Aad2021_Article_MeasurementOfTheCP-violatingPh.pdf (4.72 MB)
Measurement of the CP-violating phase ?s in Bs0?J/?? decays in ATLAS at 13 TeV
Version 2 2023-06-12, 08:05
Version 1 2023-06-10, 00:52
journal contribution
posted on 2023-06-12, 08:05 authored by N L Abraham, Benedict AllbrookeBenedict Allbrooke, Lily AsquithLily Asquith, Alessandro CerriAlessandro Cerri, Antonella De SantoAntonella De Santo, Mario Grandi, Samuel Jones, Daniel Christopher Kelsey, G Lerner, F Miano, Batool Safarzadeh Samani, Fabrizio SalvatoreFabrizio Salvatore, Kate ShawKate Shaw, Mario Spina, Thomas StevensonThomas Stevenson, K Suruliz, Mark SuttonMark Sutton, Fabio Tresoldi, Fabrizio Trovato, ATLAS Collaboration, othersA measurement of the Bs0?J/?? decay parameters using 80.5fb-1 of integrated luminosity collected with the ATLAS detector from 13 Te proton–proton collisions at the LHC is presented. The measured parameters include the CP-violating phase ?s, the width difference ? G s between the Bs0 meson mass eigenstates and the average decay width G s. The values measured for the physical parameters are combined with those from 19.2fb-1 of 7 and 8 Te data, leading to the following: ?s=-0.087±0.036(stat.)±0.021(syst.)rad?Gs=0.0657±0.0043(stat.)±0.0037(syst.)ps-1Gs=0.6703±0.0014(stat.)±0.0018(syst.)ps-1Results for ?s and ? G s are also presented as 68% confidence level contours in the ?s–? G s plane. Furthermore the transversity amplitudes and corresponding strong phases are measured. ?s and ? G s measurements are in agreement with the Standard Model predictions.
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European Physical Journal CISSN
1434-6044Publisher
EDP SciencesExternal DOI
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81Page range
1-36Article number
a342Department affiliated with
- Physics and Astronomy Publications
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- Yes
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- Yes
Legacy Posted Date
2021-09-07First Open Access (FOA) Date
2021-09-07First Compliant Deposit (FCD) Date
2021-09-07Usage metrics
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