Study of time-dependent CP violation in B0 → J/ψπ0 decays 论文
2004Infoscience (Ecole Polytechnique Fédérale de Lausanne)引用 407
Particle physics theoretical and experimental studiesNeutrino Physics ResearchComputational Physics and Python Applications
摘要
The CP asymmetry parameters in the decay B0(B̄0) → J/ψπ0, were described. The measurement of the CP asymmetry parameters was based on a 140 fb-1 data sample, which was accumulated at the γ(4S) resonance by the Belle detector at the KEKB asymmetric-energy e+e- collider. It was observed that one neutral B meson flavor was identified by its decay products. The results show values of the CP-violating parameters were found to be of the order of S J/ψπ o = -0.72∓0.42(stat)∓0.09(syst) and AJ/ψπ 0 = -0.01∓0.29(stat)∓0. 03(syst).