Sin2beta from K ---> pi neutrino anti-neutrino
Apr, 1994
10 pages
Published in:
- Phys.Lett.B 333 (1994) 221-227
e-Print:
- hep-ph/9405259 [hep-ph]
Report number:
- MPI-PHT-94-19,
- TUM-T31-59-94
View in:
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Abstract:
We point out that the measurement of just the two branching fractions \linebreak and can in a theoretically clean manner determine almost independently of and . This allows to obtain an interesting relation between the CP asymmetry in B physics and the branching ratios for these two rare K decays. The recently calculated next-to-leading order QCD corrections improve the accuracy of this analysis. We find typically provided B(\kpn) and B(\klpn) are measured within accuracy. With decreasing uncertainty in and this error could be reduced to . The determination of and on the other hand is rather poor. However respectable determinations of the Wolfenstein parameter and of can be obtained.- K: rare decay
- rare decay: K
- K+: semileptonic decay
- semileptonic decay: K+
- K0(L): semileptonic decay
- semileptonic decay: K0(L)
- K: branching ratio
- CKM matrix matrix
- unitarity
- B0: nonleptonic decay
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