We present preliminary results of an exploratory lattice study of the vector form factor f(1)(q(2) = 0) relevant for the semileptonic hyperon decay Sigma(-) --> n l v. This study is based on the same method used for the extraction of f(+)(0) for the decay K-0 --> pi(-) l v. The main purpose of this study is to test the method for hyperon form factors in order to estimate the precision that can be reached and the importance of SU(3)-breaking effects.

Semileptonic hyperon decays on the lattice: an exploratory study / D., Guadagnoli; Martinelli, Guido; Papinutto, MAURO LUCIO; S., Simula. - In: NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS. - ISSN 0920-5632. - 140:SPEC. ISS.(2005), pp. 390-392. ((Intervento presentato al convegno 22nd International Symposium on Lattice Field Theory tenutosi a Batavia; USA [10.1016/j.nuclphysbps.2004.11.316].

Semileptonic hyperon decays on the lattice: an exploratory study

MARTINELLI, Guido;PAPINUTTO, MAURO LUCIO;
2005

Abstract

We present preliminary results of an exploratory lattice study of the vector form factor f(1)(q(2) = 0) relevant for the semileptonic hyperon decay Sigma(-) --> n l v. This study is based on the same method used for the extraction of f(+)(0) for the decay K-0 --> pi(-) l v. The main purpose of this study is to test the method for hyperon form factors in order to estimate the precision that can be reached and the importance of SU(3)-breaking effects.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11573/498248
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