PRODUCTION OF P PI+PI-ENHANCEMENTS FROM REACTION K-P-]K-PPI+PI- AT 3.9,GEV/C 4.6,GEV/C AND 7.3 GEV/C

Evidence is presented for the existence of an N*(1710) (M=1712±6 MeV and Γ=70±15 MeV) produced in the reaction K-p→K-pπ+π- at incident momenta of 3.9, 4.6, and 7.3 GeV/c. It decays mainly into pπ+π- and not through the Δ++π- intermediate state, with some indication for a ΛK+ decay mode. Also observed in the pπ+π- invariant mass spectrum is the N*(1470). © 1969 The American Physical Society.