RESULTS FROM 3.0-GEV/C K+ INTERACTIONS IN HYDROGEN

The interaction of 3.0-GeVc K+ mesons on protons was studied in an exposure of the Brookhaven National Laboratory (BNL) 80-in. hydrogen bubble chamber at the alternating gradient synchrotron (AGS). Results are presented concerning a search for resonances requiring higher SU(3) representations than 8 or 10, namely, an isotopic-spin-1 (K+K+) or -32 <>(K+π+) boson, and an isotopic-spin-0 or -1 (K+n) baryon. Evidence is also given for the existence of the N*(1400) resonance, as well as a new (Kπ) resonance with mass 1260±20 MeV and width 70 MeV. © 1969 The American Physical Society.