A 3 × 2 Texture for Neutrino Oscillations and Leptogenesis

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dc.rights.license Attribution 3.0 Unported (CC BY 3.0) en_US
dc.contributor.author Okada, Nobuchika
dc.date.accessioned 2019-06-04T21:28:40Z
dc.date.available 2019-06-04T21:28:40Z
dc.date.copyright 2008
dc.date.issued 2008-03-06
dc.identifier.citation Brachmachari, B., Okada, N. (2008): A 3×2 Texture for Neutrino Oscillations and Leptogenesis. Physics Letters B, 660(5). DOI: https://doi.org/10.1016/j.physletb.2008.01.043 en_US
dc.identifier.issn 0370-2693
dc.identifier.uri http://ir.ua.edu/handle/123456789/5675
dc.description.abstract In an economical system with only two heavy right-handed neutrinos, we postulate a new texture for 3 x 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(_v_e)(_v_e) = (√( Δm^2_(solar)))/3 and (√( Δm^2_(atm))) for the hierarchical and the inverse-hierarchical 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(_e_3) which is accessible in future baseline neutrino oscillation experiments. en_US
dc.format.mimetype application/pdf en_US
dc.language English en_US
dc.language English en_US
dc.publisher Elsevier en_US
dc.rights.uri https://creativecommons.org/licenses/by/3.0/
dc.title A 3 × 2 Texture for Neutrino Oscillations and Leptogenesis en_US
dc.type text en_US
dc.rights.holder Elsevier B. V. en_US

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