Measurement of azimuthal anisotropy of muons from charm and bottom hadrons in pp collisions at √s = 13 TeV with the ATLAS detector

0534999 - FZÚ 2021 RIV US eng J - Journal Article
Aad, G. - Abbott, B. - Abbott, D.C. - Chudoba, Jiří - Hejbal, Jiří - Hladík, Ondřej - Jačka, Petr - Jakoubek, Tomáš - Kepka, Oldřich - Kroll, Jiří - Kupčo, Alexander - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Penc, Ondřej - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek … Total 2929 authors
Measurement of azimuthal anisotropy of muons from charm and bottom hadrons in pp collisions at √s = 13 TeV with the ATLAS detector.
Physical Review Letters. Roč. 124, č. 8 (2020), s. 1-20, č. článku 082301. ISSN 0031-9007. E-ISSN 1079-7114
R&D Projects: GA MŠMT(CZ) LTT17018
Research Infrastructure: CERN-CZ II - 90104
Institutional support: RVO:68378271
Keywords : ATLAS * CERN * LHC * Nuclear Physics * transverse momentum
OECD category: Particles and field physics
Impact factor: 9.161, year: 2020
Method of publishing: Open access

The elliptic flow of muons from the decay of charm and bottom hadrons is measured in pp collisions at 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 v2 is observed for muons from charm decays, while the v2 value for muons from bottom decays is consistent with zero within uncertainties.
Permanent Link: http://hdl.handle.net/11104/0313122