Spontaneous R-Parity Violation, A(4) Flavor Symmetry and Tribimaximal Mixing

and as well as few additional Higgs chiral superfields which are singlet under MSSM gauge group and belong to triplet and singlet representation under the

A_4

flavor symmetry. R parity is broken spontaneously by the vacuum expectation values of the different sneutrino fields and hence we have neutrino-neutralino as well as neutrino-MSSM gauge singlet higgsino mixings in our model, in addition to the standard model neutrino- gauge singlet neutrino, gaugino-higgsino and higgsino-higgsino mixings. Because all of these mixings we have an extended neutral fermion mass matrix. We explore the low energy neutrino mass matrix for our model and point out that with some specific constraints between the sneutrino vacuum expectation values as well as the MSSM gauge singlet Higgs vacuum expectation values, the low energy neutrino mass matrix will lead to a tribimaximal mixing matrix. We also analyze the potential minimization for our model and show that one can realize a higher vacuum expectation value of the

SU(3)_c \times SU(2)_L \times U(1)_Y

singlet sneutrino fields even when the other sneutrino vacuum expectation values are extremely small or even zero.

Beyond Standard Model
Neutrino Physics
symmetry: A(4)
singlet: gauge
symmetry: flavor
neutrino: mass
R parity: violation
superfield: chiral
sneutrino: singlet
neutrino: singlet

References(107)

Figures(0)

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