Measurement of the CP-violating phase ϕ<sub>s</sub> and the B<sup>0</sup><sub>s</sub> meson decay width difference with B<sup>0</sup><sub>s</sub>→ J/ψϕ decays in ATLAS

A measurement of the B<sup>0</sup><sub>s</sub> decay parameters in the B<sup>0</sup><sub>s</sub>→ J/ψϕ channel using an integrated luminosity of 14.3 fb<sup>-1</sup> collected by the ATLAS detector from 8 TeV pp collisions at the LHC is pre...

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Autores principales: Alconada Verzini, María Josefina, Alonso, Francisco, Arduh, Francisco Anuar, Dova, María Teresa, Monticelli, Fernando Gabriel, Wahlberg, Hernán Pablo, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2016
Materias:
Ciencias Exactas
Física
B physics
CP violation
Flavor physics
Hadron-Hadron scattering (experiments)
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/87011
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-87011
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Física
B physics
CP violation
Flavor physics
Hadron-Hadron scattering (experiments)
spellingShingle Ciencias Exactas
Física
B physics
CP violation
Flavor physics
Hadron-Hadron scattering (experiments)
Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
Measurement of the CP-violating phase ϕ<sub>s</sub> and the B<sup>0</sup><sub>s</sub> meson decay width difference with B<sup>0</sup><sub>s</sub>→ J/ψϕ decays in ATLAS
topic_facet Ciencias Exactas
Física
B physics
CP violation
Flavor physics
Hadron-Hadron scattering (experiments)
description A measurement of the B<sup>0</sup><sub>s</sub> decay parameters in the B<sup>0</sup><sub>s</sub>→ J/ψϕ channel using an integrated luminosity of 14.3 fb<sup>-1</sup> collected by the ATLAS detector from 8 TeV pp collisions at the LHC is presented. The measured parameters include the CP-violating phase ϕ<sub>s</sub>, the decay width Γ<sub>s</sub> and the width difference between the mass eigenstates ΔΓ<sub>s</sub>. The values measured for the physical parameters are statistically combined with those from 4.9 fb<sup>-1</sup> of 7 TeV data, leading to the following: Φ<sub>s</sub> = -0.090 ± 0.078 (stat.) ± (syst.) rad ΔΓ<sub>s</sub> = 0.085 ± 0.011 (stat.) ± 0.007 (syst.) ps<sup>-1</sup> Γ<sub>s</sub> = 0.675 ± 0.003 (stat.) ± 0.03 (syst.) ps<sup>-1</sup> In the analysis the parameter ΔΓ<sub>s</sub> is constrained to be positive. Results for ϕ<sub>s</sub> and ΔΓ<sub>s</sub> are also presented as 68% and 95% likelihood contours in the ϕ<sub>s</sub>-ΔΓ<sub>s</sub> plane. Also measured in this decay channel are the transversity amplitudes and corresponding strong phases. All measurements are in agreement with the Standard Model predictions.
format Articulo
Articulo
author Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_facet Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_sort Alconada Verzini, María Josefina
title Measurement of the CP-violating phase ϕ<sub>s</sub> and the B<sup>0</sup><sub>s</sub> meson decay width difference with B<sup>0</sup><sub>s</sub>→ J/ψϕ decays in ATLAS
title_short Measurement of the CP-violating phase ϕ<sub>s</sub> and the B<sup>0</sup><sub>s</sub> meson decay width difference with B<sup>0</sup><sub>s</sub>→ J/ψϕ decays in ATLAS
title_full Measurement of the CP-violating phase ϕ<sub>s</sub> and the B<sup>0</sup><sub>s</sub> meson decay width difference with B<sup>0</sup><sub>s</sub>→ J/ψϕ decays in ATLAS
title_fullStr Measurement of the CP-violating phase ϕ<sub>s</sub> and the B<sup>0</sup><sub>s</sub> meson decay width difference with B<sup>0</sup><sub>s</sub>→ J/ψϕ decays in ATLAS
title_full_unstemmed Measurement of the CP-violating phase ϕ<sub>s</sub> and the B<sup>0</sup><sub>s</sub> meson decay width difference with B<sup>0</sup><sub>s</sub>→ J/ψϕ decays in ATLAS
title_sort measurement of the cp-violating phase ϕ<sub>s</sub> and the b<sup>0</sup><sub>s</sub> meson decay width difference with b<sup>0</sup><sub>s</sub>→ j/ψϕ decays in atlas
publishDate 2016
url http://sedici.unlp.edu.ar/handle/10915/87011
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AT arduhfranciscoanuar measurementofthecpviolatingphasephsubssubandthebsup0supsubssubmesondecaywidthdifferencewithbsup0supsubssubjpsphdecaysinatlas
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bdutipo_str Repositorios
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