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Title of Journal: Indian J Phys

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Abbravation: Indian Journal of Physics

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Springer-Verlag

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DOI

10.1007/bf00561907

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0974-9845

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Study of the quarkonium polarization in the muon c

Authors: E Scomparin
Publish Date: 2011/07/12
Volume: 85, Issue: 6, Pages: 935-940
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Abstract

The study of quarkonium polarization at hadron colliders represents an important test of the production models Recent results obtained at CDF are in striking disagreement with NRQCD predictions although such a model correctly reproduces the production cross sections Furthermore in nucleusnucleus collisions the observed degree of polarization may be related to the characteristics of deconfined matter Because of these interesting features quarkonium polarization will surely represent an interesting observable at LHC energies In ALICE the polarization of the Ω and Γ states can be measured in the dilepton channel both in the central barrel and in the forward 25y4 muon arm We present the results of a feasibility study relative to the muon channel concerning pp and PbPb collisions showing the expected performance for the measurement of J/Ω and Γ polarization both as a function of transverse momentum and centrality

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