Artículo
Aad, G. "Search for FCNC single top-quark production at √s=7 TeV with the ATLAS detector" (2012) Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 712(4-5):351-369
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Abstract:
A search for the production of single top-quarks via flavour-changing neutral-currents is presented. Data collected with the ATLAS detector at a centre-of-mass energy of s=7 TeV, corresponding to an integrated luminosity of 2.05 fb −1 , are used. Candidate events with a semileptonic top-quark decay signature are classified as signal- or background-like events by using several kinematic variables as input to a neural network. No signal is observed in the neural network output distribution and a Bayesian upper limit is placed on the production cross-section. The observed upper limit at 95% confidence level on the cross-section multiplied by the t→Wb branching fraction is measured to be σ qg→t ×B(t→Wb)<3.9 pb. This upper limit is converted using a model-independent approach into upper limits on the coupling strengths κ ugt /Λ<6.9⋅10 −3 TeV −1 and κ cgt /Λ<1.6⋅10 −2 TeV −1 , where Λ is the new physics scale, and on the branching fractions B(t→ug)<5.7⋅10 −5 and B(t→cg)<2.7⋅10 −4 . © 2012 CERN
Registro:
| Documento: | Artículo |
| Título: | Search for FCNC single top-quark production at √s=7 TeV with the ATLAS detector |
| Autor: | Aad, G. et al. Este artículo contiene 3036 autores, consultelos en el artículo en formato pdf. |
| Filiación: | Este artículo contiene 3036 autores con sus filiaciones, consultelas en el artículo en formato pdf. |
| Palabras clave: | FCNC; Heavy-quark production; Single top quark; Top physics |
| Año: | 2012 |
| Volumen: | 712 |
| Número: | 4-5 |
| Página de inicio: | 351 |
| Página de fin: | 369 |
| DOI: | http://dx.doi.org/10.1016/j.physletb.2012.05.022 |
| 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_v712_n4-5_p351_Aad |
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Citas:
---------- APA ----------
(2012) . Search for FCNC single top-quark production at √s=7 TeV with the ATLAS detector. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 712(4-5), 351-369.http://dx.doi.org/10.1016/j.physletb.2012.05.022
---------- CHICAGO ----------
Aad, G. "Search for FCNC single top-quark production at √s=7 TeV with the ATLAS detector" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 712, no. 4-5 (2012) : 351-369.http://dx.doi.org/10.1016/j.physletb.2012.05.022
---------- MLA ----------
Aad, G. "Search for FCNC single top-quark production at √s=7 TeV with the ATLAS detector" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 712, no. 4-5, 2012, pp. 351-369.http://dx.doi.org/10.1016/j.physletb.2012.05.022
---------- VANCOUVER ----------
Aad, G. Search for FCNC single top-quark production at √s=7 TeV with the ATLAS detector. Phys Lett Sect B Nucl Elem Part High-Energy Phys. 2012;712(4-5):351-369.http://dx.doi.org/10.1016/j.physletb.2012.05.022
