Research PapersNo Access

NONZERO θ₁₃ FROM THE TRIANGULAR ANSATZ AND LEPTOGENESIS

H. B. BENAOUM

Prince Mohammad Bin Fahd University, Al-Khobar 31952, Saudi Arabia

https://doi.org/10.1142/S0217732312501519Cited by:3 (Source: Crossref)

Abstract

Recent experiments indicate a departure from the exact tri-bimaximal mixing by measure ring definitive nonzero value of θ₁₃. Within the framework of type I seesaw mechanism, we reconstruct the triangular Dirac neutrino mass matrix from the μ - τ symmetric mass matrix. The deviation from μ - τ symmetry is then parametrized by adding dimensionless parameters y_i in the triangular mass matrix. In this parametrization of the neutrino mass matrix, the nonzero value θ₁₃ is controlled by Δy = y₄ - y₆. We also calculate the resulting leptogenesis and show that the triangular texture can generate the observed baryon asymmetry in the universe via leptogenesis scenario.

Keywords:

PACS: 14.60.Pq, 11.30.Hv, 98.80.Cq

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