Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-06-18
AIPConf.Proc.939:286-293,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
8 pages, 2 figures. Talk given at the International Workshop on Theoretical and Experimental Physics, IIT (Roorkee), March 200
Scientific paper
10.1063/1.2803817
Proposed symmetry relations, e.g., quark-lepton complementarity (QLC) or tribimaximal mixing (TBM), need to be imposed at a high scale $\wedge \sim 10^{12}$ GeV characterising the large masses of right-handed neutrinos required to implement the seesaw mechanism. RG evolution down to the laboratory scale $\lambda \sim 10^3$ GeV, generically prone to spoil these relations and their predicted neutrino mixing patterns, can be made to preserve them by appropriately constraining the Majorana phases $\alpha_{2,3}$. This is explicitly demonstrated in the MSSM for two versions of QLC and two versions of TBM. A preference for $\alpha_2 \simeq \pi$ (i.e. $m_1 \simeq - m_2$) emerges in each case. Discrimination among the four cases is shown to be possible by future measurements of $\theta_{13}$.
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