ΔL = 2 hyperon semileptonic decays
We compute the rates of semileptonic B<sub>A</sub> → B<sub>B</sub>l⁻l⁻ (l = e or μ) hyperon transitions in a model where intermediate states involve loops of baryons and a Majorana neutrino. These rates turn out to be well below present experimental bounds and other theoretic...
Guardado en:
| Autores principales: | , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2007
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/126314 |
| Aporte de: |
| Sumario: | We compute the rates of semileptonic B<sub>A</sub> → B<sub>B</sub>l⁻l⁻ (l = e or μ) hyperon transitions in a model where intermediate states involve loops of baryons and a Majorana neutrino. These rates turn out to be well below present experimental bounds and other theoretical estimates. From the experimental upper limit on the Ξ⁻ → pμ⁻μ⁻ decay, we derive the bound <m <sub>μμ</sub>> ≤ 22 TeV for the effective Majorana mass of the muon neutrino. Also, an estimate of background contributions for these decays due to the allowed B<sub>A</sub> → B<sub>B</sub>l⁻l⁻ ν⁻ν⁻ decays is provided. |
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