Exclusive dimuon production in ultraperipheral Pb + Pb collisions at √s.sub.NN./sub.= 5.02 TeV with ATLAS

0552075 - FZÚ 2022 RIV US eng J - Journal Article
Aad, G. - Abbott, B. - Abbott, D.C. - Chudoba, Jiří - Hejbal, Jiří - Hladík, Ondřej - Jačka, Petr - Kepka, Oldřich - Kroll, Jiří - Kupčo, Alexander - Latoňová, Věra - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Penc, Ondřej - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek … Total 2953 authors
Exclusive dimuon production in ultraperipheral Pb + Pb collisions at √s_NN= 5.02 TeV with ATLAS.
Physical Review C. Roč. 104, č. 2 (2021), č. článku 024906. ISSN 2469-9985. E-ISSN 2469-9993
R&D Projects: GA MŠMT(CZ) LTT17018
Research Infrastructure: CERN-CZ II - 90104
Institutional support: RVO:68378271
Keywords : ATLAS * CERN * dimuon: production * cross section: measured
OECD category: Particles and field physics
Impact factor: 3.199, year: 2021
Method of publishing: Open access

Exclusive dimuon production in ultraperipheral collisions (UPC), resulting from photon-photon interactions in the strong electromagnetic fields of colliding high-energy lead nuclei, PbPb(γγ)→μ+μ−(Pb(⋆)Pb(⋆))mathrm{PbPb}(gammagamma) ightarrow mu^+mu^- (mathrm{Pb}^{(star)}mathrm{Pb}^{(star)} )PbPb(γγ)→μ+μ−(Pb(⋆)Pb(⋆)), is studied using Lint=0.48mathcal{L}_{mathrm{int}} = 0.48Lint​=0.48 nb−1^{-1}−1 of sNN=5.02sqrt{s_mathrm{NN}}=5.02sNN​ ​=5.02 TeV lead-lead collision data at the LHC with the ATLAS detector. Dimuon pairs are measured in the fiducial region pTμ>4p_{mathrm{T}mu} > 4pTμ​>4 GeV, ∣ημ∣<2.4|eta_{mu}| < 2.4∣ημ​∣<2.4, invariant mass mμμ>10m_{mumu} > 10mμμ​>10 GeV, and pT,μμ<2p_{mathrm{T,mumu}} < 2pT,μμ​<2 GeV. The primary background from single-dissociative processes is extracted from the data using a template fitting technique.
Permanent Link: http://hdl.handle.net/11104/0327236