Publicação

Measurement of the W -> tau nu(tau) cross section in pp collisions at root s=7 TeV with the ATLAS experiment ATLAS Collaboration

Detalhes bibliográficos
Resumo:	The cross section for the production of W bosons with subsequent decay W→τντW→τντ is measured with the ATLAS detector at the LHC. The analysis is based on a data sample that was recorded in 2010 at a proton–proton center-of-mass energy of View the MathML sources=7 TeV and corresponds to an integrated luminosity of 34 pb−1. The cross section is measured in a region of high detector acceptance and then extrapolated to the full phase space. The product of the total W production cross section and the W→τντW→τντ branching ratio is measured to be View the MathML sourceσW→τντtot=11.1±0.3(stat)±1.7(syst)±0.4(lumi) nb.
Autores principais:	Onofre, A.
Outros Autores:	Castro, Nuno Filipe Silva Fernandes; ATLAS Collaboration
Assunto:	W boson Standard Model τ Lepton tau Lepton
Ano:	2012
País:	Portugal
Tipo de documento:	artigo
Tipo de acesso:	acesso aberto
Instituição associada:	Universidade do Minho
Idioma:	inglês
Origem:	RepositóriUM - Universidade do Minho

Descrição
Resumo:	The cross section for the production of W bosons with subsequent decay W→τντW→τντ is measured with the ATLAS detector at the LHC. The analysis is based on a data sample that was recorded in 2010 at a proton–proton center-of-mass energy of View the MathML sources=7 TeV and corresponds to an integrated luminosity of 34 pb−1. The cross section is measured in a region of high detector acceptance and then extrapolated to the full phase space. The product of the total W production cross section and the W→τντW→τντ branching ratio is measured to be View the MathML sourceσW→τντtot=11.1±0.3(stat)±1.7(syst)±0.4(lumi) nb.