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Flavor tagged time-dependent angular analysis of theBs0→J/ψφdecay and extraction ofΔΓsand the weak phaseφsin ATLAS

Aad, G.
•
Abajyan, T.
•
Abbott, B.
altro
GIORDANI, Mario
2014
  • journal article

Periodico
PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY
Abstract
A measurement of the Bs0→J/ψφ decay parameters, updated to include flavor tagging is reported using 4.9fb-1 of integrated luminosity collected by the ATLAS detector from s=7TeV pp collisions recorded in 2011 at the LHC. The values measured for the physical parameters are φs=0.12±0.25(stat)±0.05(syst)radΔΓs=0.053±0.021(stat)±0.010(syst)ps-1Γs=0.677±0.007(stat)±0.004(syst)ps-1|A (0)|2=0.220±0.008(stat)±0.009(syst)|A0(0)|2=0.529±0.006(stat)±0.012(syst)δ=3.89±0.47(stat)±0.11(syst)radwhere the parameter ΔΓs is constrained to be positive. The S-wave contribution was measured and found to be compatible with zero. Results for φs and ΔΓs are also presented as 68% and 95% likelihood contours, which show agreement with the Standard Model expectations.
DOI
10.1103/PhysRevD.90.052007
WOS
WOS:000342147500002
Archivio
http://hdl.handle.net/11390/1109889
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84907495165
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metadata only access
Scopus© citazioni
44
Data di acquisizione
Jun 7, 2022
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Web of Science© citazioni
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Data di acquisizione
Mar 28, 2024
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Data di acquisizione
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