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Right-handed currents in $B\to K^{*}ll$

R. Mandal

in 9th International Workshop on the CKM Unitarity Triangle

Contribution: pdf


The rare decay $B\to K^*\ell^+\ell^-$ is an important mode for indirect search of new physics (NP) due to the measurement of large number of observables in experiments. Using the most general parametric form of the amplitude in the standard model (SM), we probe the physics beyond standard model in a theoretically clean approach. The model independent framework has been implemented in the maximum $q^2$ limit to highlight strong evidence of right-handed currents, which are absent in the SM. The conclusions derived are free from hadronic corrections. Our approach differs from other approaches that probe new physics at low $q^2$ as it does not require estimates of hadronic parameters but relies instead on heavy quark symmetries that are reliable at the maximum $q^2$ kinematic endpoint.