Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-10-20
Phys.Rev. C69 (2004) 025206
Physics
High Energy Physics
High Energy Physics - Phenomenology
19 pages, 6 figures, Version to appear in Phys. Rev. C. Part of introduction and summary are renewed. Some references are adde
Scientific paper
10.1103/PhysRevC.69.025206
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-Delta-Delta and rho-N-Delta interactions on this reaction, which has not been regarded as important so far, is considered for all channels with the initial pi^{+ -}p states. The total cross sections are calculated to tree level for the energy up to T_{pi}=400 MeV. Although the pi-Delta-Delta and rho-N-Delta interactions give a small effect on the pi^{+}p -> pi^{+}pi^{+}n, pi^{-}p -> pi^{+}pi^{-}n and pi^{-}p -> pi^{0}pi^{0}p channels, the pi^{+ -}p -> pi^{+ -}pi^{0}p channels are found to be sensitive to these interactions.
Arima Masaki
Kamano Hiroyuki
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