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Measurement of azimuthal anisotropy of muons from charm and bottom hadrons in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector

The ATLAS collaboration
Phys.Rev.Lett. 124 (2020) 082301, 2020.

Abstract (data abstract)
CERN-LHC. The elliptic flow of muons from the decay of charm and bottom hadrons is measured in pp collisions at 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 < pT < 7 GeV and pseudorapidity range |η|<2.4. A significant non-zero 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.

  • Table 1

    Data from Figure 3a

    10.17182/hepdata.95128.v1/t1

    Summary of results for inclusive muon v2 as a function of multiplicity. Uncertainties are statistical and systematic, respectively.

  • Table 2

    Data from Figure 3b

    10.17182/hepdata.95128.v1/t2

    Summary of results for inclusive muon v2 as a function of pT. Uncertainties are statistical and systematic, respectively.

  • Table 3

    Data from Figure 4a

    10.17182/hepdata.95128.v1/t3

    Summary of results for charm and bottom muon v2 as a function of multiplicity. Uncertainties are statistical and systematic, respectively.

  • Table 4

    Data from Figure 4b

    10.17182/hepdata.95128.v1/t4

    Summary of results for charm and bottom muon v2 as a function of pT. Uncertainties are statistical and systematic, respectively.

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