We show how experimental values of the lifetime of the l s level of pionium and of the difference between the energies of the 2s and 2p levels yield values of the elements ao,. and a,. respectively of the s-wave scattering matrix for the two-channel (Tr+Tr -, 7r°Tr °) system at the 7r+Tr -threshold.
Extraction of interaction parameters from near threshold positron experiments
✍ Scribed by P.A. Macri; R.O. Barrachina
- Publisher
- Elsevier Science
- Year
- 2009
- Tongue
- English
- Weight
- 301 KB
- Volume
- 267
- Category
- Article
- ISSN
- 0168-583X
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
We give the conversion equations which lead from experimental values of the 3p → 1s transition energy in pionic hydrogen and the total width of the 1s level to values of the s-wave threshold scattering parameters for the processes π -p → π -p and π -p → π 0 n respectively. Using a three-channel pote
The task of Mo ¨ssbauer spectra processing of complex locally inhomogeneous or multi-phase systems is to reveal subspectral contributions with appreciably different values of hyperfine interaction parameters (HFI) in them. A universal method of processing such spectra is suggested which allows to ex