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

The, ATLAS collaboration
•
Aad, G.
•
Abbott, B.
altro
GIORDANI, Mario
2016
  • journal article

Periodico
JOURNAL OF HIGH ENERGY PHYSICS
Abstract
A measurement of the Bs0decay parameters in the Bs0→ J/ψφ channel using an integrated luminosity of 14.3 fb−1collected by the ATLAS detector from 8 TeV pp collisions at the LHC is presented. The measured parameters include the CP -violating phase φs, the decay width Γs and the width difference between the mass eigenstates ΔΓs. The values measured for the physical parameters are statistically combined with those from 4.9 fb−1of 7 TeV data, leading to the following: Φs = -0.090 ± 0.078 (stat.) ± (syst.) rad Δ Γs = 0.085 ± 0.011 (stat.) ± 0.007 (syst.) Ps-1 Δ Γs = 0.675 ± 0.003 (stat.) ± 0.03 (syst.) Ps-1 In the analysis the parameter ΔΓs is constrained to be positive. Results for φs and ΔΓs are also presented as 68% and 95% likelihood contours in the φs-ΔΓs 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.[
DOI
10.1007/JHEP08(2016)147
WOS
WOS:000391784400001
Archivio
http://hdl.handle.net/11390/1096137
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84986903148
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84986903148&partnerID=40&md5=93c08a26cd32447060a954fb86d659a6
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Scopus© citazioni
30
Data di acquisizione
Jun 15, 2022
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Web of Science© citazioni
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Data di acquisizione
Mar 4, 2024
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Data di acquisizione
Apr 19, 2024
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