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

Martinelli, Guido;
2005-01-01

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.
2005
Nuclear Physics B - Proceedings Supplements
140
SPEC. ISS.
390
392
ELSEVIER SCIENCE BV
D., Guadagnoli; Martinelli, Guido; Mauro Lucio, Papinutto; S., Simula
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/33342
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