Test of $CPT$ Symmetry in $CP$-violating $B$ Decays

Details Test of $CPT$ Symmetry in $CP$-violating $B$ Decays Test of $CPT$ Symmetry in $CP$-violating $B$ Decays

1994-07-13

arxiv.org/abs/hep-ph/9407289v2

Phys.Rev.D50:2957-2961,1994

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 Latex pages; LMU-02/94 (shortened version)

Scientific paper

10.1103/PhysRevD.50.R2957

Considering that the existing experimental limit for $CPT$ violation is still poor, we explore various possible ways to test $CPT$ symmetry in $CP$-violating $B$ decays at $e^{+}e^{-}$ $B$ factories. We find that it is difficult to distinguish between the effect of direct $CP$ violation and that of $CPT$ violation in the time-integrated measurements of neutral $B$ decays to $CP$ eigenstates such as $\psi K_{S}$ and $\pi^{+}\pi^{-}$. Instead, a cleaner signal of small $CPT$ violation may appear in the time-integrated $CP$ asymmetries for a few non-$CP$-eigenstate channels, e.g., $B^{0}_{d}/\bar{B}^{0}_{d}\rightarrow D^{\pm}\pi^{\mp}$ and $\stackrel{(-)}{D}$$^{(*)0}K_{S}$. The time-dependent measurements of $CP$ asymmetries are available, in principle, to limit the size of $CPT$-violating effects in neutral $B$-meson decays.

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