W and Z boson production in p-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV

Submission Date: 
09/11/2016
Article Information
Accepted date: 
04/02/2017
Publication date: 
15/02/2017
Article Citation reference: 
JHEP 02 (2017) 077
HEP Data
No HEP Data: 
0
Submission Form
System: 
p-Pb
Energy: 
5.02 TeV
Abstract Plain Text: 

The W and Z boson production is measured with the ALICE experiment in proton-lead collisions at $\sqrt{s_{NN}}$ = 5.02 TeV. W and Z bosons are measured in the semi-muonic and di-muonic decay channels, respectively. The W boson contribution is extracted from a MC template fit of the transverse momentum distributions of muons in the pseudorapidty range $-4<\eta<-2.5$ and $p_\mathrm{T}>10$~GeV/$c$. Z boson candidates are reconstructed from the pair of opposite sign muons with transverse momenta above 20 GeV/$c$ and $-4<\eta<-2.5$. The invariant mass of the dimuons is restricted in a range between 60 and 120 GeV/$c^2$. The cross section of W and Z boson production is measured in the forward and backward rapidity region, corresponding to $2.03 < y^\mu_{cm} < 3.53$ and $-4.46 < y^\mu_{cm} < -2.96$, respectively. The lepton charge charge asymmetry of W boson production will be shown as well. The differential measurements of the yields of muons from W boson decays as a function of centrality will be discussed.