Measurement of the top quark pair cross section with ATLAS in <i>pp</i> collisions at √s = 7 TeV using final states with an electron or a muon and a hadronically decaying τ lepton
A measurement of the cross section of top quark pair production in proton–proton collisions recorded with the ATLAS detector at the Large Hadron Collider at a centre-of-mass energy of 7 TeV is reported. The data sample used corresponds to an integrated luminosity of 2.05 fb<sup>−1</sup>....
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2012 |
| País: | Argentina |
| Institución: | Universidad Nacional de La Plata |
| Repositorio: | SEDICI (UNLP) |
| Idioma: | inglés |
| OAI Identifier: | oai:sedici.unlp.edu.ar:10915/79652 |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/79652 |
| Access Level: | acceso abierto |
| Palabra clave: | Ciencias Exactas Física Medición top quark physics Lepton + τ ATLAS detector |
| Sumario: | A measurement of the cross section of top quark pair production in proton–proton collisions recorded with the ATLAS detector at the Large Hadron Collider at a centre-of-mass energy of 7 TeV is reported. The data sample used corresponds to an integrated luminosity of 2.05 fb<sup>−1</sup>. Events with an isolated electron or muon and a τ lepton decaying hadronically are used. In addition, a large missing transverse momentum and two or more energetic jets are required. At least one of the jets must be identified as originating from a b quark. The measured cross section, σ<sub>tt</sub> = 186 ± 13 (stat.) ± 20 (syst.) ± 7 (lumi.) pb, is in good agreement with the Standard Model prediction. |
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