Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-05-24
Phys.Rev.Lett. 85 (2000) 1807-1810
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages, RevTeX, no figures
Scientific paper
10.1103/PhysRevLett.85.1807
We describe a new method for extracting weak, CP-violating phase information, with no hadronic uncertainties, from an angular analysis of B -> V_1 V_2 decays, where V_1 and V_2 are vector mesons. The quantity $\sin^2 (2\beta + \gamma)$ can be cleanly obtained from the study of decays such as B_d^0(t) -> D^{*\pm} \rho^\mp, D^{*\pm} a_1^{\mp}, D^{*0} K^{*0}, etc. Similarly, one can use B_s^0(t) -> D_s^{*\pm} K^{*\mp} to extract $\sin^2 \gamma$. There are no penguin contributions to these decays. It is possible that $\sin^2 (2\beta + \gamma)$ will be the second function of CP phases, after $\sin 2\beta$, to be measured at B-factories.
London David
Sinha Nita
Sinha Rahul
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