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Please use this identifier to cite or link to this item: http://hdl.handle.net/2307/271

Title: Vector and scalar form factors for K- and D-mesonsemileptonic decays from twisted mass fermionswith Nf = 2
Authors: Di Vita, Stefano
Haas, Benjamin
Lubicz, Vittorio
Mescia, Federico
Simula, Silvano
Tarantino, Cecilia
Keywords: Lattice QCD
Flavour Physics
Semileptonic Decays
Kaon Decays
D-meson Decays
Issue Date: 2009
Publisher: Proceedings of Science
Pages: 257-264
Abstract: We present lattice results for the formfactors relevant in the K→p ℓnℓ and D→p ℓnℓ semileptonic decays, obtained from simulations with two flavors of dynamical twisted-mass fermions and pion masses as light as 260 MeV. For K →p ℓn decays we discuss the estimates of the main sources of systematic uncertainties, including the quenching of the strange quark, leading to our final result f+(0) = 0.9560(57)stat.(62)syst.. Combined with the latest experimental data, our value of f+(0) implies for
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URI: http://hdl.handle.net/2307/271
URL: http://pos.sissa.it/archive/conferences/091/257/LAT2009_257.pdf
Appears in Collections:Dipartimento di Fisica 'Edoardo Amaldi'
ATC - Atti di Convegno

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