The elliptic flow, ext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269315009156&_mathId=si2.gif&_user=111111111&_pii=S0370269315009156&_rdoc=1&_issn=03702693&md5=af612936c94892de2098a0b323cdcab5" title="Click to view the MathML source">v2er hidden">e">, of muons from heavy-flavour hadron decays at forward rapidity (ext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269315009156&_mathId=si29.gif&_user=111111111&_pii=S0370269315009156&_rdoc=1&_issn=03702693&md5=048e84b72baecda5d0c5816e647b7d4d" title="Click to view the MathML source">2.5<y<4er hidden">e">) is measured in Pb–Pb collisions at e="View the MathML source" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269315009156&_mathId=si1.gif&_user=111111111&_pii=S0370269315009156&_rdoc=1&_issn=03702693&md5=8065ea62e2341e638520e7e3f068a74f">eImage" height="15" width="105" alt="View the MathML source" style="margin-top: -5px; vertical-align: middle" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0370269315009156-si1.gif">er hidden">e"> with the ALICE detector at the LHC. The scalar product, two- and four-particle <em>Q em> cumulants and Lee–Yang zeros methods are used. The dependence of the ext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269315009156&_mathId=si2.gif&_user=111111111&_pii=S0370269315009156&_rdoc=1&_issn=03702693&md5=af612936c94892de2098a0b323cdcab5" title="Click to view the MathML source">v2er hidden">e"> of muons from heavy-flavour hadron decays on the collision centrality, in the range 0–40%, and on transverse momentum, ext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269315009156&_mathId=si4.gif&_user=111111111&_pii=S0370269315009156&_rdoc=1&_issn=03702693&md5=ab56179a7d37d31ca4d53305b3fadf95" title="Click to view the MathML source">pTer hidden">e">, is studied in the interval ext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269315009156&_mathId=si30.gif&_user=111111111&_pii=S0370269315009156&_rdoc=1&_issn=03702693&md5=cce0b681be6752b5db65f41f44926e99" title="Click to view the MathML source">3<pT<10 GeV/cer hidden">e">. A positive ext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269315009156&_mathId=si2.gif&_user=111111111&_pii=S0370269315009156&_rdoc=1&_issn=03702693&md5=af612936c94892de2098a0b323cdcab5" title="Click to view the MathML source">v2er hidden">e"> is observed with the scalar product and two-particle <em>Q em> cumulants in semi-central collisions (10–20% and 20–40% centrality classes) for the ext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269315009156&_mathId=si4.gif&_user=111111111&_pii=S0370269315009156&_rdoc=1&_issn=03702693&md5=ab56179a7d37d31ca4d53305b3fadf95" title="Click to view the MathML source">pTer hidden">e"> interval from 3 to about ext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269315009156&_mathId=si6.gif&_user=111111111&_pii=S0370269315009156&_rdoc=1&_issn=03702693&md5=fd2ebd478896cb30c84948fcd44ee05f" title="Click to view the MathML source">5 GeV/cer hidden">e"> with a significance larger than 3<em>σ em>, based on the combination of statistical and systematic uncertainties. The ext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269315009156&_mathId=si2.gif&_user=111111111&_pii=S0370269315009156&_rdoc=1&_issn=03702693&md5=af612936c94892de2098a0b323cdcab5" title="Click to view the MathML source">v2er hidden">e"> magnitude tends to decrease towards more central collisions and with increasing ext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269315009156&_mathId=si4.gif&_user=111111111&_pii=S0370269315009156&_rdoc=1&_issn=03702693&md5=ab56179a7d37d31ca4d53305b3fadf95" title="Click to view the MathML source">pTer hidden">e">. It becomes compatible with zero in the interval ext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269315009156&_mathId=si7.gif&_user=111111111&_pii=S0370269315009156&_rdoc=1&_issn=03702693&md5=16f93d450061906f5b7100f9724046f6" title="Click to view the MathML source">6<pT<10 GeV/cer hidden">e">. 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.
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