0000000000387571
AUTHOR
V. Porretti
D–D¯ mixing and new physics: General considerations and constraints on the MSSM
Abstract Combining the recent experimental evidence of D – D ¯ mixing, we extract model-independent information on the mixing amplitude and on its CP-violating phase. Using this information, we present new constraints on the flavour structure of up-type squark mass matrices in supersymmetric extensions of the Standard Model.
MINIMAL LEPTON FLAVOUR VIOLATION AND LEPTOGENESIS
We study the role of leptogenesis in the framework of minimal lepton flavour violation.
Operator product expansion and quark condensate from Lattice QCD in coordinate space
We present a lattice QCD determination of the chiral quark condensate based on a new method. We extract the quark condensate from the operator product expansion of the quark propagator at short euclidean distances, where it represents the leading contribution in the chiral limit. From this study we obtain MS( 2 GeV) = -( 265 +/- 5 +/- 22MeV)(3), in good agreement with determinations of this quantity based on different approaches. The simulation is performed by using the O( a)- improved Wilson action at beta = 6.45 on a volume 32(3) x 70 in the quenched approximation.