Publicação:
Observation of the Associated Production of a Single Top Quark - and a W Boson in pp Collisions at root s=8 TeV

Carregando...
Imagem de Miniatura

Data

2014-06-09

Orientador

Coorientador

Pós-graduação

Curso de graduação

Título da Revista

ISSN da Revista

Título de Volume

Editor

Amer Physical Soc

Tipo

Artigo

Direito de acesso

Acesso abertoAcesso Aberto

Resumo

The first observation of the associated production of a single top quark and a W boson is presented. The analysis is based on a data set corresponding to an integrated luminosity of 12.2 fb(-1) of proton-proton collisions at root s = 8 TeV recorded by the CMS experiment at the LHC. Events with two leptons and a jet originating from a b quark are selected. A multivariate analysis based on kinematic and topological properties is used to separate the signal from the dominant (tt) over bar background. An excess consistent with the signal hypothesis is observed, with a significance which corresponds to 6.1 standard deviations above a background-only hypothesis. The measured production cross section is 23.4 +/- 5.4 pb, in agreement with the standard model prediction.

Descrição

Palavras-chave

Idioma

Inglês

Como citar

Physical Review Letters. College Pk: Amer Physical Soc, v. 112, n. 23, 16 p., 2014.

Itens relacionados

Unidades

Departamentos

Cursos de graduação

Programas de pós-graduação