A 3 X 2 texture for neutrino oscillations and leptogenesis
| dc.creator | Brahmachari, Biswajoy | |
| dc.creator | Okada, Nobuchika | |
| dc.date | 2006-12-07 | |
| dc.date | 2008-02-05 | |
| dc.date.accessioned | 2026-07-07T11:22:17Z | |
| dc.date.available | 2026-07-07T11:22:17Z | |
| dc.description | In an economical system with only two heavy right handed neutrinos, we postulate a new texture for $3 \times 2$ Dirac mass matrix $m_D$. This model implies one massless light neutrino and thus displays only two patterns of mass spectrum for light neutrinos, namely hierarchical or inverse-hierarchical. Both the cases can correctly reproduce all the current neutrino oscillation data with a unique prediction $m_{ν_e ν_e} = \frac{\sqrt{Δm^2_{solar}}}{3}$ and $\sqrt{Δm^2_{atm}}$ for the hierarchical and the inverse-hierarchica cases, respectively, which can be tested in next generation neutrino-less double beta decay experiments. Introducing a single physical CP phase in $m_D$, we examine baryon asymmetry through leptogenesis. Interestingly, through the CP phase there are correlations between the amount of baryon asymmetry and neutrino oscillation parameters. We find that for a fixed CP phase, the hierarchical case also succeeds in generating the observed baryon asymmetry in our universe, plus a non-vanishing $U_{e3}$ which is accessible in future baseline neutrino oscillation experiments. | |
| dc.description | version accepted in Phys. Lett. B | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0612079 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0612079 | |
| dc.identifier | Phys.Lett.B660:508-514,2008 | |
| dc.identifier | doi:10.1016/j.physletb.2008.01.043 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/194516 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | A 3 X 2 texture for neutrino oscillations and leptogenesis | |
| dc.type | text |