Observed Asymmetry in $\bar{p}p \to π^+ K^- K^0 / π^- K^+ \bar{K}^0$ and Relation to Reciprocity

Details Observed Asymmetry in $\bar{p}p \to π^+ K^- K^0 / π^- K^+ \bar{K}^0$ and Relation to Reciprocity Observed Asymmetry in $\bar{p}p \to π^+ K^- K^0 / π^- K^+ \bar{K}^0$ and Relation to Reciprocity

1999-01-18

arxiv.org/abs/hep-ph/9901340v1

Phys.Lett. B459 (1999) 335-340

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, Latex

Scientific paper

10.1016/S0370-2693(99)00676-0

The charge-asymmetry observed in a recent CPLEAR experiment was interpreted by the authors as a direct observation of T-noninvariance. While this is the simplest and most natural inference, and the observed effect agrees in sign and magnitude with theoretical expectation, adherents of T-invariance may argue that other interpretations are also possible. If K^0 and \bar{K}^0 are produced equally in \bar{p} p annihilation, and T-invariance is assumed to hold, the asymmetry observed in CPLEAR must be attributed to TCP-noninvariance of kaon beta-decays. If that were the case, the charge-asymmetry in K_S^0 \to \pi l\nu decays should be three times larger than the one observed for K_L^0 decays.

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