Chiral Symmetry and N*(1440) -> N pi pi Decay

Abstract

The N*(1440) -> N pi pi decay is studied by making use of the chiral reduction formula. This formula suggests a scalar-isoscalar pion-baryon contact interaction which is absent in the recent study of Hern{á}ndez et al. The contact interaction is introduced into their model, and is found to be necessary for the simultaneous description of g_{RN pi pi} and the pi-pi and pi-N invariant mass distributions.

arXiv comment12 pages

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Cited by in corpus (3)

• Neutrino induced threshold production of two pions and N^*(1440) electroweak form factors
• The pi N -> pi pi N reaction around the N(1440) energy
• Master formula approach to broken chiral U(3)xU(3) symmetry