SLIDE 11 ) c (GeV/
T
p
2 4 6 8 10 12
2
v
0.1 0.2 0.3 0.4 0.5 ALICE Preliminary
= 2.76 TeV
NN
s Pb-Pb, 0-10% Centrality Class
, |y| < 0.7 | > 0.9} η ∆ {EP, |
2
v ,
±
Heavy-flavour decay e , 2.5 < y < 4 {2}
2
v ,
±
µ Heavy-flavour decay
ALI−PREL−77612
) c (GeV/
T
p
2 4 6 8 10 12
2
v
0.1 0.2 0.3 0.4 0.5 ALICE Preliminary
= 2.76 TeV
NN
s Pb-Pb, 10-20% Centrality Class
, |y| < 0.7 | > 0.9} η ∆ {EP, |
2
v ,
±
Heavy-flavour decay e , 2.5 < y < 4 {2}
2
v ,
±
µ Heavy-flavour decay
ALI−PREL−77620
) c (GeV/
T
p
2 4 6 8 10 12 14
2
v
0.1 0.2 0.3 0.4 0.5 ALICE Preliminary
= 2.76 TeV
NN
s Pb-Pb, 20-40% Centrality Class
, |y| < 0.7 | > 0.9} η ∆ {EP, |
2
v ,
±
Heavy-flavour decay e , 2.5 < y < 4 {2}
2
v ,
±
µ Heavy-flavour decay
ALI−PREL−77628
0-10% 10-20% 20-40%
AZIMUTHAL ANISOTROPY (V2)
heavy-flavour decay electrons (|y|<0.7) compared with heavy- flavour decay muons (2.5 < y <4) Non-zero v2 observed in semi-central Pb-Pb collisions. Indication for v2(20-40%) > v2(10-20%) > v2(0-10%). v2 of heavy-flavour decay electrons consistent with that of HF-decay muons. Confirms strong interaction of heavy quarks with the medium. Supports that charm quarks participate in the collective expansion of the medium.
dN dϕ = N0 2π (1 + 2v1 cos(ϕ − Ψ1) + 2v2 cos(ϕ − Ψ2) + ...)
11
