29 citations · 66 across the 8 of their papers we have counts for
8 papers
The pi N -> pi pi N reaction around the N(1440) energy
Hiroyuki Kamano, Masaki Arima
We study the pi N -> pi pi N reaction around the N(1440) mass-shell energy. Considering the total cross sections and invariant mass distributions, we discuss the role of N(1440) an…
Chiral Symmetry and N*(1440) -> N pi pi Decay
H. Kamano, M. Morishita, M. Arima
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…
Delta(1232) in piN -> pipiN reaction
Hiroyuki Kamano, Masaki Arima
The contribution of Delta(1232) to the piN -> pipiN reaction is examined by making use of the chiral reduction formula developed by Yamagishi and Zahed. The influence of the pi-Del…
Quasi-coherent state of pions in the nucleon
Masanori Morishita, Masaki Arima
Making use of the quasi-coherent state developed by Eriksson et al., we can find a nucleon solution accompanied by the pion field with trivial topology. We compare our approach wit…
Coherent Pair State of Pion in Constituent Quark Model
Masanori Morishita, Masaki Arima
A coherent state of pions is introduced to the nonrelativistic quark model. The coherent pair approximation is employed for the pion field in order to maintain the spin-isospin sym…
Excitation Spectrum in the Friedberg-Lee Model
H. Kowata, M. Arima
The excitation spectrum of the nucleon with the spin 1/2 is examined by using the Friedberg-Lee model containing the constituent quark and the scalar meson. An appropriate way of q…