Published in

Elsevier, Physics Letters B, 4(322), p. 431-440, 1994

DOI: 10.1016/0370-2693(94)91176-2

Links

Tools

Export citation

Search in Google Scholar

Observation of a scalar resonance decaying to π+π−π0π0 in annihilation at rest

Journal article published in 1994 by C. Amsler, D. S. Armstrong, I. Augustin, C. A. Baker, B. M. Barnett, C. J. Batty, K. Beuchert, P. Birien, P. Blüm, R. Bossingham, K. Braune, J. Brose, D. V. Bugg, M. Burchell ORCID, T. Case and other authors.
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

Full text: Download

Green circle
Preprint: archiving allowed
Upload
Green circle
Postprint: archiving allowed
Upload
Green circle
Published version: archiving allowed
Upload
Policy details
Data provided by SHERPA/RoMEO

Abstract

We report an analysis of ppBAR annihilation at rest in to rho+rho-pi0 leading to the final state pi+pi-3pi0. A strong signal is observed for a scalar resonance with mass 1374 +/- 38 MeV/c2 and width 375 +/- 61 MeV/c2, decaying to rho+rho-. The resonance in rho+rho- represents 2.0 +/- 0.3% of all ppBAR annihilations at rest. It is also observed to decay into two S-wave dipions (pi+pi-)(pi0pi0). Under the assumption of isospin 0, this is probably f0(1400), seen for the first time in its 4pi decay mode.