Measurement of azimuthal anisotropy of muons from charm and bottom hadrons in pp collisions at sqrt[s]=13 TeV with the ATLAS Detector

Journal article

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.

Authors: Aad, G; Abbott, B; Abbott, DC; Abed Abud, A; Abeling, K

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: American Physical Society
• Journal: Physical Review Letters
• Volume: 124
• Issue: 8
• Article number: 82301
• Publication date: 2020-02-26
• Acceptance date: 2020-01-22
• DOI: 10.1103/physrevlett.124.082301
• EISSN: 1079-7114
• ISSN: 0031-9007
• Pmid: 32167369
• Language: English
• Keywords: FFR; ATLAS Collaboration