Elliptic Flow of Muons from Heavy-Flavour Hadron Decays at Forward Rapidity in Pb–Pb Collisions at √sNN = 2.76 TeV
Name
1-s2.0-S0370269315009156-main.pdf
Size
983.55 KB
Format
Adobe PDF
Checksum (MD5)
fac8b8cfd4b374d9b4b2ef5a6d2d1af0
Date Issued
December 2015
Journal
Physics Letters B
Publisher
Elsevier
Citation
Adam, J. et al. “Elliptic Flow of Muons from Heavy-Flavour Hadron Decays at Forward Rapidity in Pb–Pb Collisions at √sNN = 2.76 TeV.” Physics Letters B 753 (February 2016): 41–56 © 2015 CERN for the benefit of the ALICE Collaboration
Version
Final published version
Abstract
The elliptic flow, v₂, of muons from heavy-flavour hadron decays at forward rapidity (2.5 < y < 4) is measured in Pb–Pb collisions at √sNN = 2.76 TeV with the ALICE detector at the LHC. The scalar product, two- and four-particle Q cumulants and Lee–Yang zeros methods are used. The dependence of the v₂ of muons from heavy-flavour hadron decays on the collision centrality, in the range 0–40%, and on transverse momentum, p[subscript T], is studied in the interval 3 < p[subscript T] < 10GeV/c. A positive is observed with the scalar product and two-particle Q cumulants in semi-central collisions (10–20% and 20–40% centrality classes) for the p[subscript T] interval from 3 to about 5 GeV/c with a significance larger than 3σ, based on the combination of statistical and systematic uncertainties. The v₂ magnitude tends to decrease towards more central collisions and with increasing p[subscript T]. It becomes compatible with zero in the interval 6 < p[subscript T] < 10GeV/c. The results are compared to models describing the interaction of heavy quarks and open heavy-flavour hadrons with the high-density medium formed in high-energy heavy-ion collisions. Keywords: LHC; ALICE experiment; Pb–Pb collisions; Heavy-flavour decay muons; Elliptic flow
MIT Department
MIT Kavli Institute for Astrophysics and Space Research
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution 4.0 International License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1016/J.PHYSLETB.2015.11.059
