# Researchers portal

Buscar

Estamos realizando la búsqueda. Por favor, espere...

## Inclusive and differential measurements of the tt charge asymmetry in pp collisions at ?s=8 TeV

Abstract: The tt- charge asymmetry is measured in proton-proton collisions at a centre-of-mass energy of 8 TeV. The data, collected with the CMS experiment at the LHC, correspond to an integrated luminosity of 19.7 fb-1. Selected events contain an electron or a muon and four or more jets, where at least one jet is identified as originating from b-quark hadronization. The inclusive charge asymmetry is found to be 0.0010±0.0068 (stat)±0.0037 (syst). In addition, differential charge asymmetries as a function of rapidity, transverse momentum, and invariant mass of the tt- system are studied. For the first time at the LHC, the measurements are also performed in a reduced fiducial phase space of top quark pair production, with an integrated result of -0.0035±0.0072 (stat)±0.0031 (syst). All measurements are consistent within two standard deviations with zero asymmetry as well as with the predictions of the standard model.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

Fuente: Physics Letters B, Vol.757, Pp. 154?179 (2016)

Editorial: Elsevier

Fecha de publicación: 01/06/2016

Nº de páginas: 26

Tipo de publicación: Artículo de Revista

ISSN: 0370-2693,1873-2445

Url de la publicación: https://doi.org/10.1016/j.physletb.2016.03.060

### Autores/as

JUAN RAMON CASTIÑEIRAS DE SAA

PABLO DE CASTRO MANZANO

MARCOS FERNANDEZ GARCIA

ALBERTO GRAZIANO

MARIA AMPARO LOPEZ VIRTO

RAFAEL JOSE MARCO DE LUCAS

FRANCISCA JAVIELA MUÑOZ SANCHEZ

ANA YAIZA RODRIGUEZ MARRERO