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Abstract:

This Letter presents a search at the LHC for s-channel single top-quark production in proton-proton collisions at a centre-of-mass energy of 8 TeV. The analyzed data set was recorded by the ATLAS detector and corresponds to an integrated luminosity of 20.3 fb -1 . Selected events contain one charged lepton, large missing transverse momentum and exactly two b-tagged jets. A multivariate event classifier based on boosted decision trees is developed to discriminate s-channel single top-quark events from the main background contributions. The signal extraction is based on a binned maximum-likelihood fit of the output classifier distribution. The analysis leads to an upper limit on the s-channel single top-quark production cross-section of 14.6 pb at the 95% confidence level. The fit gives a cross-section of σ s = 5.0 ± 4.3 pb, consistent with the Standard Model expectation. © 2014 The Authors.

Registro:

Documento: Artículo
Título:Search for s-channel single top-quark production in proton-proton collisions at √s=8 TeV with the ATLAS detector
Autor:Aad, G. et al.
Este artículo contiene 2889 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 2889 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Palabras clave:ATLAS; Electroweak production; S-Channel; Top-quark
Año:2015
Volumen:740
Página de inicio:118
Página de fin:136
DOI: http://dx.doi.org/10.1016/j.physletb.2014.11.042
Título revista:Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Título revista abreviado:Phys Lett Sect B Nucl Elem Part High-Energy Phys
ISSN:03702693
CODEN:PYLBA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v740_n_p118_Aad

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Citas:

---------- APA ----------
(2015) . Search for s-channel single top-quark production in proton-proton collisions at √s=8 TeV with the ATLAS detector. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 740, 118-136.
http://dx.doi.org/10.1016/j.physletb.2014.11.042
---------- CHICAGO ----------
Aad, G. "Search for s-channel single top-quark production in proton-proton collisions at √s=8 TeV with the ATLAS detector" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 740 (2015) : 118-136.
http://dx.doi.org/10.1016/j.physletb.2014.11.042
---------- MLA ----------
Aad, G. "Search for s-channel single top-quark production in proton-proton collisions at √s=8 TeV with the ATLAS detector" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 740, 2015, pp. 118-136.
http://dx.doi.org/10.1016/j.physletb.2014.11.042
---------- VANCOUVER ----------
Aad, G. Search for s-channel single top-quark production in proton-proton collisions at √s=8 TeV with the ATLAS detector. Phys Lett Sect B Nucl Elem Part High-Energy Phys. 2015;740:118-136.
http://dx.doi.org/10.1016/j.physletb.2014.11.042