Measurement of the CP-violating phase ${\varphi }_s$ in ${\bar{B}}_s^0\to D_s^{+}{D}_s^{-}$ decays

Abstract

We present a measurement of the $CP$-violating weak mixing phase ${\varphi }_s$ using the decay ${\bar{B}}_s^0\to D_s^{+}{D}_s^{-}$ in a data sample corresponding to $3.0$ fb${}^{-1}$ of integrated luminosity collected with the LHCb detector in $pp$ collisions at centre-of-mass energies of 7 and 8 TeV. An analysis of the time evolution of the system, which does not constrain $|\lambda |=1$ to allow for the presence of $CP$ violation in decay, yields ${\varphi }_s=0.02\pm 0.17$ (stat) $\pm 0.02$ (syst) rad, $|\lambda |=0.91_{-0.15}^{+0.18}$ (stat) $\pm 0.02$ (syst). This result is consistent with the Standard Model expectation.

References in corpus (11)

• PYTHIA 6.4 Physics and Manual
• Big-Bang Nucleosynthesis
• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of summer 2016
• Measurement of $\boldmath {B_s^0}$ mixing parameters from the flavor-tagged decay
• Precision Physics with B^0_s -> J/psi phi at the LHC: The Quest for New Physics
• Measurement of the CP-violating phase ${\varphi }_s$ in ${\overline{B}}_s^0\to J/\psi {\pi }^{+}{\pi }^{-}$ decays
• Opposite-side flavour tagging of B mesons at the LHCb experiment
• sFit: a method for background subtraction in maximum likelihood fit
• Measurement of the B0bar-B0 and Bsbar-Bs production asymmetries in pp collisions at sqrt(s)=7 TeV
• Exploring CP Violation and Penguin Effects through $B_d^0\to D^{+}{D}^{-}$ and $B_s^0\to D_s^{+}{D}_s^{-}$
• Measurement of CP asymmetry in $B_s^0\to D_s^{\mp }{K}^{\pm }$ decays

Cited by in corpus (28)

• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of summer 2016
• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2018
• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2021
• Precision measurement of $CP$ violation in $B_s^0\to J/\psi K^{+}{K}^{-}$ decays
• Measurement of the $CP$-violating phase ${\varphi }_s$ in $B_s^0\to J/\psi \varphi$ decays in ATLAS at 13 TeV
• Updated measurement of time-dependent $CP$-violating observables in $B_s^0\to J/\psi K^{+}{K}^{-}$ decays
• Resonances and $CP$ violation in $B_s^0$ and ${\overline{B}}_s^0\to J/\psi K^{+}{K}^{-}$ decays in the mass region above the $\varphi (1020)$
• Measurement of the $CP$-violating phase ${\varphi }_{\mathrm{s}}$ in the B${}_{\mathrm{s}}^0$ $\to$ J$/\psi \varphi$(1020) $\to$ ${\mu }^{+}{\mu }^{-}$K${}^{+}$K${}^{-}$ channel in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• $B$ flavour tagging using charm decays at the LHCb experiment
• CP violation in the B system
• Standard Model Predictions and New Physics Sensitivity in B->DD Decays
• Heavy Flavour Physics and CP Violation at LHCb: a Ten-Year Review
• A new algorithm for identifying the flavour of $B_s^0$ mesons at LHCb
• Anatomy of $B\to D\bar{D}$ Decays
• New algorithms for identifying the flavour of $B^0$ mesons using pions and protons
• Measurement of $CP$ violation in $B^0\to D^{+}{D}^{-}$ decays
• Observation of the decay $B_s^0\to {\eta }_c\varphi$ and evidence for $B_s^0\to {\eta }_c{\pi }^{+}{\pi }^{-}$
• Improved measurement of $CP$ violation parameters in $B_s^0\to J/\psi K^{+}{K}^{-}$ decays in the vicinity of the $\varphi (1020)$ resonance
• Novel method for the identification of the production flavor of neutral charmed mesons
• $B_s^0$-${\bar{B}}_s^0$ Oscillations as a New Tool to Explore CP Violation in $D_s^{\pm }$ Decays
• Observation of the $B_s^0\to D^{\ast \pm }{D}^{\mp }$ decay
• Experimental Status of the CKM Matrix
• Prospect for measurement of the CP-violating phase ${\varphi }_s$ in the $B_s\to J/\psi \varphi$ channel at a future Z factory
• CP violation and CKM studies (and first LHCb Run II results)
• First evidence for mixing-induced $CP$ violation in B${}_{\mathrm{s}}^0$ $\to$ J/$\psi \varphi$(1020) decays in pp collisions at $\sqrt{s}=$ 13 TeV
• CKM studies from b physics at hadron machines
• Flavour Physics at LHCb -- 50 years of the KM paradigm
• Search for $CP$ violation in $B_s^0$ mixing at LHCb