Two neutrino double beta decay within the ξ-approximation
Abstract We examine the contributions of odd-parity nuclear operators to the two-neutrino double beta decay 0+ → 0+ amplitude, which come from the P-wave Coulomb corrections to the electron wave functions and the recoil corrections to the nuclear currents. Although they are formally of higher order...
Guardado en:
| Autores principales: | , , |
|---|---|
| Formato: | Articulo Preprint |
| Lenguaje: | Inglés |
| Publicado: |
1995
|
| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/122994 |
| Aporte de: |
| Sumario: | Abstract We examine the contributions of odd-parity nuclear operators to the two-neutrino double beta decay 0+ → 0+ amplitude, which come from the P-wave Coulomb corrections to the electron wave functions and the recoil corrections to the nuclear currents. Although they are formally of higher order in αZ/2 or v/c of the nucleon than the usual Fermi and Gamow-Teller matrix elements, explicit calculations performed within the QRPA show that they are significant when compared with the experimental data. |
|---|