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Abstract:

This Letter presents a search for tb resonances in 1.04fb - 1 of LHC proton-proton collision data collected by the ATLAS detector at a center-of-mass energy of 7 TeV. Events with a lepton, missing transverse momentum, and two jets are selected and the invariant mass of the corresponding final state is reconstructed. The search exploits the shape of the tb invariant mass distribution compared to the expected standard model backgrounds. The model of a right-handed WR′ with standard model-like couplings is chosen as the benchmark model for this search. No statistically significant excess of events is observed in the data, and upper limits on the cross section times the branching ratio of WR′ resonances at 95% C.L. lie in the range of 6.1-1.0 pb for WR′ masses ranging from 0.5 to 2.0 TeV. These limits are translated into a lower bound on the allowed right-handed WR′ mass, giving m WR′ >1.13TeV at 95% C.L. © 2012 CERN.

Registro:

Documento: Artículo
Título:Search for tb resonances in proton-proton collisions at √s=7TeV with the ATLAS detector
Autor:Aad, G. et al.
Este artículo contiene 3038 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 3038 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Palabras clave:ATLAS detectors; Benchmark models; Branching ratio; Center-of-mass energies; Cross section; Final state; Invariant mass; Invariant mass distribution; Lower bounds; Proton proton collisions; Standard model; Transverse momenta; Upper limits; High energy physics; Resonance; Tellurium compounds
Año:2012
Volumen:109
Número:8
DOI: http://dx.doi.org/10.1103/PhysRevLett.109.081801
Título revista:Physical Review Letters
Título revista abreviado:Phys Rev Lett
ISSN:00319007
CODEN:PRLTA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v109_n8_p_Aad

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Citas:

---------- APA ----------
(2012) . Search for tb resonances in proton-proton collisions at √s=7TeV with the ATLAS detector. Physical Review Letters, 109(8).
http://dx.doi.org/10.1103/PhysRevLett.109.081801
---------- CHICAGO ----------
Aad, G. "Search for tb resonances in proton-proton collisions at √s=7TeV with the ATLAS detector" . Physical Review Letters 109, no. 8 (2012).
http://dx.doi.org/10.1103/PhysRevLett.109.081801
---------- MLA ----------
Aad, G. "Search for tb resonances in proton-proton collisions at √s=7TeV with the ATLAS detector" . Physical Review Letters, vol. 109, no. 8, 2012.
http://dx.doi.org/10.1103/PhysRevLett.109.081801
---------- VANCOUVER ----------
Aad, G. Search for tb resonances in proton-proton collisions at √s=7TeV with the ATLAS detector. Phys Rev Lett. 2012;109(8).
http://dx.doi.org/10.1103/PhysRevLett.109.081801