0000000000387571

AUTHOR

V. Porretti

showing 3 related works from this author

D–D¯ mixing and new physics: General considerations and constraints on the MSSM

2007

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.

QuarkPhysicsNuclear and High Energy PhysicsParticle physicsPhysics beyond the Standard ModelHigh Energy Physics::PhenomenologySuperpartnerCP violationHigh Energy Physics::ExperimentSupersymmetryMass matrixMixing (physics)Standard ModelPhysics Letters B
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MINIMAL LEPTON FLAVOUR VIOLATION AND LEPTOGENESIS

2006

We study the role of leptogenesis in the framework of minimal lepton flavour violation.

PhysicsHigh Energy Physics - PhenomenologyParticle physicsHigh Energy Physics - Phenomenology (hep-ph)High Energy Physics::LatticeLeptogenesisHigh Energy Physics::PhenomenologyFlavourFOS: Physical sciencesHigh Energy Physics::ExperimentNeutrinoMu to E GammaLeptonHigh Energy Physics
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Operator product expansion and quark condensate from Lattice QCD in coordinate space

2005

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.

QuarkQuantum chromodynamicsPhysicsParticle physicsPhysics and Astronomy (miscellaneous)Field (physics)High Energy Physics::LatticeNuclear TheoryHigh Energy Physics::PhenomenologyHigh Energy Physics - Lattice (hep-lat)Lattice (group)FísicaPropagatorFOS: Physical sciencesRenormalizationHigh Energy Physics - PhenomenologyHigh Energy Physics - LatticeHigh Energy Physics - Phenomenology (hep-ph)High Energy Physics::ExperimentOperator product expansionCoordinate spaceEngineering (miscellaneous)
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