TY  - JOUR
AB  - We report on the measurement of the inclusive $\Upsilon$(1S) production in Pb-Pb collisions at $\sqrt{s_{\rm NN}}=2.76$ TeV carried out at forward rapidity ($2.5<y<4$) and down to zero transverse momentum using its $\mu^{+}\mu^{-}$ decay channel with the ALICE detector at the Large Hadron Collider. A strong suppression of the inclusive $\Upsilon$(1S) yield is observed with respect to pp collisions scaled by the number of independent nucleon-nucleon collisions. The nuclear modification factor, for events in the 0-90$\%$ centrality range, amounts to $0.30\pm0.05{\rm (stat)}\pm0.04{\rm (syst)}$. The observed $\Upsilon$(1S) suppression increases with the centrality of the collision and is more pronounced than in corresponding mid-rapidity measurements. Our results are compared with model calculations, which are found to underestimate the measured suppression and fail to reproduce its rapidity dependence.
AU  - Abelev, Betty
AU  - Adam, Jaroslav
AU  - Adamová, Dagmar
AU  - Aggarwal, Madan M.
AU  - Agnello, Michelangelo
AU  - Agostinelli, Andrea
AU  - Agrawal, Nikita
AU  - Ahammed, Zubayer
AU  - Ahmad, Nazeer
AU  - Ahn, Sang Un
AU  - Alme, Johan
AU  - Erdal, Hege Austrheim
AU  - Helstrup, Håvard
AU  - Hetland, Kristin Fanebust
AU  - Kileng, Bjarte
AU  - Altinpinar, Sedat
AU  - Djuvsland, Øystein
DA  - 20141110
KW  - Vdp::Matematikk Og Naturvitenskap: 400::Fysikk: 430::Kjerne- Og Elementærpartikkelfysikk: 431 ; Vdp::Mathematics And Natural Scienses: 400::Physics: 430::Nuclear And Elementary Particle Physics: 431
LA  - eng
PB  - Elsevier
PY  - 20141110
TI  - Suppression of $\Upsilon$(1S) at forward rapidity in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV
Y2  - 2021-04-11T01:24:18+02:00
ER  -