TY  - JOUR
AU  - LHCb Collaboration (Aaij, R. et al
AU  - Martinez-Vidal, F.
AU  - Oyanguren, A.
AU  - Ruiz Valls, P.
AU  - Sanchez Mayordomo, C.
PY  - 2014
DA  - 2014//
TI  - Observation of Z production in proton-lead collisions at LHCb
T2  - J. High Energy Phys.
JO  - Journal of High Energy Physics
SP  - 030
EP  - 18pp
VL  - 09
IS  - 9
PB  - Springer
KW  - Electroweak interaction
KW  - Heavy Ions
KW  - Heavy-ion collision
KW  - Particle and resonance production
KW  - Forward physics
AB  - The first observation of Z boson production in proton-lead collisions at a centre-of-mass energy per proton-nucleon pair of root(s) N N = 5TeV is presented. The data sample corresponds to an integrated luminosity of 1.6 nb(-1) collected with the LHCb detector. The Z candidates are reconstructed from pairs of oppositely charged muons with pseudorapidities between 2.0 and 4.5 and transverse momenta above 20 GeV/c. The invariant dimuon mass is restricted to the range 60-120 GeV/c. The Z production cross-section is measured to be sigma(Z ->mu+mu-) (fwd) = 13.5(-4.0)(+5.4)(stat.) +/- 1.2(syst.) nb in the direction of the proton beam and sigma(Z ->mu+mu-) (bwd) = 10.7(-5.1)(+8.4)(stat.) +/- 1.0(syst.) nb in the direction of the lead beam, where the first uncertainty is statistical and the second systematic.
SN  - 1029-8479
UR  - http://arxiv.org/abs/1406.2885
UR  - https://doi.org/10.1007/JHEP09(2014)030
DO  - 10.1007/JHEP09(2014)030
LA  - English
N1  - WOS:000341836000001
ID  - LHCbCollaborationAaij_etal2014
ER  -