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Abstract:

The χ b (nP) quarkonium states are produced in proton-proton collisions at the Large Hadron Collider at √s=7TeV and recorded by the ATLAS detector. Using a data sample corresponding to an integrated luminosity of 4.4fb - 1, these states are reconstructed through their radiative decays to Υ(1S,2S) with Υ→μ + μ - . In addition to the mass peaks corresponding to the decay modes χ b (1P,2P)→Υ(1S)γ, a new structure centered at a mass of 10.530±0.005(stat)±0.009(syst)GeV is also observed, in both the Υ(1S)γ and Υ(2S)γ decay modes. This structure is interpreted as the χ b (3P) system. © 2012 CERN.

Registro:

Documento: Artículo
Título:Observation of a new χ b state in radiative transitions to Y(1S) and Y(2S) at ATLAS
Autor:Aad, G. et al.
Este artículo contiene 3039 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 3039 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Palabras clave:ATLAS detectors; Data sample; Decay mode; Integrated luminosity; Large Hadron Collider; Proton proton collisions; Quarkonium; Radiative decay; Radiative transitions; Radioactivity; Tellurium compounds; High energy physics
Año:2012
Volumen:108
Número:15
DOI: http://dx.doi.org/10.1103/PhysRevLett.108.152001
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_v108_n15_p_Aad

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Citas:

---------- APA ----------
(2012) . Observation of a new χ b state in radiative transitions to Y(1S) and Y(2S) at ATLAS. Physical Review Letters, 108(15).
http://dx.doi.org/10.1103/PhysRevLett.108.152001
---------- CHICAGO ----------
Aad, G. "Observation of a new χ b state in radiative transitions to Y(1S) and Y(2S) at ATLAS" . Physical Review Letters 108, no. 15 (2012).
http://dx.doi.org/10.1103/PhysRevLett.108.152001
---------- MLA ----------
Aad, G. "Observation of a new χ b state in radiative transitions to Y(1S) and Y(2S) at ATLAS" . Physical Review Letters, vol. 108, no. 15, 2012.
http://dx.doi.org/10.1103/PhysRevLett.108.152001
---------- VANCOUVER ----------
Aad, G. Observation of a new χ b state in radiative transitions to Y(1S) and Y(2S) at ATLAS. Phys Rev Lett. 2012;108(15).
http://dx.doi.org/10.1103/PhysRevLett.108.152001