RT Journal Article
T1 Measurement of the forward Z boson production cross-section in pp collisions at √s =7 TeV
A1 LHCb Collaboration, 
A1 Adeva Andany, Bernardo
A1 Dosil Suárez, Álvaro
A1 Fernández Albor, Víctor Manuel
A1 Gallas Torreira, Abraham Antonio
A1 García Pardiñas, Julián
A1 Hernando Morata, José Ángel
A1 Plo Casasus, Máximo
A1 Romero Vidal, Antonio
A1 Saborido Silva, Juan José
A1 Sanmartín Sedes, Brais
A1 Santamarina Ríos, Cibrán
A1 Vázquez Regueiro, Pablo
A1 Vázquez Sierra, Carlos
A1 Vieites Díaz, María
K1 Electroweak interaction
K1 Hadron-Hadron Scattering
K1 Proton-proton scattering
K1 QCD
K1 Forward physics
AB A measurement of the production cross-section for Z bosons that decay to muons is presented. The data were recorded by the LHCb detector during pp collisions at a centre-of-mass energy of 7 TeV, and correspond to an integrated luminosity of 1.0 fb−1. The cross-section is measured for muons in the pseudorapidity range 2.0 < η < 4.5 with transverse momenta pT > 20 GeV/c. The dimuon mass is restricted to 60 < M μ + μ − < 120 GeV/c2. The measured cross-section isσZ→μ+μ−=(76.0±0.3±0.5±1.0±1.3)pbwhere the uncertainties are due to the sample size, systematic effects, the beam energy and the luminosity. This result is in good agreement with theoretical predictions at next-to-next-to-leading order in perturbative quantum chromodynamics. The cross-section is also measured differentially as a function of kinematic variables of the Z boson. Ratios of the production cross-sections of electroweak bosons are presented using updated LHCb measurements of W boson production. A precise test of the Standard Model is provided by the measurement of the ratioσW+→μ+νμ+σW−→μ−ν¯μσZ→μ+μ−=20.63±0.09±0.12±0.05,where the uncertainty due to luminosity cancels.
PB Springer
SN 1029-8479
YR 2015
FD 2015
LK http://hdl.handle.net/10347/22076
UL http://hdl.handle.net/10347/22076
LA eng
NO Aaij, R., Adeva, B., Adinolfi, M. et al. Measurement of the forward Z boson production cross-section in pp collisions at √s=7 TeV. J. High Energ. Phys. 2015, 39 (2015). https://doi.org/10.1007/JHEP08(2015)039
DS Minerva
RD 24 abr 2026