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Abstract:

With an integrated luminosity of 2.47 fb-1 recorded by the ATLAS experiment at the LHC, the exclusive decays Bs0→J/ψφ and Bd0→J/ψK∗0 of B mesons produced in pp collisions at s=7 TeV are used to determine the ratio of fragmentation fractions fs/fd. From the observed Bs0→J/ψφ and Bd0→J/ψK∗0 yields, the quantity (fs/fd)[B(Bs0→J/ψφ)/B(Bd0→J/ψK∗0)] is measured to be 0.199±0.004(stat)±0.008(syst). Using a recent theory prediction for [B(Bs0→J/ψφ)/B(Bd0→J/ψK∗0)] yields (fs/fd)=0.240±0.004(stat)±0.010(syst)±0.017(th). This result is based on a new approach that provides a significant improvement of the world average. © 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:Determination of the Ratio of b -Quark Fragmentation Fractions fs /fd in pp Collisions at s =7 TeV with the ATLAS Detector
Autor:Aad, G. et al.
Este artículo contiene 2854 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 2854 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Palabras clave:Atomic physics; ATLAS detectors; ATLAS experiment; B mesons; Integrated luminosity; New approaches; Quark fragmentation; Theory predictions; Tellurium compounds
Año:2015
Volumen:115
Número:26
DOI: http://dx.doi.org/10.1103/PhysRevLett.115.262001
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_v115_n26_p_Aad

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Citas:

---------- APA ----------
(2015) . Determination of the Ratio of b -Quark Fragmentation Fractions fs /fd in pp Collisions at s =7 TeV with the ATLAS Detector. Physical Review Letters, 115(26).
http://dx.doi.org/10.1103/PhysRevLett.115.262001
---------- CHICAGO ----------
Aad, G. "Determination of the Ratio of b -Quark Fragmentation Fractions fs /fd in pp Collisions at s =7 TeV with the ATLAS Detector" . Physical Review Letters 115, no. 26 (2015).
http://dx.doi.org/10.1103/PhysRevLett.115.262001
---------- MLA ----------
Aad, G. "Determination of the Ratio of b -Quark Fragmentation Fractions fs /fd in pp Collisions at s =7 TeV with the ATLAS Detector" . Physical Review Letters, vol. 115, no. 26, 2015.
http://dx.doi.org/10.1103/PhysRevLett.115.262001
---------- VANCOUVER ----------
Aad, G. Determination of the Ratio of b -Quark Fragmentation Fractions fs /fd in pp Collisions at s =7 TeV with the ATLAS Detector. Phys Rev Lett. 2015;115(26).
http://dx.doi.org/10.1103/PhysRevLett.115.262001