The W and Z boson production was measured via the muonic decay channel in proton-lead collisions at root s(NN) = 5.02 TeV at the Large Hadron Collider with the ALICE detector. The measurement covers backward (4.46 < y(cms) < 2.96) and forward (2.03 < y(cms) < 3.53) rapidity regions, corresponding to Pb-going and p-going directions, respectively. The Z-boson production cross section, with dimuon invariant mass of 60 < m(mu mu) < 120 GeV/c(2) and muon transverse momentum (p(T)(mu)) larger than 20 GeV/c, is measured. The production cross section and charge asymmetry of muons from W-boson decays with p(T)(mu) > 10 GeV/c are determined. The results are compared to theoretical calculations both with and without including the nuclear modification of the parton distribution functions. The W-boson production is also studied as a function of the collision centrality: the cross section of muons from W-boson decays is found to scale with the average number of binary nucleon-nucleon collisions within uncertainties.

W and Z boson production in p-Pb collisions at √sNN=5.02 TeV

Lea, R.;PAGANO, Davide;
2017-01-01

Abstract

The W and Z boson production was measured via the muonic decay channel in proton-lead collisions at root s(NN) = 5.02 TeV at the Large Hadron Collider with the ALICE detector. The measurement covers backward (4.46 < y(cms) < 2.96) and forward (2.03 < y(cms) < 3.53) rapidity regions, corresponding to Pb-going and p-going directions, respectively. The Z-boson production cross section, with dimuon invariant mass of 60 < m(mu mu) < 120 GeV/c(2) and muon transverse momentum (p(T)(mu)) larger than 20 GeV/c, is measured. The production cross section and charge asymmetry of muons from W-boson decays with p(T)(mu) > 10 GeV/c are determined. The results are compared to theoretical calculations both with and without including the nuclear modification of the parton distribution functions. The W-boson production is also studied as a function of the collision centrality: the cross section of muons from W-boson decays is found to scale with the average number of binary nucleon-nucleon collisions within uncertainties.
File in questo prodotto:
File Dimensione Formato  
2-s2.0-85013187917.pdf

accesso aperto

Tipologia: Full Text
Licenza: DRM non definito
Dimensione 672.15 kB
Formato Adobe PDF
672.15 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11379/491835
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 28
  • ???jsp.display-item.citation.isi??? 19
social impact