arXiv subjects
Publications and source records attributed to Zhengtao Wei.
We present an analysis of CPT violation in $B\to J/ψK$ decays. A method of kaon regeneration is proposed to increase the $K_{S(L)}$ interference effects. With the time evolution of both neutral B and K mesons, we show that it is possible to determine the CPT violating parameter in $B^0-\bar{B^0}$ mixing or constrain it.
T violation should be tested independently of CP violation. Besides K system, B meson decays provide another good place to study T violation. In the Standard Model, T violation in $B^0 \rightleftharpoons \bar{B^0}$ oscillation is expected to be small. The angular distribution of $B\to VV$ decay permits one to extract the T-odd correlation. In the absence of final state interaction, T violation in $B\to J/ψ(l^+ l^-) K^*(K_Sπ^0)$ decay can reach $4-7%$ via $B^0-\bar{B^0}$ mixing.