6533b822fe1ef96bd127cd4e
RESEARCH PRODUCT
Pion interaction with the trinucleon up to the eta production threshold
S.s. KamalovL. TiatorC. Bennholdsubject
Nuclear reactionPhysicsElastic scatteringNuclear and High Energy PhysicsFaddeev equationsMesonNuclear Theory010308 nuclear & particles physicsComputer Science::Information RetrievalHadronNuclear TheoryFOS: Physical sciencesElementary particle01 natural sciences7. Clean energyNuclear physicsNuclear Theory (nucl-th)PionQuantum mechanics0103 physical sciences010306 general physicsWave functionNuclear Experimentdescription
Pion elastic, charge exchange scattering and induced eta production on the trinucleon systems are investigated in a coupled-channels approach in momentum space with Fadeev wave functions. The channel $\pi N \rightarrow \eta N$ is included using an isobar model with S-, P-, and D-wave resonances. While the coherent reactions like $^3$He($\pi,\pi)^3$He can be reasonably well reproduced up to $T_{\pi}$=500 MeV, large discrepancies appear for the incoherent processes, $^3$He($\pi^-,\pi^0)^3$H and $^3$He($\pi^-,\eta)^3$H at backward angles and energies above $\Delta$-resonance. In the forward direction the $(\pi,\eta)$ calculations underestimate the experimental measurements very close to threshold but agreement with the data improves with increasing pion energy. Predictions are made for the asymmetries of the various reactions on polarized $^3$He.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1993-03-01 |