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Exclusive LHC physics with heavy ions: SuperChic 3

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

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Authors

L.A. Harland-Lang

V.A. Khoze

M.G. Ryskin



Abstract

We present results of the updated SuperChic 3 Monte Carlo event generator for central exclusive production. This extends the previous treatment of proton–proton collisions to include heavy ion (pA and AA) beams, for both photon and QCD-initiated production, the first time such a unified treatment of exclusive processes has been presented in a single generator. To achieve this we have developed a theory of the gap survival factor in heavy ion collisions, which allows us to derive some straightforward results about the A scaling of the corresponding cross sections. We compare against the recent ATLAS and CMS measurements of light-by-light scattering at the LHC, in lead-lead collisions. We find that the background from QCD-initiated production is expected to be very small, in contrast to some earlier estimates. We also present results from new photon-initiated processes that can now be generated, namely the production of axion-like particles, monopole pairs and monopolium, top quark pair production, and the inclusion of W loops in light-by-light scattering.

Citation

Harland-Lang, L., Khoze, V., & Ryskin, M. (2019). Exclusive LHC physics with heavy ions: SuperChic 3. The European Physical Journal C, 79(1), Article 39. https://doi.org/10.1140/epjc/s10052-018-6530-5

Journal Article Type Article
Acceptance Date Dec 20, 2018
Online Publication Date Jan 18, 2019
Publication Date Jan 18, 2019
Deposit Date Jan 22, 2019
Publicly Available Date Jan 22, 2019
Journal European Physical Journal C: Particles and Fields
Print ISSN 1434-6044
Electronic ISSN 1434-6052
Publisher SpringerOpen
Peer Reviewed Peer Reviewed
Volume 79
Issue 1
Article Number 39
DOI https://doi.org/10.1140/epjc/s10052-018-6530-5

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

Copyright Statement
© The Author(s) 2019.
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.





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