dorsal/arxiv
View SchemaWeak Magnetism in Two Neutrino Double Beta Decay
| Authors | C. Barbero, F. Krmpotić, A. Mariano, D. Tadić |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9810072 |
| URL | https://arxiv.org/abs/nucl-th/9810072 |
| DOI | 10.1016/S0370-2693(98)01391-4 |
| Journal | Phys.Lett. B445 (1999) 249-253 |
Abstract
We have extended the formalism for the two-neutrino double beta decay by including the weak-magnetism term, as well as other second-forbidden corrections. The weak magnetism diminishes the calculated half-lives in $\sim 10%$, independently of the nuclear structure. Numerical computations were performed within the pn-QRPA, for $^{76}Ge$, $^{82}Se$, $^{100} Mo$, $^{128}Te$ and $^{130}Te$ nuclei. No one of the second-forbidden corrections modifies significantly the spectrum shapes. The total reduction in the calculated half lives varies from 6% up to 32%, and strongly depend on the nuclear interaction in the particle-particle $S=1,T=0$ channel. We conclude that the higher order effects in the weak Hamiltonian would hardly be observed in the two-neutrino double beta experiments.
{
"annotation_id": "32d74358-cee9-427e-9fd5-dd0e6c86f3c3",
"date_created": "2026-03-02T18:00:24.524000Z",
"date_modified": "2026-03-02T18:00:24.524000Z",
"file_hash": "03e91e7f901152fa65ac87b26932a1f932ecc661737b8808eed3734331cfdb42",
"private": false,
"record": {
"abstract": "We have extended the formalism for the two-neutrino double beta decay by\nincluding the weak-magnetism term, as well as other second-forbidden\ncorrections. The weak magnetism diminishes the calculated half-lives in $\\sim\n10%$, independently of the nuclear structure. Numerical computations were\nperformed within the pn-QRPA, for $^{76}Ge$, $^{82}Se$, $^{100} Mo$, $^{128}Te$\nand $^{130}Te$ nuclei. No one of the second-forbidden corrections modifies\nsignificantly the spectrum shapes. The total reduction in the calculated half\nlives varies from 6% up to 32%, and strongly depend on the nuclear interaction\nin the particle-particle $S=1,T=0$ channel. We conclude that the higher order\neffects in the weak Hamiltonian would hardly be observed in the two-neutrino\ndouble beta experiments.",
"arxiv_id": "nucl-th/9810072",
"authors": [
"C. Barbero",
"F. Krmpoti\u0107",
"A. Mariano",
"D. Tadi\u0107"
],
"categories": [
"nucl-th",
"hep-ph"
],
"doi": "10.1016/S0370-2693(98)01391-4",
"journal_ref": "Phys.Lett. B445 (1999) 249-253",
"title": "Weak Magnetism in Two Neutrino Double Beta Decay",
"url": "https://arxiv.org/abs/nucl-th/9810072"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "c3f6b59c-c4fe-47b5-a162-5dc3cb32437d",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}