Abstract
CP asymmetries in B decays into final CP eigenstates are in many cases theoretically clean. In particular, they do not depend on the values of hadronic parameters. The sign of the asymmetries, however, does depend on the sign of the BB parameter. Furthermore, the information from εK that all angles of the unitarity triangles lie in the range {0, π} depends on the sign of the BK parameter. Consequently, in the (unlikely) case that the vacuum insertion approximation is such a poor approximation that either BB or BK is negative, the sign of CP asymmetries in neutral B decays will be opposite to the standard predictions. Various subtleties concerning the role of K - K̄ mixing in the case of final states with a single KS or KL, such as the B → ψKS decay, are clarified.
Original language | English |
---|---|
Pages (from-to) | 90-96 |
Number of pages | 7 |
Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
Volume | 415 |
Issue number | 1 |
DOIs | |
State | Published - 4 Dec 1997 |
Externally published | Yes |
Bibliographical note
Funding Information:We thank Isi Dunietz for useful discussions. B.K. would like to thank Guido Altarelli for the excellent hospitality of CERN, and Leo Stodolsky for that of the Max Planck Institut. Y.G. is supported by the Department of Energy under contract DE-AC03- 76SF00515. Y.N. is supportedi n part by the United States-Israel Binational Science Foundation (BSF), by the Israel Science Foundation, and by the Minerva Foundation (Munich).
Funding
We thank Isi Dunietz for useful discussions. B.K. would like to thank Guido Altarelli for the excellent hospitality of CERN, and Leo Stodolsky for that of the Max Planck Institut. Y.G. is supported by the Department of Energy under contract DE-AC03- 76SF00515. Y.N. is supportedi n part by the United States-Israel Binational Science Foundation (BSF), by the Israel Science Foundation, and by the Minerva Foundation (Munich).
Funders | Funder number |
---|---|
U.S. Department of Energy | DE-AC03- 76SF00515 |
Bonfils-Stanton Foundation | |
Minerva Foundation | |
United States-Israel Binational Science Foundation | |
Israel Science Foundation |