Time-dependent measurements of the decays Bs0(t) → φKs and Bd0(t) → K0K0 can be used to compare the weak phases of Bd0-Bd0 mixing and the t-quark contribution to the b → d penguin. Since these two phases are equal in the standard model, any discrepancy would be a sign of new physics, specifically in the b → d flavour-changing neutral current (FCNC). The method can be applied to other pairs of decays, such as Bs0(t) → J/ψKs and Bd0(t)→ J/ψπ0.
|Number of pages||9|
|Journal||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|Publication status||Published - 1999|
Bibliographical noteFunding Information:
C.S.K. wishes to acknowledge the financial support of 1997-sughak program of Korean Research Foundation. The work of D.L. was financially supported by NSERC of Canada and FCAR du Québec. The work of T.Y. was supported in part by Grant-in-Aid for Scientific Research from the Ministry of Education, Science and Culture of Japan and in part by JSPS Research Fellowships for Young Scientists.
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics