0000000001012530
AUTHOR
J Nieves
Lattice-constrained parametrizations of form factors for semileptonic and rare radiative B decays
We describe the form factors for B to rho lepton neutrino and B to K* gamma decays with just two parameters and the two form factors for B to pi lepton neutrino with a further two or three parameters. The parametrizations are consistent with heavy quark symmetry, kinematic constraints and lattice results, which we use to determine the parameters. In addition, we test versions of the parametrizations consistent (or not) with light-cone sum rule scaling relations at q^2=0.
A Review on mesonic decay of Lambda hypernuclei
A review of the present situation of the mesonic decay of Lambda hypernuclei is done. The link between the propagator method and the one with wave functions and nuclear matrix elements is established. The lack of links between the mesonic decay and the nucleon occupation number in nuclear matter is also;discussed, as well as the effect of the Lambda N short range repulsion in the mesonic decay of light hypernuclei. The relevance of the 2p2h induced Lambda decay channel is also discussed. Finally an overview of the potential use of the process, when systematic measurements over the periodic table are done, is presented at the end.