Inclusive and differential measurements of the tt- charge asymmetry in proton-proton collisions at s=7 TeV

Abstract

The t t-bar charge asymmetry is measured in events containing a charged lepton (electron or muon) and at least four jets, one of which is identified as originating from b-quark hadronization. The analyzed dataset corresponds to an integrated luminosity of 5.0 inverse femtobarns collected with the CMS detector at the LHC. An inclusive and three differential measurements of the t t-bar charge asymmetry as a function of rapidity, transverse momentum, and invariant mass of the t t-bar system are presented. The measured inclusive t t-bar charge asymmetry is A(C) = 0.004 +/- 0.010 (stat.) +/- 0.011 (syst.). This result and the three differential measurements are consistent with zero asymmetry as well as with the predictions of the standard model.


Tutti gli autori

  • Pugliese, Gabriella Maria Incoronata , Maggi, Giorgio Pietro , Creanza, Donato Maria , My, Salvatore , Iaselli, Giuseppe , et al.

Titolo volume/Rivista

PHYSICS LETTERS. SECTION B


Anno di pubblicazione

2012

ISSN

0370-2693

ISBN

Non Disponibile


Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

Non Disponibile


Numero di citazioni Scopus

72

Ultimo Aggiornamento Citazioni

2017-04-23 03:20:56


Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile