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Abstract:

A search is presented for same-sign top-quark production and down-type heavy quarks of charge -1/3 in events with two isolated leptons (e or μ) that have the same electric charge, at least two jets and large missing transverse momentum. The data are selected from pp collisions at ps = 7 TeV recorded by the ATLAS detector and correspond to an integrated luminosity of 1.04 fb-1. The observed data are consistent with expectations from Standard Model processes. Upper limits are set at 95% confidence level on the cross section of new sources of same-sign top-quark pair production of 1.4-2.0 pb depending on the assumed mediator mass. Upper limits are also set on the pair-production cross-section for new heavy down-type quarks; a lower limit of 450 GeV is set at 95% confidence level on the mass of heavy down-type quarks under the assumption that they decay 100% of the time to Wt. Copyright CERN.

Registro:

Documento: Artículo
Título:Search for same-sign top-quark production and fourth-generation down-type quarks in pp collisions at √s = 7 TeV with the ATLAS detector
Autor:Aad, G. et al.
Este artículo contiene 3053 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 3053 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Palabras clave:Hadron-Hadron Scattering
Año:2012
Volumen:2012
Número:4
DOI: http://dx.doi.org/10.1007/JHEP04(2012)069
Título revista:Journal of High Energy Physics
Título revista abreviado:J. High Energy Phys.
ISSN:11266708
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11266708_v2012_n4_p_Aad

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Citas:

---------- APA ----------
(2012) . Search for same-sign top-quark production and fourth-generation down-type quarks in pp collisions at √s = 7 TeV with the ATLAS detector. Journal of High Energy Physics, 2012(4).
http://dx.doi.org/10.1007/JHEP04(2012)069
---------- CHICAGO ----------
Aad, G. "Search for same-sign top-quark production and fourth-generation down-type quarks in pp collisions at √s = 7 TeV with the ATLAS detector" . Journal of High Energy Physics 2012, no. 4 (2012).
http://dx.doi.org/10.1007/JHEP04(2012)069
---------- MLA ----------
Aad, G. "Search for same-sign top-quark production and fourth-generation down-type quarks in pp collisions at √s = 7 TeV with the ATLAS detector" . Journal of High Energy Physics, vol. 2012, no. 4, 2012.
http://dx.doi.org/10.1007/JHEP04(2012)069
---------- VANCOUVER ----------
Aad, G. Search for same-sign top-quark production and fourth-generation down-type quarks in pp collisions at √s = 7 TeV with the ATLAS detector. J. High Energy Phys. 2012;2012(4).
http://dx.doi.org/10.1007/JHEP04(2012)069