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Abstract:

A search is reported for the pair production of a new quark b′ with at least one b′ decaying to a Z boson and a bottom quark. The data, corresponding to 2.0fb - 1 of integrated luminosity, were collected from pp collisions at √s=7TeV with the ATLAS detector at the CERN Large Hadron Collider. Using events with a b-tagged jet and a Z boson reconstructed from opposite-charge electrons, the mass distribution of large transverse momentum b′ candidates is tested for an enhancement. No evidence for a b′ signal is detected in the observed mass distribution, resulting in the exclusion at a 95% confidence level of b′ quarks with masses m b′ <400GeV that decay entirely via b′→Z+b. In the case of a vectorlike singlet b′ mixing solely with the third standard model generation, masses m b′ <358GeV are excluded. © 2012 CERN.

Registro:

Documento: Artículo
Título:Search for pair production of a new b′ quark that decays into a Z boson and a bottom quark with the ATLAS detector
Autor:Aad, G. et al.
Este artículo contiene 3040 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 3040 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Palabras clave:ATLAS detectors; Bottom quarks; Confidence levels; Integrated luminosity; Large Hadron Collider; Mass distribution; Pair production; Standard model; Transverse momenta; Z Bosons; Bosons; Photons; Tellurium compounds; High energy physics
Año:2012
Volumen:109
Número:7
DOI: http://dx.doi.org/10.1103/PhysRevLett.109.071801
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_n7_p_Aad

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Citas:

---------- APA ----------
(2012) . Search for pair production of a new b′ quark that decays into a Z boson and a bottom quark with the ATLAS detector. Physical Review Letters, 109(7).
http://dx.doi.org/10.1103/PhysRevLett.109.071801
---------- CHICAGO ----------
Aad, G. "Search for pair production of a new b′ quark that decays into a Z boson and a bottom quark with the ATLAS detector" . Physical Review Letters 109, no. 7 (2012).
http://dx.doi.org/10.1103/PhysRevLett.109.071801
---------- MLA ----------
Aad, G. "Search for pair production of a new b′ quark that decays into a Z boson and a bottom quark with the ATLAS detector" . Physical Review Letters, vol. 109, no. 7, 2012.
http://dx.doi.org/10.1103/PhysRevLett.109.071801
---------- VANCOUVER ----------
Aad, G. Search for pair production of a new b′ quark that decays into a Z boson and a bottom quark with the ATLAS detector. Phys Rev Lett. 2012;109(7).
http://dx.doi.org/10.1103/PhysRevLett.109.071801