Report/Journal Article

GSI-2019-00694

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Prompt photon production and photon-jet correlations at the LHCi

Klasen, M. ; Klein-Bösing, C.GSI* ; Poppenborg, H.

2018
SISSA [Trieste]

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Please use a persistent id in citations: doi:10.1007/JHEP03(2018)081  doi:10.15120/GSI-2019-00694

Report No.: MS-TP-17-09; arXiv:1709.04154

Abstract: Next-to-leading order predictions matched to parton showers are compared with recent ATLAS data on isolated photon production and CMS data on associated photon and jet production in pp and pPb collisions at different centre-of-mass energies of the LHC. We find good agreement and, as expected, considerably reduced scale uncertainties compared to previous theoretical calculations. Predictions are made for the ratio of inclusive photons over decay photons R$_{γ}$ , an important quantity to evaluate the significance of additional photon sources, e.g. thermal radiation from a Quark-Gluon-Plasma, and for distributions in the parton momentum fraction in lead ions x$_{Pb}^{obs}$ , that could be determined by ALICE, ATLAS, CMS and LHCb in ongoing analyses of photon+jet production in pPb collisions at $ \sqrt{s_{N\ N}} = 5.02 $ TeV. These data should have an important impact on the determination of nuclear effects such as shadowing at low x.

Keyword(s): photon: direct production ; jet: associated production ; photon: jet ; radiation: thermal ; parton: showers ; lead: ion ; quark gluon: plasma ; quantum chromodynamics: perturbation theory ; higher-order: 1 ; CERN LHC Coll ; ATLAS ; CMS ; correlation ; nucleus: shadowing ; ALICE ; LHC-B ; p p: scattering ; p nucleus: scattering

Note: 20 pages, 13 figures; This article is published under an open access license; JHEP is an open-access journal funded by SCOAP3 and licensed under CC BY 4.0

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Contributing Institute(s):

1. ExtreMe Matter Institute (EMMI) (EXM)

Research Program(s):

1. 612 - Cosmic Matter in the Laboratory (POF3-612) (POF3-612)
2. OAGSI - Open Access Publikation mit Unterstützung des GSI Helmholtzzentrums für Schwerionenforschung (OAGSI) (OAGSI)

Appears in the scientific report 2018

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Database coverage:
; ; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; Ebsco Academic Search ; IF >= 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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