Measurement of Z boson production in Pb+Pb collisions at sqrt(s_NN)=2.76TeV with the ATLAS detector

Abstract

The ATLAS experiment has observed 1995 Z boson candidates in data corresponding to 0.15  nb-1 of integrated luminosity obtained in the 2011 LHC Pb+Pb run at √sNN=2.76  TeV. The Z bosons are reconstructed via dielectron and dimuon decay channels, with a background contamination of less than 3%. Results from the two channels are consistent and are combined. Within the statistical and systematic uncertainties, the per-event Z boson yield is proportional to the number of binary collisions estimated by the Glauber model. The elliptic anisotropy of the azimuthal distribution of the Z boson with respect to the event plane is found to be consistent with zero.


Tutti gli autori

  • G. AAD , M. BIANCO , G. CHIODINI , E. GORINI , M. PRIMAVERA , S. SPAGNOLO , A. VENTURA , ET AL.

Titolo volume/Rivista

PHYSICAL REVIEW LETTERS


Anno di pubblicazione

2013

ISSN

0031-9007

ISBN

Non Disponibile


Numero di citazioni Wos

49

Ultimo Aggiornamento Citazioni

28/04/2018


Numero di citazioni Scopus

40

Ultimo Aggiornamento Citazioni

22/04/2018


Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile