科研之友
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摘要
In the framework of factorization, based on the first-order of isospin violation, we study direct C P violation in the decay of (B) over bar (0) -> rho(0)(omega)rho(0)(omega) -> pi(+)pi(-)pi(+)pi(-) including the effect of rho-omega mixing. The C P violation depends strongly on Cabibbo-Kobayashi-Maskawa (CKM) matrix elements and the effective parameter, N-c. Recently, the experimental data for the branching ratios of (B) over bar (0) -> rho(0)rho(0) are accurate and we can give the strong constraint on the range of Nc. We find that the C P violating asymmetry is large and ranges from -82% to -98% via rho-omega mixing mechanism when the invariant mass of the pi(+)pi(-) pair is in the vicinity of the omega resonance. We also discuss the possibility to observe the predicted C P violating asymmetries at the LHC.
