Physical Sciences and Mathematics Commons^™

Implications Of D0- ¯D0 Mixing For New Physics, Eugene Golowich, Joanne Hewett, Sandip Pakvasa, Alexey A. Petrov

Eugene Golowich

We provide a comprehensive, up-to-date analysis of possible New Physics contributions to the mass difference ∆M_D in D^0- D ̅^0 mixing. We consider the most general low energy effective Hamiltonian and include leading order QCD running of effective operators. We then explore an extensive list of possible New Physics models that can generate these operators, which we organize as including Extra Fermions, Extra Gauge Bosons, Extra Scalars, Extra Space Dimensions and Extra Symmetries. For each model we place restrictions on the allowed parameter space using the recent evidence for observation of D meson mixing. In many scenarios, we find strong …