Radiative contribution to neutrino masses and mixing in $\mu\nu$SSM
| Autor: | Ghosh, Pradipta, Dey, Paramita, Mukhopadhyaya, Biswarup, Roy, Sourov |
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| Rok vydání: | 2010 |
| Předmět: | |
| Zdroj: | JHEP 1005:087,2010 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1007/JHEP05(2010)087 |
| Popis: | In an extension of the minimal supersymmetric standard model (popularly known as the $\mu\nu$SSM), three right handed neutrino superfields are introduced to solve the $\mu$-problem and to accommodate the non-vanishing neutrino masses and mixing. Neutrino masses at the tree level are generated through $R-$parity violation and seesaw mechanism. We have analyzed the full effect of one-loop contributions to the neutrino mass matrix. We show that the current three flavour global neutrino data can be accommodated in the $\mu\nu$SSM, for both the tree level and one-loop corrected analyses. We find that it is relatively easier to accommodate the normal hierarchical mass pattern compared to the inverted hierarchical or quasi-degenerate case, when one-loop corrections are included. Comment: 51 pages, 14 figures (58 .eps files), expanded introduction, other minor changes, references added |
| Databáze: | arXiv |
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