Experimental spectra for 12 GeV/c K+p → pK+φ and pK+ω

Abstract We present experimental distributions for the reactions K + p → pK + φ , φ → K − K + and K + p → pK + ω , ω → π − π + π 0 at 12 GeV/ c . The data were obtained from a 35 events/μb exposure of the SLAC 82-inch HBC. The cross sections for these reactions are (11 ± 1) μb and (47 ± 3) μb. We observe Kφ, Kω, and pω low-mass enhancements with no evidence for narrow structure. The momentum-transfer and angular-decay spectra of these systems are presented.