Measurement of the mass difference between top and antitop quarks in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector

Abstract

A measurement of the mass difference between top and anti-top quarks is presented. In a 4.7 fb−1 data sample of proton–proton collisions at View the MathML source recorded with the ATLAS detector at the LHC, events consistent with sqrt(s) = 7 TeV production and decay into a single charged lepton final state are reconstructed. For each event, the mass difference between the top and anti-top quark candidate is calculated. A two b-tag requirement is used in order to reduce the background contribution. A maximum likelihood fit to these per-event mass differences yields Delta m = m(t) - m(anti-t) = 0.67 +- 0.61 (stat) +- 0.41 (syst) GeV, consistent with CPT invariance.


Tutti gli autori

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

Titolo volume/Rivista

PHYSICS LETTERS. SECTION B


Anno di pubblicazione

2014

ISSN

0370-2693

ISBN

Non Disponibile


Numero di citazioni Wos

6

Ultimo Aggiornamento Citazioni

28/04/2018


Numero di citazioni Scopus

Non Disponibile

Ultimo Aggiornamento Citazioni

Non Disponibile


Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile