Buscar

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

 Detalle_Publicacion

Search for anomalous single top quark production in association with a photon in pp collisions at ?s = 8 TeV

Abstract: The result of a search for flavor changing neutral currents (FCNC) through single top quark production in association with a photon is presented. The study is based on proton-proton collisions at a center-of-mass energy of 8 TeV using data collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 19.8 fb?1. The search for t? events where t ? Wb and W ? ?? is conducted in final states with a muon, a photon, at least one hadronic jet with at most one being consistent with originating from a bottom quark, and missing transverse momentum. No evidence of single top quark production in association with a photon through a FCNC is observed. Upper limits at the 95% confidence level are set on the tu? and tc? anomalous couplings and translated into upper limits on the branching fraction of the FCNC top quark decays: ?(t ? u?) < 1.3 × 10? 4 and ?(t ? c?) < 1.7 × 10? 3. Upper limits are also set on the cross section of associated t? production in a restricted phase-space region. These are the most stringent limits currently available.

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

 Fuente: Journal of High Energy Physics, Vol. 2016, Num. 4, Art. Num. 35

Editorial: Springer Verlag

 Fecha de publicación: 01/04/2016

Nº de páginas: 38

Tipo de publicación: Artículo de Revista

 DOI: 10.1007/JHEP04(2016)035

ISSN: 1126-6708,1029-8479

Url de la publicación: https://doi.org/10.1007/JHEP04(2016)035

Autores/as

KHACHATRYAN, VLADIMIR

JUAN RAMON CASTIÑEIRAS DE SAA

PABLO DE CASTRO MANZANO

JUAN GARCIA FERRERO

MARIA AMPARO LOPEZ VIRTO

RAFAEL JOSE MARCO DE LUCAS

FRANCISCA JAVIELA MUÑOZ SANCHEZ

ANA YAIZA RODRIGUEZ MARRERO