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A new approach to modelling elastic and inelastic photon-initiated production at the LHC: SuperChic 4

Harland-Lang, L.A.; Tasevsky, M.; Khoze, V.A.; Ryskin, M.G.

A new approach to modelling elastic and inelastic photon-initiated production at the LHC: SuperChic 4 Thumbnail


Authors

L.A. Harland-Lang

M. Tasevsky

M.G. Ryskin



Abstract

We present the results of the new SuperChic 4 Monte Carlo implementation of photon-initiated production in proton–proton collisions, considering as a first example the case of lepton pair production. This is based on the structure function calculation of the underlying process, and focusses on a complete account of the various contributing channels, including the case where a rapidity gap veto is imposed. We provide a careful treatment of the contributions where either (single dissociation), both (double dissociation) or neither (elastic) proton interacts inelastically and dissociates, and interface our results to Pythia for showering and hadronization. The particle decay distribution from dissociation system, as well the survival probability for no additional proton–proton interactions, are both fully accounted for; these are essential for comparing to data where a rapidity gap veto is applied. We present detailed results for the impact of the veto requirement on the differential cross section, compare to and find good agreement with ATLAS 7 TeV data on semi-exclusive production, and provide a new precise evaluation of the background from semi-exclusive lepton pair production to SUSY particle production in compressed mass scenarios, which is found to be low.

Citation

Harland-Lang, L., Tasevsky, M., Khoze, V., & Ryskin, M. (2020). A new approach to modelling elastic and inelastic photon-initiated production at the LHC: SuperChic 4. The European Physical Journal C, 80(10), Article 925. https://doi.org/10.1140/epjc/s10052-020-08455-0

Journal Article Type Article
Acceptance Date Sep 8, 2020
Online Publication Date Oct 7, 2020
Publication Date 2020-10
Deposit Date Oct 22, 2020
Publicly Available Date Oct 23, 2020
Journal European Physical Journal C: Particles and Fields
Print ISSN 1434-6044
Electronic ISSN 1434-6052
Publisher SpringerOpen
Peer Reviewed Peer Reviewed
Volume 80
Issue 10
Article Number 925
DOI https://doi.org/10.1140/epjc/s10052-020-08455-0
Public URL https://durham-repository.worktribe.com/output/1253004

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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/

Copyright Statement
This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.






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