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K and D oscillations in the Standard Model and its extensions from Nf=2+1+1 Twisted Mass LQCD
- Publication Year :
- 2014
-
Abstract
- We present the first Nf=2+1+1 results for the matrix elements of the operators describing neutral K and D mixing in the Standard Model and its extensions. The combination of maximally twisted sea quarks and Osterwalder-Seiler valence quarks ensures O(a)-improvement and continuum like renormalization pattern. We have used the Nf=2+1+1 dynamical quark gauge configurations generated by ETMC. Simulations include three lattice spacings in the interval [0.06:0.09] fm and pseudoscalar meson masses in the range [230:500] MeV. Our results are extrapolated to the continuum limit and to the physical quark masses. The calculation of the renormalization constants has been performed non-perturbatively in the RI-MOM scheme.
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.od......3668..874f1160a6b6371057548b497f79eb47