CERN Accelerating science

Article
Report number arXiv:1601.03297 ; CERN-PH-EP-2015-166 ; CERN-PH-EP-2015-166
Title Measurement of the CP-violating phase ϕs and the Bs0 meson decay width difference with Bs0J/ψϕ decays in ATLAS
Related titleMeasurement of the CP-violating phase ϕs and the Bs0 meson decay width difference with Bs0J/ψϕ decays in ATLAS
Author(s) ATLAS Collaboration  顯示全部 2857 名作者
Publication 2016-08-24
Imprint 13 Jan 2016
Number of pages 43
Note 27 pages plus author list (44 pages total), 10 figures, 8 tables, published version, all figures and tables are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/BPHY-2014-03/
In: JHEP 08 (2016) 147
DOI 10.1007/JHEP08(2016)147
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; ATLAS
Free keywords flavor physics ; B physics ; CP violation ; experimental results
Abstract A measurement of the Bs0 decay parameters in the Bs0J/ψϕ channel using an integrated luminosity of 14.3 fb1 collected 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 fb1 of 7 TeV data, leading to the following: ϕs=0.090±0.078(stat.)±0.041(syst.)rad ΔΓs=0.085±0.011(stat.)±0.007(syst.)ps1 Γs=0.675±0.003(stat.)±0.003(syst.)ps1. 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.
Copyright/License preprint: © 2015-2025 CERN (License: CC-BY-4.0)
publication: © 2016-2025 CERN (License: CC-BY-4.0), sponsored by SCOAP³

Corresponding record in: Inspire
Email contact: a_ciocio@lbl.gov


 記錄創建於2016-01-13,最後更新在2024-11-14


Article from SCOAP3:
scoap3-fulltext - Download fulltextPDF
scoap - Download fulltextPDF
Springer Open Access article:
Download fulltextPDF
全文:
Download fulltextPDF
External link:
Download fulltextFigures, tables and other information
  • Send to ScienceWise.info