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Chiral behavior of kaon semileptonic form factors in lattice QCD with exact chiral symmetry

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arxiv 1211.6180 v1 pith:QYVACYWL submitted 2012-11-27 hep-lat hep-ph

Chiral behavior of kaon semileptonic form factors in lattice QCD with exact chiral symmetry

classification hep-lat hep-ph
keywords chiralfactorsformquarkbehaviorcalculatekaonlattice
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We calculate the kaon semileptonic form factors in lattice QCD with three flavors of dynamical overlap quarks. Gauge ensembles are generated at pion masses as low as 290 MeV and at a strange quark mass near its physical value. We precisely calculate relevant meson correlators using the all-to-all quark propagator. Twisted boundary conditions and the reweighting technique are employed to vary the momentum transfer and the strange quark mass. We discuss the chiral behavior of the form factors by comparing with chiral perturbation theory and experiments.

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