General analysis of lepton polarizations in rare B → K∗l+l− decay beyond the standard model
نویسنده
چکیده
The general analysis of lepton polarization asymmetries in rare B → K∗l+l− decay is investigated. Using the most general, model independent effective Hamiltonian, the general expressions of the longitudinal, normal and transversal polarization asymmetries for l and l+ and combinations of them are presented. The dependence of lepton polarizations and their combinations on new Wilson coefficients are studied in detail. Our analysis shows that the lepton polarization asymmetries are very sensitive to the scalar and tensor type interactions, which will be very useful in looking for new physics beyond the standard model. e-mail: [email protected] e-mail: [email protected]
منابع مشابه
New physics effects to the lepton polarizations in the B → Kl+l− decay
Using the general, model independent form of the effective Hamiltonian, the general expressions of the longitudinal, normal and transversal polarization asymmetries for l and l+ and combinations of them for the exclusive B → Kl+l− decay are found. The sensitivity of lepton polarizations and their combinations on new Wilson coefficients are studied. It is found that there exist regions of Wilson...
متن کاملDouble–lepton polarization asymmetries in the B → Kl+l− decay beyond the Standard Model
General expressions for the double–lepton polarizations in the B → Kl+l− decay are obtained, using model independent effective Hamiltonian, including all possible interactions. Correlations between the averaged double–lepton polarization asymmetries and the branching ratio, as well as, the averaged single–lepton polarization asymmetry are studied. It is observed that, study of the double–lepton...
متن کاملDsl+l−decay beyond the standard model
The rare Bc → Dslldecay is investigated by using the most general model independent effective Hamiltonian. The general expressions of longitudinal, normal and transversal polarization asymmetries for l and l+ and the combined asymmetries of them are found. The dependencies of the branching ratios and polarizations on the new Wilson coefficients are presented. The analysis shows that the branchi...
متن کاملNew physics effects in Λb → Λl+l− decay with lepton polarizations
We study lepton polarization asymmetries in the Λb → Λl+l− decay using the most general model independent effective Hamiltonian. The dependence of the lepton polarizations and their combinations on the new Wilson coefficients are studied in detail. It is observed that there is a region for the new Wilson coefficients for which the branching ratio coincides with the standard model prediction, wh...
متن کاملPolarized lepton pair forward–backward asymmetries in B → K∗l+l− decay beyond the standard model
We study the polarized lepton pair forward–backward asymmetries inB → K∗l+l− decay using the most general, model independent form of the effective Hamiltonian. We present the general expression for nine double–polarization forward–backward asymmetries. It is shown that, the study of the forward–backward asymmetries of the doubly–polarized lepton pair is a very useful tool for establishing new p...
متن کامل