Rare B-Decays and Z0-Penguin Contributions From the Charged Pseudo-Goldstone Bosons
- Received Date: 1998-05-04
- Accepted Date: 1900-01-01
- Available Online: 1999-07-05
Abstract: In this paper, the one-loop contributions to the rare B-decays B→Xs,dνν and Bs,d→1+1-(1= e,μ,τ) from the charged pesudo-Goldstone bosons P± and P±8 are calculated. Within the parameter space, we find that: (a) the P± and P8± can provide rather large enhancements to the branching ratios of the rare B-decays in question, the maximum increase is about a factor of 3 to Br(B→Xs,d,νν), and a factor of 5 to Br (Bs,d→1+1-); (b) the color-octet pesudo-Goldstone boson P±8 dominates the contributions to all rare B-decays under consideration; (c) no limit on the masses of charged pesudo-Goldstone bosons can be achieved from the current experimental data, but the forthcoming data may reach the sensitivity to find the signals of new physics beyond the Standard Model.