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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
