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| Leader: | B.A. Morozov |
detector set-up uses an internal well-localized hydrogen
or deuterium pellet target. An extremely thin-walled
(0.18 rad.lengths) superconducting solenoid is placed inside
the electromagnetic CsI(Na) calorimeter. Within the magnet,
there is a track detector
(17-layer straw drift chamber) surrounded by a thin layer of plastic
scintillators. The tracker is able to measure the momentum of leptons
with an accuracy of 1 
2% in the range of 20 600 MeV/c.
Particles emitted
in the forward direction are measured by a forward spectrometer
(calorimeter, tracker and trigger).
At present, emphasis is put on studies of production near
the kinematics threshold of - and 
-- mesons in pp and
pd interactions, bremsstrahlung, meson-nuclear quasi-bound
systems, dibaryon states and other exotic processes. Using forward -
going recoils in the pd and dd reactions, very-near-threshold
measurements of meson production are possible owing to a
small-angle tagging spectrometer for which the quadrupoles and the first
bending magnets downstream the target are used as components.
The future research is focussed on the rare decays of light mesons
0, and, if the energy is raised, '. Among
other things, these decays give knowledge of fundamental symmetries,
charge conjugation and parity, formfactors, possible exotic propagators
and chiral perturbation theory.
-set-up,
it is planned to investigate the nature
of isospin violation in the 
+ - 0
decay which is in Chiral Perturbation Theory connected with the
mass difference between up and down quarks. Therefore, we propose: + - 0
Dalitz plot distribution with an accuracy of about 3%, + - 0 / 2 
branching
ratio and to improve significantly the accuracy of the parameters that enter
into theoretical calculations. + - 0 decay in the
CELSIUS ring, by using deuterium target at two proton
energies, 894 MeV and 1360 MeV| List of projects: | |||
| Project | Leader |
Priority (period of realisation) | |
| 1. | WASA | B.A. Morozov | 2 (1997-2005) |
| List of Activities | |||||
| Activity or Experiment | Leader | ||||
| WASA | B.A. Morozov |
| |||
| Collaboration | |||
| Country or international organization | City | Institute or Laboratory | |
| Germany | Hamburg | Univ. | |
| Julich | FZJ | ||
| Tubingen | Univ. | ||
| Japan | Osaka | RCNP | |
| Tsukuba | KEK | ||
| JINR | Dubna | DLNP | |
| LPP | |||
| Poland | Lodz | SINS | |
| Warsaw | IEP WU | ||
| SINS | |||
| Russia | Moscow | SSC-ITEP | |
| MEPhI | |||
| Novosibirsk | BINP SB RAS | ||
| Petrozavodsk | PetrSU | ||
| Sweden | Uppsala | UU | |
| The USA | Los Angeles, CA | UCLA | |
| Tempe, AZ | ASU |
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