Lifetime difference and CP-violating phase in the Bs0 system.

First study of the CP-violating phase and decay-width difference in Bs0→ψ(2S)φ decays

Article history: Received 17 August 2016 Received in revised form 5 September 2016 Accepted 15 September 2016 Available online 20 September 2016 Editor: M. Doser A time-dependent angular analysis of Bs →ψ(2S)φ decays is performed using data recorded by the LHCb experiment. The data set corresponds to an integrated luminosity of 3.0 fb−1 collected during Run 1 of the LHC. The CP-violating phase ...

Aaij, R. et al. (2013) Measurement of CP violation and the Bs0 meson decay width difference with Bs0→J/ψK+K- and Bs0→J/ψπ+π- decays

ar X iv : 0 71 0 . 17 89 v 1 [ he p - ex ] 9 O ct 2 00 7 Lifetime Difference and CP Asymmetry in the B s → J / ψφ decay

The Bs meson is an interesting particle to study because a sizable mixing induced CP violation in the Bs − B̄s system would be an indication for physics beyond the Standard Model. In this paper we present a measurement of the lifetime difference ∆Γ between the Bs mass eigenstates and the CP violating phase in the decay Bs → J/ψφ. In 1.7 fb −1 of data collected with the CDF II detector at the Tev...

The B s width difference beyond the Standard Model Yuval

The Standard Model predicts a large width difference in the Bs system. New physics can contribute significantly to the mass difference. If this contribution is CP violating, this will always result in a reduction of the width difference. The analyses of measurements of the width difference using Bs decays into CP eigenstates have to be modified in the presence of new physics. We discuss how the...

The Final Measurement of ǫ′/ǫ from KTeV

We present precise measurements of CP and CPT symmetry based on the full dataset of K → ππ decays collected by the KTeV experiment at FNAL. We measure the direct CP violation parameterRe(ǫ/ǫ) = (19.2 ±2.1) × 10. We find the KL-KS mass difference ∆m = (5265 ± 10)×10 6 h̄s and the KS lifetime τS = (89.62 ± 0.05)×10 s. We test CPT symmetry by finding the phase of the indirect CP violation parameter...

Ckm03 Sin(2β): Status and Prospects

An overview of the observation of CP violation in the neutral B system, and the measurements of the CP-violating asymmetry sin2β with B → charmonium K 0 S ,L events, performed by the BABAR and Belle experiments at the SLAC and KEK B factories is given. In addition, the measurements of sin2β with several other modes are described, including B → φK 0 S , which, as the leading contribution is from...