forward rapidity gap spectra from proton-lead collisions for both I\!P-Pb and I\!P-p topologies measured at the CMS at a center-of-mass energy of 8.16 TeV. For the I\!P-Pb topology, the cross-section predicted by EPOS-LHC is a factor of two lower than the data while has reasonable description of the spectrum shape. For the I\!P-p topology, the EPOS-LHC, QGSJET~II and HIJING predictions are significantly lower than the data, what can be explained by a contribution of ultra-peripheral photoproduction events. The obtained data may be of significant input for understanding the high energy limit of QCD and modeling cosmic ray air showers.

Published as SciPost Phys. Proc. 8, 065 (2022)

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