Using untagged B^0 -> D K_S to determine gamma

Details Using untagged B^0 -> D K_S to determine gamma Using untagged B^0 -> D K_S to determine gamma

2004-02-05

arxiv.org/abs/hep-ph/0402055v2

Phys.Rev. D69 (2004) 113003

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, same as published version

Scientific paper

10.1103/PhysRevD.69.113003

It is shown that the weak phase gamma=arg(-V_{ud}V^*_{ub}V_{cb}V_{cd}^*) can be determined using only untagged decays B/Bbar--> D K_S. In order to reduce the uncertainty in gamma, we suggest combining information from B^{+-}--> DK^{+-} and from untagged B^0 decays, where the D meson is observed in common decay modes. Theoretical assumptions, which may further reduce the statistical error, are also discussed.

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