Evidence for a New Strangeness-One Pseudoscalar Meson
G. W. Brandenburg,R. K. Carnegie,R. J. Cashmore,M. Davier,W. M. Dunwoodie,T. A. Lasinski,D. W. G. S. Leith,J. A. J. Matthews,P. Walden,S. H. Williams;G. W. Brandenburg;R. K. Carnegie;R. J. Cashmore;M. Davier;W. M. Dunwoodie;T. A. Lasinski;D. W. G. S. Leith;J. A. J. Matthews;P. Walden;S. H. Williams;
physical review letters1976Vol. 36pp. 1239-1242
160
williams1976physicalevidence
Abstract
The JP=0− partial waves of the Kππ system in the reactions K±p→K±π+π−p at 13 GeV are presented. Structure in intensities and relative phase variations suggest the existence of a pseudoscalar resonance, the K′, with a mass of ∼1400 MeV and a width of ∼250 MeV decaying predominantly into εK.