6533b838fe1ef96bd12a5216
RESEARCH PRODUCT
Nonlocalities and Fermi motion corrections in K- atoms
Angels RamosCarmen Garcia-recioJ. NievesE. Osetsubject
Nuclear Theory (nucl-th)PhysicsNuclear and High Energy PhysicsAmplitudeNuclear TheoryQuantum electrodynamicsFOS: Physical sciencesMotion (geometry)FísicaEnergy–momentum relationOptical potentialFermi Gamma-ray Space Telescopedescription
We evaluate the p-wave $K^-N$ amplitudes from the chiral Lagrangians and from there construct the p-wave part of the $K^-$ nucleus optical potential plus a small s-wave part induced from the elementary p-wave amplitude and the nuclear Fermi motion. Simultaneously, the momentum and energy dependence of the s-wave optical potential, previously developed, are taken into account and shown to generate a small p-wave correction to the optical potential. All the corrections considered are small compared to the leading s-wave potential, and lead to changes in the shifts and widths which are smaller than the experimental errors. A thorough study of the threshold region and low densities is conducted, revealing mathematical problems for which a physical solution is given.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2002-01-01 |