A Possible Arena for Searching New Physics - the $\Gamma (D^0\to {\rho }^0\gamma )/\Gamma (D^0\to \omega \gamma )$ Ratio

Abstract

We propose to investigate flavour changing neutral currents in the $c\to u\gamma$ transition through the measurement of the difference between $\Gamma (D^0\to {\rho }^0\gamma )$ and $\Gamma (D^0\to \omega \gamma )$. This is based on the observation that $D^0\to (d\bar{d})\gamma$ is due to long distance physics while $D^0\to (u\bar{u})\gamma$ arises from the $c\to u\gamma$ transition. The effect of $\rho -\omega$ mixing is included. A difference in the decay widths of more than about 30% would be indicative of new physics.

7 pages, 1 figure included

References in corpus (4)

• Resonant and nonresonant contributions to the weak $D\to V{l}^{+}{l}^{-}$ decays
• FCNC transitions $c\to u\gamma$ and $s\to d\gamma$ in $B_c\to B_u^{\ast }\gamma$ and $B_s\to B_d^{\ast }\gamma$ decays
• One-loop flavor changing electromagnetic transitions
• Extracting Br(omega->pi^+ pi^-) from the Time-like Pion Form-factor

Cited by in corpus (12)

• B, D and K decays
• Shedding light on CP violation in the charm system via D to V gamma decays
• Rare charm meson decays D->Pl^+l^- and c->ul^+l^- in SM and MSSM
• $c\to u\gamma$ in the minimal supersymmetric standard model
• Rare radiative charm decays within the standard model and beyond
• The Rare Decay D^0 -> gamma gamma
• Constraints on heavy Z' couplings from ΔS = 2 B^- -> K^- K^- π^+ decay
• The rare decays of D mesons
• Probing new physics in $B\to J/\Psi {\pi }^0$ decay
• Cabibbo Allowed D -> K pi gamma Decays
• Searching for New physics in Charm Radiative decays
• Charm Radiative Decays with Neutral Mesons D^0 -> K^0(bar) pi^0 gamma, D^0 -> K^0(bar) eta (eta') gamma