Suppression of ϒ(1S) at forward rapidity in Pb–Pb collisions at √sNN =2.76 TeV

B. Abelev; J. Adam; D. Adamová; M.M. Aggarwal; M. Agnello; A. Agostinelli; Ian Bearden; Hans Bøggild; Christian Holm Christensen; Kristjan Herlache Gulbrandsen; Jens Jørgen Gaardhøje; Børge Svane Nielsen; Alexander Colliander Hansen; Ante Bilandzic; Marek Chojnacki; Valentina Zaccolo

doi:10.1016/j.physletb.2014.10.001

Suppression of ϒ(1S) at forward rapidity in Pb–Pb collisions at √^sNN =2.76 TeV

B. Abelev, J. Adam, D. Adamová, M.M. Aggarwal, M. Agnello, A. Agostinelli, Ian Bearden, Hans Bøggild, Christian Holm Christensen, Kristjan Herlache Gulbrandsen, Jens Jørgen Gaardhøje, Børge Svane Nielsen, Alexander Colliander Hansen, Ante Bilandzic, Marek Chojnacki, Valentina Zaccolo

Experimental Particle Physics

67 Citations (Scopus)

Abstract

We report on the measurement of the inclusive ϒ{hooked}(1S) production in Pb-Pb collisions at sNN=2.76 TeV carried out at forward rapidity (2.5<y<4) and down to zero transverse momentum using its μ+μ- decay channel with the ALICE detector at the Large Hadron Collider. A strong suppression of the inclusive ϒ{hooked}(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±0.05(stat)±0.04(syst). The observed ϒ{hooked}(1S) suppression tends to increase with the centrality of the collision and seems 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.

Original language	English
Article number	361-372
Journal	Physics Letters B
Volume	738
ISSN	0370-2693
DOIs	https://doi.org/10.1016/j.physletb.2014.10.001
Publication status	Published - 1 Nov 2014

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Abelev, B., Adam, J., Adamová, D., Aggarwal, M. M., Agnello, M., Agostinelli, A., Bearden, I., Bøggild, H., Christensen, C. H., Gulbrandsen, K. H., Gaardhøje, J. J., Nielsen, B. S., Hansen, A. C., Bilandzic, A., Chojnacki, M., & Zaccolo, V. (2014). Suppression of ϒ(1S) at forward rapidity in Pb–Pb collisions at √^sNN =2.76 TeV. Physics Letters B, 738, [361-372]. https://doi.org/10.1016/j.physletb.2014.10.001

Abelev, B, Adam, J, Adamová, D, Aggarwal, MM, Agnello, M, Agostinelli, A, Bearden, I , Bøggild, H , Christensen, CH , Gulbrandsen, KH , Gaardhøje, JJ , Nielsen, BS, Hansen, AC, Bilandzic, A, Chojnacki, M & Zaccolo, V 2014, 'Suppression of ϒ(1S) at forward rapidity in Pb–Pb collisions at √^sNN =2.76 TeV', Physics Letters B, vol. 738, 361-372. https://doi.org/10.1016/j.physletb.2014.10.001

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abstract = "We report on the measurement of the inclusive ϒ{hooked}(1S) production in Pb-Pb collisions at sNN=2.76 TeV carried out at forward rapidity (2.5",

author = "B. Abelev and J. Adam and D. Adamov{\'a} and M.M. Aggarwal and M. Agnello and A. Agostinelli and Ian Bearden and Hans B{\o}ggild and Christensen, {Christian Holm} and Gulbrandsen, {Kristjan Herlache} and Gaardh{\o}je, {Jens J{\o}rgen} and Nielsen, {B{\o}rge Svane} and Hansen, {Alexander Colliander} and Ante Bilandzic and Marek Chojnacki and Valentina Zaccolo",

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T1 - Suppression of ϒ(1S) at forward rapidity in Pb–Pb collisions at √sNN =2.76 TeV

AU - Abelev, B.

AU - Adam, J.

AU - Adamová, D.

AU - Aggarwal, M.M.

AU - Agnello, M.

AU - Agostinelli, A.

AU - Bearden, Ian

AU - Bøggild, Hans

AU - Christensen, Christian Holm

AU - Gulbrandsen, Kristjan Herlache

AU - Gaardhøje, Jens Jørgen

AU - Nielsen, Børge Svane

AU - Hansen, Alexander Colliander

AU - Bilandzic, Ante

AU - Chojnacki, Marek

AU - Zaccolo, Valentina

PY - 2014/11/1

Y1 - 2014/11/1

N2 - We report on the measurement of the inclusive ϒ{hooked}(1S) production in Pb-Pb collisions at sNN=2.76 TeV carried out at forward rapidity (2.5

AB - We report on the measurement of the inclusive ϒ{hooked}(1S) production in Pb-Pb collisions at sNN=2.76 TeV carried out at forward rapidity (2.5

U2 - 10.1016/j.physletb.2014.10.001

DO - 10.1016/j.physletb.2014.10.001

M3 - Journal article

SN - 0370-2693

VL - 738

JO - Physics Letters B: Particle Physics, Nuclear Physics and Cosmology

JF - Physics Letters B: Particle Physics, Nuclear Physics and Cosmology

M1 - 361-372

ER -

Suppression of ϒ(1S) at forward rapidity in Pb–Pb collisions at √sNN =2.76 TeV

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Suppression of ϒ(1S) at forward rapidity in Pb–Pb collisions at √^sNN =2.76 TeV