IFLP   13074
INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
artículos
Título:
Relationships between nonmesonic-weak-decays in different hypernuclei
Autor/es:
FRANJO KRMPOTIC
Revista:
PHYS. REV. - C
Editorial:
AMER PHYSICAL SOC
Referencias:
Lugar: New York; Año: 2010 vol. 82 p. 55201 - 55209
ISSN:
0556-2813
Resumen:
Using as a tool the $s$-wave approximation ($\sWA$) it is demonstrated that the  nonmesonic weak decay transition rates $\Gamma_{n}$ and $\Gamma_{p}$ canbe expressed in all hypernuclei up to $^{29}_\Lambda $Si (and verylikely in heavier ones too) in the same way as in the $s$-shell hypernuclei, \ie as a linear combination of only three elementary transition rates. This finding leads to the analytic  predictionthat, independently of the transition mechanism, all  hypernucleithat are on the stability line (${\sf N}={\sf Z}$), \ie $^5_\Lambda $He, $^7_\Lambda $Li, $^9_\Lambda $Be, $^{11}_\Lambda$B,  $^{13}_\Lambda $C, $^{17}_\Lambda $O, $^{29}_\Lambda $Si, \etc~ should  roughly  have the same ratio $\Gamma_{n}/\Gamma_{p}$, the magnitude of which rapidly increases when one approaches the neutron drip-line (${\sf N}\gg {\sf Z}$), and opposite happens when one goes towards the proton drip-line (${\sf N}\ll {\sf Z}$).