منابع مشابه
Evidence for the suppressed decay B(-)→DK(-), D→K(+)π(-).
The suppressed decay chain B(-)→DK(-), D→K(+)π(-), where D indicates a D(¯)(0) or D(0) state, provides important information on the CP-violating angle ϕ(3). We measure the ratio R(DK) of the decay rates to the favored mode B(-)→DK(-), D→K(-)π(+) to be R(DK)=[1.63(-0.41)(+0.44)(stat)(-0.13)(+0.07)(syst)]×10(-2), which indicates the first evidence of the signal with a significance of 4.1σ. We als...
متن کاملDecay-time Asymmetries at the B-factories
One might look for such a violation in the neutral mesons Bd and Bs, and in the charged ones Bu. Here I shall focus mainly on the neutral system Bd − B̄d, and sometimes refer to it as B − B̄. But before I discuss some of the asymmetries and the importance of their measurement, let me say a few words about the “Asymmetric B-Factories”, mainly for pedagogical reasons. Why Factory?: Almost all the h...
متن کاملWeak Phase Γ from Color - Allowed B → Dk Rates
The ratios of partial rates for charged B decays to the recently observed DK mode and to the two DCPK final states (CP = ±) are shown to constrain the weak phase γ ≡ Arg(V ∗ ub). The smaller color-suppressed rate, providing further information about the phase, can be determined from these rates alone. Present estimates suggest that, while the first constraints can already be obtained in a high ...
متن کاملBranching ratios and CP asymmetries in the decay B-->VV.
We carry out a systematic study of branching ratios, angular correlations, and CP asymmetries in the decay of neutral and charged B mesons to final states consisting of two vector mesons. The renormaiization-group-improved effective Hamiltonian is evaluated in the vacuum insertion (factorization) approximation. Okubo-Zweig-Iizuka suppressed aud annihilation terms are neglected. Current matrix e...
متن کاملB-Decay CP Asymmetries, Discrete Ambiguities and New Physics
The first measurements of CP violation in the B system will likely probe sin 2α, sin 2β and cos 2γ. Assuming that the CP angles α, β and γ are the interior angles of the unitarity triangle, we show that these measurements determine the angle set (α, β, γ) except for a twofold discrete ambiguity. If one allows for the possibility of new physics, the presence of this discrete ambiguity can make i...
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ژورنال
عنوان ژورنال: Il Nuovo Cimento A
سال: 1996
ISSN: 0369-3546,1826-9869
DOI: 10.1007/bf02731137