Measurement of the relative width difference of the B0-B¯0 system with the ATLAS detector

Abstract

This paper presents the measurement of the relative width difference ΔΓd/Γd of the B0-B¯0 system using the data collected by the ATLAS experiment at the LHC in pp collisions at sqrt(s) = 7 TeV and sqrt(s) = 8 TeV and corresponding to an integrated luminosity of 25.2 fb−1. The value of ΔΓd/Γd is obtained by comparing the decay-time distributions of B0→J/ψKS and B0→J/ψK∗0(892) decays. The result is ΔΓd/Γd=(−0.1±1.1 (stat.)±0.9 (syst.))×10−2. Currently, this is the most precise single measurement of ΔΓd/Γd. It agrees with the Standard Model prediction and the measurements by other experiments.


Tutti gli autori

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

Titolo volume/Rivista

JOURNAL OF HIGH ENERGY PHYSICS


Anno di pubblicazione

2016

ISSN

1029-8479

ISBN

Non Disponibile


Numero di citazioni Wos

1

Ultimo Aggiornamento Citazioni

28/04/2018


Numero di citazioni Scopus

2

Ultimo Aggiornamento Citazioni

28/04/2018


Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile