Study of Z boson production in PbPb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV - INSPIRE

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Study of Z boson production in PbPb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV

CMS

Collaboration

Feb, 2011

22 pages

Published in:

Phys.Rev.Lett. 106 (2011) 212301

e-Print:

1102.5435 [nucl-ex]

DOI:

10.1103/PhysRevLett.106.212301

Report number:

CERN-PH-EP-2011-003,
CMS-HIN-10-003

Experiments:

CERN-LHC-CMS

View in:

reference search178 citations

Citations per year

Abstract: (arXiv)

A search for Z bosons in the mu^+mu^- decay channel has been performed in PbPb collisions at a nucleon-nucleon centre of mass energy = 2.76 TeV with the CMS detector at the LHC, in a 7.2 inverse microbarn data sample. The number of opposite-sign muon pairs observed in the 60--120 GeV/c2 invariant mass range is 39, corresponding to a yield per unit of rapidity (y) and per minimum bias event of (33.8 ± 5.5 (stat) ± 4.4 (syst)) 10^{-8}, in the |y|<2.0 range. Rapidity, transverse momentum, and centrality dependencies are also measured. The results agree with next-to-leading order QCD calculations, scaled by the number of incoherent nucleon-nucleon collisions.

25.75.Cj
14.70.Hp
12.38.Bx
heavy ion: scattering
lead
Z0: hadroproduction
Z0: leptonic decay
dimuon: mass spectrum
Z0: yield: measured
rapidity dependence

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Figures(3)

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