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Measurement of the cross section ratio stt-bb-/stt-jj in pp collisions at vs=8TeV

Abstract: The first measurement of the cross section ratio sttbb/sttjj is presented using a data sample corresponding to an integrated luminosity of 19.6fb-1 collected in pp collisions at vs=8TeV with the CMS detector at the LHC. Events with two leptons (eor µ) and four reconstructed jets, including two identified as b quark jets, in the final state are selected. The ratio is determined for a minimum jet transverse momentum pTof both 20 and 40GeV/c. The measured ratio is 0.022 ±0.003 (stat) ±0.005 (syst) for pT>20GeV/c. The absolute cross sections sttbb and sttjj are also measured. The measured ratio for pT>40GeV/c is compatible with a theoretical quantum chromodynamics calculation at next-to-leading order.

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

 Fuente: Physics Letters B, Vol. 746, Pp. 132–153, 2015

Editorial: Elsevier

 Fecha de publicación: 01/06/2015

Nº de páginas: 22

Tipo de publicación: Artículo de Revista

 DOI: 10.1016/j.physletb.2015.04.060

ISSN: 0370-2693,1873-2445

Proyecto español: FPA2014-55295-C3-1-R ; FPA 2011-28694-C02-01

Url de la publicación: https://doi.org/10.1016/j.physletb.2015.04.060

Autores/as

KHACHATRYAN, VLADIMIR

JAVIER ANDRES BROCHERO CIFUENTES

MARCOS FERNANDEZ GARCIA

ALBERTO GRAZIANO

MARIA AMPARO LOPEZ VIRTO

RAFAEL JOSE MARCO DE LUCAS

FRANCISCA JAVIELA MUÑOZ SANCHEZ

ANA YAIZA RODRIGUEZ MARRERO