• DOI:10.1142/S0217751X06034902
• Corpus ID: 14564633

CHARM MIXING IN THE STANDARD MODEL AND BEYOND

@inproceedings{Petrov2006CHARMMI,
  title={CHARM MIXING IN THE STANDARD MODEL AND BEYOND},
  author={Alexey A. Petrov},
  year={2006}
}

• A. Petrov
• Published 30 October 2006
• Physics

Quantum mechanical meson-antimeson oscillations are sensitive to heavy degrees of freedom which propagate in the underlying mixing amplitudes. Comparing observed meson mixing with predictions of the Standard Model (SM), modern experimental studies would be able to constrain models of New Physics (NP). Yet, extensive precission data from B-factories and the Tevatron collider show that the large SM mixing succesfully describes all available experimental data in Bd and Bs oscillations. The only flavor oscillation not yet observed is that of the charmed meson D, where SM mixing is very small and the NP component can stand out. This situation is an exact opposite to what happens in the B system, where B − B0 mixing measurements are used to constrain top quark couplings. Together with the one loop Standard Model effects NP effects can contribute to ∆C = 1 (decays) or ∆C = 2 (mixing) transitions. In the case of D −D0 mixing these operators generate contributions to the effective operators that change D state into D0 state, leading to the mass eigenstates |D1,2〉 = p|D〉 ± q|D〉, (1)