Measurement of Azimuthal Anisotropy of Muons from Charm and Bottom Hadrons in <i>pp</i> Collisions at √<i>s</i>=13 TeV with the ATLAS Detector



Aad, G, Abbott, B, Abbott, DC, Abud, A, Abeling, K, Abhayasinghe, DK, Abidi, SH, AbouZeid, OS, Abraham, NL, Abramowicz, H
et al (show 2945 more authors) (2020) Measurement of Azimuthal Anisotropy of Muons from Charm and Bottom Hadrons in <i>pp</i> Collisions at √<i>s</i>=13 TeV with the ATLAS Detector. PHYSICAL REVIEW LETTERS, 124 (8). 082301-.

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Abstract

The elliptic flow of muons from the decay of charm and bottom hadrons is measured in pp collisions at sqrt[s]=13  TeV using a data sample with an integrated luminosity of 150  pb^{-1} recorded by the ATLAS detector at the LHC. The muons from heavy-flavor decay are separated from light-hadron decay muons using momentum imbalance between the tracking and muon spectrometers. The heavy-flavor decay muons are further separated into those from charm decay and those from bottom decay using the distance-of-closest-approach to the collision vertex. The measurement is performed for muons in the transverse momentum range 4-7 GeV and pseudorapidity range |η|<2.4. A significant nonzero elliptic anisotropy coefficient v_{2} is observed for muons from charm decays, while the v_{2} value for muons from bottom decays is consistent with zero within uncertainties.

Item Type: Article
Additional Information: 27 pages in total, author list starting page 11, 4 figures, published in Phys. Rev. Lett. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HION-2018-23
Uncontrolled Keywords: ATLAS Collaboration
Depositing User: Symplectic Admin
Date Deposited: 06 Apr 2020 10:28
Last Modified: 11 Oct 2023 18:39
DOI: 10.1103/PhysRevLett.124.082301
Open Access URL: https://journals.aps.org/prl/abstract/10.1103/Phys...
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3082095