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Two-particle Bose–Einstein correlations in pp collisions at s√=13s=13 TeV measured with the ATLAS detector at the LHC
Stockholm University, Faculty of Science, Department of Physics. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC).ORCID iD: 0000-0001-7489-9184
Stockholm University, Faculty of Science, Department of Physics. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC).ORCID iD: 0000-0002-3380-8167
Stockholm University, Faculty of Science, Department of Physics.
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Number of Authors: 29202022 (English)In: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 82, no 7, article id 608Article in journal (Refereed) Published
Abstract [en]

This paper presents studies of Bose–Einstein correlations (BEC) in proton–proton collisions at a centre-of-mass energy of 13 TeV, using data from the ATLAS detector at the CERN Large Hadron Collider. Data were collected in a special low-luminosity configuration with a minimum-bias trigger and a high-multiplicity track trigger, accumulating integrated luminosities of 151 μμb−1 and 8.4 nb−1, respectively. The BEC are measured for pairs of like-sign charged particles, each with |η|<2.5|η|<2.5, for two kinematic ranges: the first with particle pT>100 MeV and the second with particle pT>500 MeV. The BEC parameters, characterizing the source radius and particle correlation strength, are investigated as functions of charged-particle multiplicity (up to 300) and average transverse momentum of the pair (up to 1.5 GeV). The double-differential dependence on charged-particle multiplicity and average transverse momentum of the pair is also studied. The BEC radius is found to be independent of the charged-particle multiplicity for high charged-particle multiplicity (above 100), confirming a previous observation at lower energy. This saturation occurs independent of the transverse momentum of the pair.

Place, publisher, year, edition, pages
2022. Vol. 82, no 7, article id 608
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Subatomic Physics
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URN: urn:nbn:se:su:diva-208367DOI: 10.1140/epjc/s10052-022-10472-0ISI: 000824937700002Scopus ID: 2-s2.0-85130224537OAI: oai:DiVA.org:su-208367DiVA, id: diva2:1691930
Available from: 2022-08-31 Created: 2022-08-31 Last updated: 2022-08-31Bibliographically approved

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Backman, FilipBarranco Navarro, LauraBohm, ChristianCarney, Rebecca M. D.Clément, ChristopheHellman, StenKastanas, Konstatinos A.Milstead, David A.Moa, TorbjörnPasuwan, PatrawanShaikh, Nabila W.Silverstein, Samuel B.Sjölin, JörgenStrandberg, SaraUghetto, MichaëlValdés Santurio, EduardoWallängen, Veronica

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Backman, FilipBarranco Navarro, LauraBohm, ChristianCarney, Rebecca M. D.Clément, ChristopheHellman, StenKastanas, Konstatinos A.Milstead, David A.Moa, TorbjörnPasuwan, PatrawanShaikh, Nabila W.Silverstein, Samuel B.Sjölin, JörgenStrandberg, SaraUghetto, MichaëlValdés Santurio, EduardoWallängen, Veronica
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Department of PhysicsThe Oskar Klein Centre for Cosmo Particle Physics (OKC)
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European Physical Journal C
Subatomic Physics

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