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Abstract:

A search for excited states of the Bc± meson is performed using 4.9 fb-1 of 7 TeV and 19.2 fb-1 of 8 TeV pp collision data collected by the ATLAS experiment at the LHC. A new state is observed through its hadronic transition to the ground state, with the latter detected in the decay Bc±→J/ψπ±. The state appears in the m(Bc±π+π-)-m(Bc±)-2m(π±) mass difference distribution with a significance of 5.2 standard deviations. The mass of the observed state is 6842±4±5 MeV, where the first error is statistical and the second is systematic. The mass and decay of this state are consistent with expectations for the second S-wave state of the Bc± meson, Bc±(2S). © 2015 CERN. © 2015 CERN, for the ATLAS Collaboration. Published by the American Physical Society under the terms of the »http://creativecommons.org/licenses/by/3.0/» Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

Registro:

Documento: Artículo
Título:Observation of an Excited Bc± Meson State with the ATLAS Detector
Autor:Aad, G. et al.
Este artículo contiene 2884 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 2884 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Palabras clave:Bosons; Ground state; Hadrons; Shear waves; Tellurium compounds; ATLAS detectors; ATLAS experiment; Mass difference; Standard deviation; Wave state; Excited states
Año:2014
Volumen:113
Número:21
DOI: http://dx.doi.org/10.1103/PhysRevLett.113.212004
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_v113_n21_p_Aad

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Citas:

---------- APA ----------
(2014) . Observation of an Excited Bc± Meson State with the ATLAS Detector. Physical Review Letters, 113(21).
http://dx.doi.org/10.1103/PhysRevLett.113.212004
---------- CHICAGO ----------
Aad, G. "Observation of an Excited Bc± Meson State with the ATLAS Detector" . Physical Review Letters 113, no. 21 (2014).
http://dx.doi.org/10.1103/PhysRevLett.113.212004
---------- MLA ----------
Aad, G. "Observation of an Excited Bc± Meson State with the ATLAS Detector" . Physical Review Letters, vol. 113, no. 21, 2014.
http://dx.doi.org/10.1103/PhysRevLett.113.212004
---------- VANCOUVER ----------
Aad, G. Observation of an Excited Bc± Meson State with the ATLAS Detector. Phys Rev Lett. 2014;113(21).
http://dx.doi.org/10.1103/PhysRevLett.113.212004