12.10.2015 16:15

Threshold neutral pion photoproduction in ChPT

Astrid Blin (Valencia)

Near threshold of pion photoproduction, the cross sections of the neutral channel are very small.  Therefore, while the charged channels are well described in even lowest-order chiral perturbation theory models, higher orders have to be considered for the pi0 case.  I present a calculation up to third chiral order.  Furthermore, I show the importance of the inclusion of the degrees of freedom of the Delta(1232) resonance in order to describe the data, which show a steep variation of the cross sections with the energy.

 

(Seminarraum II)

Kategorie: Kernphysik