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Flavour physics from lattice QCD at the physical point

Objectif

The matrix elements of the electro-weak mixing matrix, the Cabibbo-Kobayashi-Maskawa matrix, are of importance to many experimental and phenomenological applications in flavour physics. We will address the particular matrix element V(us), which can be extracted from experimental measurements once the kaon semi-leptonic form factors for the K(l3) decay is known. Therefore, we will provide quantitative results for that form factor using numerical simulations of Quantum Chromodynamics on the lattice, i.e. lattice QCD.

The hadronic matrix element for the K to pi decay will be measured on gauge configurations produced by the QCDSF collaboration. Those lattice QCD simulations are performed with 2 and 2+1 quark flavours of various masses, where the light quark masses eventually will approach the physical point realized in Nature. The non-perturbative clover improved fermion action is used to simulate the dynamical quark effects. Results for the kaon semi-leptonic form factor at different simulated quark masses will be compared with predictions from chiral perturbation theory.

Appel à propositions

FP7-PEOPLE-2010-RG
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Coordinateur

UNIVERSITAET REGENSBURG
Contribution de l’UE
€ 100 000,00
Adresse
UNIVERSITATSSTRASSE 31
93053 Regensburg
Allemagne

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Région
Bayern Oberpfalz Regensburg, Kreisfreie Stadt
Type d’activité
Higher or Secondary Education Establishments
Contact administratif
Johanna Kronberger (Ms.)
Liens
Coût total
Aucune donnée