Speaker
Description
Hadrons physics experiments enable us to obtain a better understanding of the strong force in the non-perturbative regime. Electromagnetic form factors quantify the location and motion of the building blocks of hadrons at the femtometer scale. For stable hadrons the space like form factors are accessible in electron scattering experiments. For short lived baryons like hyperons, these experiments are not feasible, giving the need for alternative approaches. In electromagnetic Dalitz decays of hyperons, the time-like structure can be accessed in terms of transition form factors. My special interest lies here in the $\Sigma^0$ to $\Lambda$ transition, the only electromagnetic transition between ground state hyperons.
Electromagnetic hyperon Dalitz decays have never been measured before but are predicted by theory. The FAIR Phase-0 experiment PANDA@HADES gives us the unique opportunity to measure this type of decays since it enables the reconstruction of the hadronic decay products of the hyperons as well as the electrons from the Dalitz decay. We are performing a differential measurement of the $\Sigma^0$ to $\Lambda$ Dalitz decay with the aim to provide a first estimate of the magnetization radius of the $\Sigma^0$ hyperon and the branching ratio of the $\Sigma^0$ Dalitz decay.
