Analysis of inclusiveKK¯πfrom 11-GeV/cK−p interactions

Abstract

Inclusive production of the $K_S^0$ $K^{\pm }$ ${\pi }^{\mp }$ system has been studied in $K^{\mathrm{-}}$p interactions at 11 GeV/c using the large-aperture solenoid spectrometer at SLAC. We have isolated a sample of 3837 K¯ ${}_{}{}^0{}_{}{}^{}K_{}^{+}{}_{}{}^{}$ ${\pi }^{\mathrm{-}}$ and 3019 $K^0$ $K^{\mathrm{-}}$ ${\pi }^{+}$ events. A Dalitz-plot analysis shows that the major quasi-two-body channel in the KK¯π system is ($K^{\mathrm{*}}$K¯+c.c.). The data have been subjected to a partial-wave analysis as a function of KK¯π mass. In the lower-mass region (1.2–1.8 GeV) the KK¯π system is dominated by the $J^P$ ${=1\mathrm{}}^{+}$ ($K^{\mathrm{*}}$K¯+c.c) amplitudes. No evidence is found for δ(980)π production in any $J^P$ state. No clear KK¯π resonant behavior is demanded by the data.