https://doi.org/10.1140/epjc/s2003-01540-6
experimental physics
Production and decay of 
and 
in 
annihilation at rest
1
LBNL, University of California, CA 94720, Berkeley, USA
2
Universität Bochum, 44780, Bochum, Germany
3
Universität Bonn, 53115, Bonn, Germany
4
Academy of Science, 1525, Budapest, Hungary
5
Rutherford Appleton Laboratory, OX11 0QX,, Chilton, Didcot, UK
6
CERN, 1211, Geneva 4, Switzerland
7
Universität Hamburg, 22761, Hamburg, Germany
8
Universität Karlsruhe, 76021, Karlsruhe, Germany
9
Queen Mary and Westfield College, E1 4NS, London, UK
10
University of California, CA 90024, Los Angeles, USA
11
Universität Mainz, 55099, Mainz, Germany
12
Universität München, 80333, München, Germany
13
LPNHE Paris VI, VII, 75252, Paris, France
14
Carnegie Mellon University, PA 15213, Pittsburgh, USA
15
Centre de Recherches Nucléaires, 67037, Strasbourg, France
16
Universität Zürich, 8057, Zürich, Switzerland
We report on a study of four reactions in 
annihilation at rest, of 
, 
, 
and 
. The 
and the 
(1440) are seen in their decays into 
, 
and 
; no signal is seen in the 
invariant mass distribution. Branching ratios for and (1440) production and decay into the different channels are determined. In particular we derive the ratio 
.
© Springer-Verlag, 2004
