Implications of D^0-\bar D^0 Mixing for New Physics

Abstract

We provide a comprehensive, up-to-date analysis of possible New Physics contributions to the mass difference $\Delta M_D$ in $D^0$-${\bar{D}}^0$ 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 constraints that surpass those from other search techniques and provide an important test of flavor changing neutral currents in the up-quark sector. We also review the recent BaBar and Belle findings, and describe the current status of the Standard Model predictions of $D^0$-${\bar{D}}^0$ mixing.

86 pages, typos fixed

References in corpus (4)

• D-Dbar mixing and new physics: general considerations and constraints on the MSSM
• Topological Physics of Little Higgs Bosons
• $D-\bar{D}$ mixing constraints on FCNC with a non-universal $Z^{\prime }$
• D-\bar D mixing and rare D decays in the Littlest Higgs model with non-unitarity matrix

Cited by in corpus (7)

• Flavor Changing Neutral Higgs Bosons in a Supersymmetric Extension based on a $Q_6$ Family Symmetry
• A Little Twin Higgs Model
• Models and Phenomenology of Maximal Flavor Violation
• Lifetime difference in D^0 - \bar{D^0} mixing within R-parity-violating SUSY
• Constraint from D - anti-D Mixing in Left-Right Symmetric Models
• On the Non-Manifest Left-Right Model Contribution to the Lifetime Difference in $D^0-{\bar{D}}^0$ Mixing
• SUSY beyond minimal flavour violation