We performed a global fit to data from Dark Matter direct detection experiments, discussing possible interpretations of the DAMA annual modulation signal in terms of spin-independent and spin-dependent DM-nucleus interactions, both for elastic and inelastic scattering. We find that in the spin-dependent inelastic scattering off protons a good fit to all data is obtained. In all the remaining cases the DAMA allowed regions are disfavored by other experiments or suffer from severe fine tuning of DM parameters with respect to the galactic escape velocity.
COBISS.SI-ID: 23510823
At NLO order in QCD we compute the branching ratios for the rare top quark decays to charm quark and a photon or a Z boson, that are mediated by effective flavor changing neutral couplings. We find that the t to c photon decay can be used to probe also the effective operators mediating t to c gluon processes.
COBISS.SI-ID: 23788583