Partial-wave analysis of J /. psi. r arrow. gamma. K sup 0 sub S K sup +. pi. sup

• Published in: Physical review letters Vol. 65:20
• Main Authors: Bai, Z., Blaylock, G.T., Bolton, T., Brient, J.C., Browder, T., Brown, J.S., Bunnell, K.O., Burchell, M., Burnett, T.H., Cassell, R.E., Coffman, D., Cook, V., Coward, D.H., DeJongh, F., Dorfan, D.E., Drinkard, J., Dubois, G.P., Eigen, G., Einsweiler, K.F., Eisenstein, B.I., Freese, T., Gatto, C., Gladding, G., Grab, C., Hauser, J., Heusch, C.A., Hitlin, D.G., Izen, J.M., Kim, P.C., Labs, J., Li, A., Lockman, W.S., Mallik, U., Matthews, C.G., Mincer, A.I., Mir, R., Mockett, P.M., Nemati, B., Odian, A., Parrish, L., Partridge, R., Pitman, D., Plaetzer, S.A., Richman, J.D., Sadrozinski, H.F.W., Scarlatella, M., Schalk, T.L., Schindler, R.H., Seiden, A., Simopoulos, C., Stockdale, I.E., Toki, W., Tripsas, B., Villa, F., Wang, M., Wasserbaech, S., Weinstein, A.J., Weseler, S., Willutzki, H.J., Wisinski, D., Wisniewski, W.J., Xu, R., Zhu, Y., The Mark III Collaboration
• Format: Journal Article
• Language: English
• Published: United States 12-11-1990
• Subjects: 645101 - High Energy Physics- Particle Interactions & Properties-Experimental- Electromagnetic Interactions & Properties; 645103 - High Energy Physics- Particle Interactions & Properties-Experimental- Strong Interactions & Baryon & Meson Properties; A0-980 MESONS; BOSONS; CHARMONIUM; DATA; ELEMENTARY PARTICLES; ENERGY RANGE; ETA-1440 MESONS; EXPERIMENTAL DATA; GEV RANGE; GEV RANGE 01-10; HADRONS; INFORMATION; ISOBAR MODEL; J PSI-3097 MESONS; KAONS; KAONS NEUTRAL; KAONS NEUTRAL SHORT-LIVED; KAONS PLUS; MATHEMATICAL MODELS; MESONS; NUMERICAL DATA; PARTIAL WAVES; PARTICLE MODELS; PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; PIONS; PIONS MINUS; PSEUDOSCALAR MESONS; PSEUDOSCALARS; QUARKONIUM; RADIATIVE DECAY; SCALAR MESONS; STRANGE MESONS; STRANGE PARTICLES; VECTOR MESONS
• ISSN: 0031-9007; 1079-7114
• DOI: 10.1103/PhysRevLett.65.2507

Results from a partial-wave analysis of the decay {ital J}/{psi}{r arrow}{gamma}{ital K}{sub {ital S}}{sup 0}{ital K{plus minus}}{pi}{sup {minus plus}} in the {ital K}{sub {ital S}}{sup 0}{ital K}{sup {plus minus}}{pi}{sup {minus plus}} invariant-mass range 1.35--1.6 GeV/{ital c}{sup 2} are presented. Within the isobar model, the data in this mass range are best described by a mixture of 0{sup {minus}+} and 1{sup ++} amplitudes, corresponding to the {ital K}{sup *}{ital {bar K}}+c.c ({ital P} wave), {ital K}{sup *}{ital {bar K}}+c.c ({ital S} wave), and {ital a}{sub 0}(980) {pi} ({ital S} wave) channels. These results show that {eta}(1430) is not a {ital J}{sup {ital P}{ital C}}=0{sup {minus}+} {ital a}{sub 0}(980){pi} resonance, but a mixture of overlapping states.