Exclusive LHC physics with heavy ions: SuperChic 3
Harland-Lang, L.A.; Khoze, V.A.; Ryskin, M.G.
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.
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|
|Peer Reviewed||Peer Reviewed|
Published Journal Article
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© The Author(s) 2019. <br /> 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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