CERN Accelerating science

Article
Title Coupled channel analysis of proton-antiproton annihilation into π0π0π0, π0ηη and π0π0η
Author(s)

Amsler, C ; Armstrong, D.S. ; Baker, C.A. ; Barnett, B.M. ; Batty, C.J. ; Benayoun, Maurice (CERN) ; Beuchert, K. ; Birien, P. ; Blum, P. ; Bossingham, R. ; Braune, K. ; Brose, J. ; Bugg, D.V. ; Case, T. ; Chung, S.U. ; Cooper, A.R. ; Cramer, O. ; Crowe, K.M. ; Degener, T. ; Dietz, H.P. ; Djaoshvili, N. ; von Dombrowski, S. ; Doser, M. ; Dunnweber, Wolfgang ; Engelhardt, D. ; Englert, M. ; Faessler, M.A. ; Felix, C. ; Giarritta, P. ; Hackmann, R. ; Haddock, R.P. ; Heinsius, F.H. ; Herz, M. ; Hessey, N.P. ; Hidas, P. ; Holzhaussen, C. ; Illinger, P. ; Jamnik, D. ; Kalinowsky, H. ; Kalteyer, B. ; Kaemmle, B. ; Kiel, T. ; Kisiel, J. ; Klempt, E. ; Koch, H. ; Kobel, M. ; Kolo, C. ; Kunze, M. ; Lakata, M. ; Landua, R. ; Luedemann, J. ; Matthaey, H. ; McCrady, R. ; Merlo, J.P. ; Meyer, C.A. ; Montanet, L. ; Noble, A. ; Ouared, R. ; Ould-Saada, F. ; Peters, K. ; Pinder, C.N. ; Pinter, G. ; Ravndal, S. ; Regenfus, Christian ; Schaefer, E. ; Schmidt, P. ; Schuetrumpf, M. ; Seibert, R. ; Spanier, S. ; Stoeck, H. ; Strassburger, C. ; Strohbusch, U. ; Suffert, M. ; Thoma, U. ; Tischhaeuser, M. ; Urner, D. ; Voelcker, C. ; Walter, F. ; Walther, D. ; Wiedner, U. ; Winter, N. ; Zoll, J. ; Zou, B.S. ; Zupancic, C.

Publication 1995
Imprint 1995
In: Phys. Lett. B 355 (1995) 425
DOI 10.1016/0370-2693(95)00747-9
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LEAR ; PS197
Abstract We confirm the existence of the two I G ( J PC ) = 0 + (0 ++ ) resonances f 0 (1370) and f 0 (1500) reported by us in earlier analyses. The analysis presented here couples the final states π 0 π 0 π 0 , π 0 π 0 η and π 0 ηη of p p annihilation at rest. It is based on a 3 × 3 K -matrix. We find masses and widths of M = (1390±30) MeV, Γ = (380±80) MeV; and M = (1500±10) MeV, Γ = (154 ± 30) MeV, respectively. The product branching ratios for the production and decay into π 0 π 0 and ηη of the f 0 (1500) are (1.27 ± 0.33) · 10 −3 and (0.60 ± 0.17) · 10 −3 , respectively.

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