The ell
ipt
ic flow, <
span
id="mml
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sub>2
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span><
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span>, of muon
s from heavy-flavour hadron decay
s at forward rap
id
ity (<
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itle="Cl
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span><
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is mea
sured
in Pb&nda
sh;Pb coll
ision
s at <
span
id="mml
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itle="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"><img class="imgLazyJSB inlineImage" 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">script><img height="15" border="0" style="vertical-align:bottom" width="105" alt="View the MathML source" title="View the MathML source" src="http://origin-ars.els-cdn.com/content/image/1-s2.0-S0370269315009156-si1.gif">script><
span cla
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span>
span>
span> w
ith the ALICE detector at the LHC. The
scalar product, two- and four-part
icle
Q cumulant
s and Lee&nda
sh;Yang zero
s method
s are u
sed. The dependence of the <
span
id="mml
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issn=03702693&md5=af612936c94892de2098a0b323cdcab5" t
itle="Cl
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source">v<
sub>2
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span><
span cla
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span>
span> of muon
s from heavy-flavour hadron decay
s on the coll
ision central
ity,
in the range 0&nda
sh;40%, and on tran
sver
se momentum, <
span
id="mml
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id=1-
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issn=03702693&md5=ab56179a7d37d31ca4d53305b3fadf95" t
itle="Cl
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sub>T
sub>
span><
span cla
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span>,
is stud
ied
in the
interval <
span
id="mml
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sc
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issn=03702693&md5=cce0b681be6752b5db65f41f44926e99" t
itle="Cl
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sub>T
sub><10 GeV/c
span><
span cla
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span>
span>
span>. A po
sit
ive <
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itle="Cl
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sub>2
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span><
span cla
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is ob
served w
ith the
scalar product and two-part
icle
Q cumulant
s in
sem
i-central coll
ision
s (10&nda
sh;20% and 20&nda
sh;40% central
ity cla
sse
s) for the <
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issn=03702693&md5=ab56179a7d37d31ca4d53305b3fadf95" t
itle="Cl
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source">p<
sub>T
sub>
span><
span cla
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span>
span>
span>
interval from 3 to about <
span
id="mml
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issn=03702693&md5=fd2ebd478896cb30c84948fcd44ee05f" t
itle="Cl
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iew the MathML
source">5 GeV/c
span><
span cla
ss="mathConta
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idden"><
span cla
ss="mathCode">
span>
span>
span> w
ith a
sign
if
icance larger than 3
σ , ba
sed on the comb
inat
ion of
stat
ist
ical and
sy
stemat
ic uncerta
int
ie
s. The <
span
id="mml
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if&_u
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issn=03702693&md5=af612936c94892de2098a0b323cdcab5" t
itle="Cl
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sub>2
sub>
span><
span cla
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span>
span>
span> magn
itude tend
s to decrea
se toward
s more central coll
ision
s and w
ith
increa
sing <
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id="mml
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span cla
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if&_u
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issn=03702693&md5=ab56179a7d37d31ca4d53305b3fadf95" t
itle="Cl
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source">p<
sub>T
sub>
span><
span cla
ss="mathConta
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span cla
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span>
span>
span>. It become
s compat
ible w
ith zero
in the
interval <
span
id="mml
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ss="mathml
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ss="formulatext
st
ixSupport mathImg" data-mathURL="/
sc
ience?_ob=MathURL&_method=retr
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id=1-
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if&_u
ser=111111111&_p
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issn=03702693&md5=16f93d450061906f5b7100f9724046f6" t
itle="Cl
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iew the MathML
source">6<p<
sub>T
sub><10 GeV/c
span><
span cla
ss="mathConta
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idden"><
span cla
ss="mathCode">
span>
span>
span>. The re
sult
s are compared to model
s de
scr
ib
ing the
interact
ion of heavy quark
s and open heavy-flavour hadron
s w
ith the h
igh-den
sity med
ium formed
in h
igh-energy heavy-
ion coll
ision
s.