Access Type

Open Access Dissertation

Date of Award

January 2014

Degree Type


Degree Name



Physics and Astronomy

First Advisor

Alexey A. Petrov


In this doctoral dissertation I discuss the phenomenology of some weak interaction decays using a model independent approach by employing effective field theories. I discuss the soft photon contribution and background effect to the rare dimuonic decay of the neutral B meson. I also study some radiative exclusive W boson decays in the standard model in the context of pQCD and SCET. Additionally I invoke leptonic decays of charged mesons to constrain two general models of light dark matter.