RT Journal Article
T1 Measurement of forward W → eν production in pp collisions at √s=8 TeV
A1 LHCb Collaboration, 
A1 Adeva Andany, Bernardo
A1 Borsato, Martino
A1 Chobanova, Veronika
A1 Cid Vidal, Xabier
A1 Dosil Suárez, Álvaro
A1 Fernández Albor, Víctor Manuel
A1 Fernández Prieto, Antonio
A1 Gallas Torreira, Abraham Antonio
A1 García Pardiñas, Julián
A1 Hernando Morata, José Ángel
A1 Lemos Cid, Edgar
A1 Lucio Martínez, Miriam
A1 Martínez Santos, Diego
A1 Plo Casasus, Máximo
A1 Prisciandaro, Jessica
A1 Ramos Pernas, Miguel
A1 Romero Vidal, Antonio
A1 Saborido Silva, Juan José
A1 Sanmartín Sedes, Brais
A1 Santamarina Ríos, Cibrán
A1 Vázquez Regueiro, Pablo
A1 Vieites Díaz, María
A1 Vázquez Sierra, Carlos
K1 Electroweak interaction
K1 Hadron-Hadron scattering (experiments)
K1 QCD
AB A measurement of the cross-section for W → eν production in pp collisions is presented using data corresponding to an integrated luminosity of 2 fb−1 collected by the LHCb experiment at a centre-of-mass energy of √s=8 TeV. The electrons are required to have more than 20 GeV of transverse momentum and to lie between 2.00 and 4.25 in pseudorapidity. The inclusive W production cross-sections, where the W decays to eν, are measured to be σW+→e+νe=1124.4±2.1±21.5±11.2±13.0pb, σW−→e−ν¯e=809.0±1.9±18.1±7.0±9.4pb, where the first uncertainties are statistical, the second are systematic, the third are due to the knowledge of the LHC beam energy and the fourth are due to the luminosity determination. Differential cross-sections as a function of the electron pseudorapidity are measured. The W + /W − cross-section ratio and production charge asymmetry are also reported. Results are compared with theoretical predictions at next-to-next-to-leading order in perturbative quantum chromodynamics. Finally, in a precise test of lepton universality, the ratio of W boson branching fractions is determined to be B(W→eν)/B(W→μν)=1.020±0.002±0.019, where the first uncertainty is statistical and the second is systematic.
PB Springer
SN 1029-8479
YR 2016
FD 2016
LK http://hdl.handle.net/10347/22441
UL http://hdl.handle.net/10347/22441
LA eng
NO Aaij, R., Adeva, B., Adinolfi, M. et al. Measurement of forward W → eν production in pp collisions at √s=8 TeV. J. High Energ. Phys. 2016, 30 (2016). https://doi.org/10.1007/JHEP10(2016)030
DS Minerva
RD 4 may 2026