Measurement of the topological branching fractions of the τ lepton at LEP
Using data collected with the L3 detector at LEP from 1992 to 1995 on the Z peak, we determine the branching fractions of the τ lepton into one, three and five charged particles to be: B(τ → (1-prong)) = 85.274 ± 0.105 ± 0.073%, B(τ → (3-prong)) = 14.556 ± 0.105 ± 0.076%, B(τ → (5-prong)) = 0.170 ±...
| Autores: | ; |
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| Tipo de documento: | Artigo |
| Estado: | Published version |
| Data de publicação: | 2001 |
| País: | Argentina |
| Recursos: | UNLP |
| Repositório: | SEDICI (UNLP) |
| Idioma: | Inglês |
| OAI Identifier: | oai:sedici.unlp.edu.ar:10915/76421 |
| Acesso em linha: | http://sedici.unlp.edu.ar/handle/10915/76421 |
| Nível de acesso: | Acesso aberto |
| Palavra-chave: | Ciencias Exactas L3 detector at LEP τ lepton topological branching fractions Física |
| Resumo: | Using data collected with the L3 detector at LEP from 1992 to 1995 on the Z peak, we determine the branching fractions of the τ lepton into one, three and five charged particles to be: B(τ → (1-prong)) = 85.274 ± 0.105 ± 0.073%, B(τ → (3-prong)) = 14.556 ± 0.105 ± 0.076%, B(τ → (5-prong)) = 0.170 ± 0.022 ± 0.026%. The first uncertainties are statistical and the second systematic. The accuracy of these measurements alone is similar to that of the current world average. |
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