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Standard and non-standard hyperon beta decays (HYP BETA DEC)
Date du début: 1 oct. 2013, Date de fin: 30 sept. 2016 PROJET  TERMINÉ 

"We aim to provide the first comprehensive analysis of the physics reach of the hyperon beta decays using an effective field theory setup. The project includes assessing the experimental sensitivity required in different hyperon decay observables to perform critical tests of the s->u transitions of the Standard Model, and to identify prominent observables particularly sensitive to non-standard effects. Complementarity with equivalent analyses in kaon (semi)leptonic decays will be addressed. The main goal of the project is to use hyperon beta decay observables to constrain models beyond the standard model at the TeV energy scale or, eventually, to discover effects of new physics. Determination of the form factors using chiral perturbation theory, Large Nc methods, and using results from lattice quantum chromodynamics calculations will be necessary. The outgoing phase takes place in the University of California/San Diego with Prof Aneesh Manohar, who developed the chiral and Large Nc theories employed in this proposal. The return phase takes place in the Institut für Kernphysik of the Johannes Gutenberg University of Mainz, in collaboration with Prof M. Vanderhaeghen. The return host currently counts with a network of prestigious Research Groups, Centers and Infrastructures focused on the search of physics beyond the Standard Model. The proposal aims to trigger the interest at both the experimental and theoretical levels to undertake, in the medium- and long-term, a high-precision study of the hyperon beta decays, with the subsequent increase of the determination/discovery /constraining power of these modes."