542 research outputs found
CP-Violation in B_{q} Decays and Final State Strong Phases
Using the unitarity, SU(2) and -invariance of hadronic interactions, the
bounds on final state phases are derived. It is shown that values obtained for
the final state phases relevant for the direct CP-asymmetries are compatiable with experimental values for
these asymmetries. For the decays
described by two independent single amplitudes
and with differnt weak phases (0 and ) it is
argued that the -invariance of hadronic interactions implies the equality of
the final state phase and . This in
turn implies, the CP-asymmetry is determined by weak
phase ( only whereas Assuming
factorization for tree graphs, it is shown that the form
factors are in excellent agreement with heavy quark effective theory. From the
experimental value for the bound is obtained and (\frac{S_{+}+S_{-}}{2%})
_{D_{S}^{\ast -}K^{+}}\approx -(0.41\pm 0.08)\sin \gamma is predicted. For
the decays described by the amplitudes such as
and where these amplitudes are given
by tree and penguin diagrams with differnt weak phases, it is shown that in the
limit and Comment: 20 Pages, 1 Figure, Appeared in PR
Final state phases in B -> D\pi, \bar{D}\pi decays and CP-asymmetry
Final state phases \delta_f and \delta_f' in B-> D pi, barD pi decays are
shown to be equal i.e. \delta =\delta_f-\delta_f' = 0. Thus CP-violating
asymmetry A(t) is independent of final state phases. The estimate for the
phases \delta_f and \delta_f' is also given.Comment: 6 pages, no figur
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