Measurements are presented of electroweak boson production using data from pp collisions at a centre-of-mass energy of (Formula Presented.) TeV. The analysis is based on an integrated luminosity of 2.0 fb−1 recorded with the LHCb detector. The bosons are identified in the W → μν ; Z → μ+μ− decay channels. The cross-sections are measured for muons in the pseudorapidity range 2.0 < η < 4.5, with transverse momenta pT> 20 GeV/c and, in the case of the Z boson, a dimuon mass within (Formula Presented.). The results are (Formula Presented.), where the first uncertainties are statistical, the second are systematic, the third are due to the knowledge of the LHC beam energy ; the fourth are due to the luminosity determination. The evolution of the W ; Z boson cross-sections with centre-of-mass energy is studied using previously reported measurements with 1.0 fb−1 of data at 7 TeV. Differential distributions are also presented. Results are in good agreement with theoretical predictions at next-to-next-to-leading order in perturbative quantum chromodynamics.[Figure not available: see fulltext.] © 2016, The Author(s).

Measurement of forward W ; Z boson production in pp collisions at (Formula Presented.) TeV

PAPPAGALLO, MARCO IGNAZIO;
2016-01-01

Abstract

Measurements are presented of electroweak boson production using data from pp collisions at a centre-of-mass energy of (Formula Presented.) TeV. The analysis is based on an integrated luminosity of 2.0 fb−1 recorded with the LHCb detector. The bosons are identified in the W → μν ; Z → μ+μ− decay channels. The cross-sections are measured for muons in the pseudorapidity range 2.0 < η < 4.5, with transverse momenta pT> 20 GeV/c and, in the case of the Z boson, a dimuon mass within (Formula Presented.). The results are (Formula Presented.), where the first uncertainties are statistical, the second are systematic, the third are due to the knowledge of the LHC beam energy ; the fourth are due to the luminosity determination. The evolution of the W ; Z boson cross-sections with centre-of-mass energy is studied using previously reported measurements with 1.0 fb−1 of data at 7 TeV. Differential distributions are also presented. Results are in good agreement with theoretical predictions at next-to-next-to-leading order in perturbative quantum chromodynamics.[Figure not available: see fulltext.] © 2016, The Author(s).
File in questo prodotto:
Non ci sono file associati a questo prodotto.

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/11586/194179
 Attenzione

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

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 41
  • ???jsp.display-item.citation.isi??? 121
social impact