Exclusive LHC physics with heavy ions: SuperChic 3
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...
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| Format: | Journal article |
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Springer
2019
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| _version_ | 1797084537498370048 |
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| author | Harland-Lang, LA Khoze, VA Ryskin, MG |
| author_facet | Harland-Lang, LA Khoze, VA Ryskin, MG |
| author_sort | Harland-Lang, LA |
| collection | OXFORD |
| description | 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. |
| first_indexed | 2024-03-07T01:56:30Z |
| format | Journal article |
| id | oxford-uuid:9be217cc-308c-42db-bb0a-fb9ea3eae65a |
| institution | University of Oxford |
| last_indexed | 2024-03-07T01:56:30Z |
| publishDate | 2019 |
| publisher | Springer |
| record_format | dspace |
| spelling | oxford-uuid:9be217cc-308c-42db-bb0a-fb9ea3eae65a2022-03-27T00:32:06ZExclusive LHC physics with heavy ions: SuperChic 3Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:9be217cc-308c-42db-bb0a-fb9ea3eae65aSymplectic Elements at OxfordSpringer2019Harland-Lang, LAKhoze, VARyskin, MGWe 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. |
| spellingShingle | Harland-Lang, LA Khoze, VA Ryskin, MG Exclusive LHC physics with heavy ions: SuperChic 3 |
| title | Exclusive LHC physics with heavy ions: SuperChic 3 |
| title_full | Exclusive LHC physics with heavy ions: SuperChic 3 |
| title_fullStr | Exclusive LHC physics with heavy ions: SuperChic 3 |
| title_full_unstemmed | Exclusive LHC physics with heavy ions: SuperChic 3 |
| title_short | Exclusive LHC physics with heavy ions: SuperChic 3 |
| title_sort | exclusive lhc physics with heavy ions superchic 3 |
| work_keys_str_mv | AT harlandlangla exclusivelhcphysicswithheavyionssuperchic3 AT khozeva exclusivelhcphysicswithheavyionssuperchic3 AT ryskinmg exclusivelhcphysicswithheavyionssuperchic3 |