Suppression of $\Upsilon$(1S) at forward rapidity in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV

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2.76 TeV
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The ALICE collaboration has measured the inclusive Upsilon(1S) production in Pb-Pb collisions at sqrt(s_NN)=2.76 TeV,
in the rapidity range 2.5 < y < 4 and down to zero transverse momentum. A suppression of the inclusive  Upsilon(1S) yield
is observed with respect to binary-scaled pp collisions. The nuclear modification factor, integrated over the 0%-90% most
central collisions is 0.438±0.065(stat)+0.096−0.081(syst). The observed suppression is more pronounced
in central collisions and shows a weak rapidity dependence when compared to mid-rapidity measurements.
The results are compared to model calculations.

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The ID of the figures in the repository are: ALI-PUB-85784, ALI-PUB-85788, ALI-PUB-85792, ALI-PUB-85796