CPviolation in quasi-inclusiveB→K(*)

Abstract

We consider the possibility of observing CP violation in quasi-inclusive decays of the type B − → K − X, B − → K * − X,B 0 → K − X andB 0 → K * − X, where X does not contain strange quarks. We present estimates of rates and asymmetries for these decays in the Standard Model and comment on the experimental feasibility of observing CP violation in these decays at future B factories. We find the rate asymmetries can be quite sizeable. Observation of such asymmetries could be used to rule out the superweak model of CP violation.

Penguin operators in nonresonantB−→MM¯π−Fajfer1, Oakes2, Pham3 1999Phys. Rev. D411450View full textAdd to dashboardCite

“…We first analyze the contributions coming from the O 4,6 penguin operators [8,12], since their effective Wilson coefficients are the largest. We then determine the dependence on the Dalitz plot variables.…”

“…Motivated by the need to understand whether the nonresonant decay amplitudes for B − → MM π − (M = π + , K + ) involve significant effects due to the penguin operators we have investigated the contributions coming from the penguin operators [7] - [12] in these nonresonant decay amplitudes. The decay B − → K 0K 0 π − is CKM forbidden [13,14].…”

R-parity-violating SUSY andCPviolation inB→φKS

“…The a t,c i are the usual combination of Wilson's coefficient in the effective Hamiltonian. For a i as well as the quark masses we use the values used in Ref [12]. The R-parity contribution can be written as,…”

A study of semi-inclusive charmless B → πX decays

“…In the parton model approximation we take the leading order term in the product of the above matrix elements, which corresponds to interpretation of the above process as [10]. Then, |M| 2 can be expressed as…”