Abstract

The production of W±Z events in proton--proton collisions at a centre-of-mass energy of 13 TeV is measured with the ATLAS detector at the LHC. The collected data correspond to an integrated luminosity of 3.2 fb−1. The W±Z candidates are reconstructed using leptonic decays of the gauge bosons into electrons or muons. The measured inclusive cross section in the detector fiducial region for leptonic decay modes is σfid.W±Z→ℓ′νℓℓ=63.2±3.2 (stat.) ±2.6 (sys.) ±1.5 (lumi.) fb. In comparison, the next-to-leading-order Standard Model prediction is 53.4+3.6−2.8 fb. The extrapolation of the measurement from the fiducial to the total phase space yields σtot.W±Z=50.6±2.6 (stat.) ±2.0 (sys.) ±0.9 (th.) ±1.2 (lumi.) pb, in agreement with a recent next-to-next-to-leading-order calculation of 48.2+1.1−1.0 pb. The cross section as a function of jet multiplicity is also measured, together with the charge-dependent W+Z and W−Z cross sections and their ratio.

Autore Pugliese

• Ventura Andrea , Gorini Edoardo , Spagnolo Stefania Antonia

Tutti gli autori

• Aad G. , Chiodini G. , Gorini E. , Primavera M. , Spagnolo S.A. , Ventura A.

Titolo volume/Rivista

PHYSICS LETTERS. SECTION B

Anno di pubblicazione

2016

ISSN

0370-2693

ISBN

Non Disponibile

Numero di citazioni Wos

11

Ultimo Aggiornamento Citazioni

28/04/2018

Numero di citazioni Scopus

11

Ultimo Aggiornamento Citazioni

22/04/2018

Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile