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Abstract / Description of output
A measurement of the B0s → J/ψφ decayparameters using 80.5 fb−1 of integrated luminosity collected with the ATLAS detector from 13 TeV proton–proton collisions at the LHC is presented. The measured parameters include the CP-violating phase φs , the width difference s between the B0
s meson mass eigenstates and the average decay width s . The values measured for the physical parameters are combined with those from 19.2 fb−1 of 7 and 8 TeV data, leading to the following: φs = −0.087 ± 0.036 (stat.) ± 0.021 (syst.) rad s = 0.0657 ± 0.0043 (stat.) ± 0.0037 (syst.) ps−1
s = 0.6703 ± 0.0014 (stat.) ± 0.0018 (syst.) ps−1
Results for φs and s are also presented as 68% confi-
dence level contours in the φs –s plane. Furthermore the
transversity amplitudes and corresponding strong phases are
measured. φs and s measurements are in agreement with
the Standard Model predictions.
s meson mass eigenstates and the average decay width s . The values measured for the physical parameters are combined with those from 19.2 fb−1 of 7 and 8 TeV data, leading to the following: φs = −0.087 ± 0.036 (stat.) ± 0.021 (syst.) rad s = 0.0657 ± 0.0043 (stat.) ± 0.0037 (syst.) ps−1
s = 0.6703 ± 0.0014 (stat.) ± 0.0018 (syst.) ps−1
Results for φs and s are also presented as 68% confi-
dence level contours in the φs –s plane. Furthermore the
transversity amplitudes and corresponding strong phases are
measured. φs and s measurements are in agreement with
the Standard Model predictions.
Original language | English |
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Article number | 342 |
Pages (from-to) | 1-36 |
Number of pages | 36 |
Journal | The European Physical Journal C |
Volume | 81 |
Issue number | 4 |
DOIs | |
Publication status | Published - 21 Apr 2021 |