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Please use this identifier to cite or link to this item: http://hdl.handle.net/2307/407

Title: First lattice QCD Study of the Σ- --> n axial and vector form factors with SU(3) breaking corrections
Authors: Guadagnoli, Diego
Lubicz, Vittorio
Papinutto, Mauro
Simula, Silvano
Keywords: Lattice QCD
Weak decays
Chiral symmetry
Issue Date: 2007
Abstract: We present the first quenched lattice QCD study of the form factors relevant for the hyperon semileptonic decay Σ−→nℓν. The momentum dependence of both axial and vector form factors is investigated and the values of all the form factors at zero-momentum transfer are presented. Following the same strategy already applied to the decay K0→π−ℓν, the SU(3)-breaking corrections to the vector form factor at zero-momentum transfer, f1(0), are determined with great statistical accuracy in the regime of t
URI: http://hdl.handle.net/2307/407
DOI: 10.1016/j.nuclphysb.2006.10.022
URL: http://arxiv.org/abs/hep-ph/0606181
Appears in Collections:A - Articolo su rivista
X_Dipartimento di Fisica 'Edoardo Amaldi'

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