Two-particle Bose–Einstein correlations in pp collisions at √s=13  TeV measured with the ATLAS detector at the LHC

Anders, J. K.; Beck, H. P.; Ereditato, A.; Franconi, L.; Haug, S.; Merlassino, C.; Miucci, A.; Weber, M. S.; Weston, T. D. (2022). Two-particle Bose–Einstein correlations in pp collisions at √s=13  TeV measured with the ATLAS detector at the LHC. The European physical journal. C, Particles and fields, 82(7) Springer 10.1140/epjc/s10052-022-10472-0

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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 μb−1 and 8.4 nb−1, respectively. The BEC are measured for pairs of like-sign charged particles, each with |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.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP)
10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)

UniBE Contributor:

Anders, John Kenneth, Beck, Hans Peter, Ereditato, Antonio, Franconi, Laura, Haug, Sigve, Merlassino, Claudia, Miucci, Antonio, Weber, Michele, Weston, Thomas Daniel

Subjects:

500 Science > 530 Physics

ISSN:

1434-6044

Publisher:

Springer

Language:

English

Submitter:

BORIS Import LHEP

Date Deposited:

05 Apr 2023 16:25

Last Modified:

13 Apr 2023 14:36

Publisher DOI:

10.1140/epjc/s10052-022-10472-0

Additional Information:

Kollaboration - Es sind nur die Berner Autor*innen namentlich erwaehnt; ATLAS collaboration

BORIS DOI:

10.48350/181421

URI:

https://boris.unibe.ch/id/eprint/181421

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