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Arief Hermanto

Publications and source records attributed to Arief Hermanto.

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Extended GWS Model Using Left-Right Symmetry and Its Prediction on Neutrino Mass

We evaluate the predictions of the left-right symmetry model based on $SU(2)\otimes U(1)$ gauge group with one bidoublet and one doublet Higgs fields on the parity violation, charged leptons and neutrinos masses. Parity violation in the weak interaction is due to the very large $M_{W_{R}}$ mass compare to the $M_{W_{L}}$ mass. The charged leptons acquire a Dirac mass via ordinary Higgs mechanism, meanwhile the neutrinos acquire a very small Dirac masses via seesaw-like mechanism with values $m_{1}=0.000043$ eV, $m_{2}=0.008888$ eV, $m_{3}=0.014948$ eV when $ρ=8.4\times 10^{-11}$, or m_{1}=0.000014$ eV, $m_{2}=0.003032$ eV, $m_{3}=0.050990$ eV when $ρ=2.9\times 10^{-11}$.

hep-ph

Neutrino Mass Matrix from Seesaw Mechanism with Heavy Majorana Neutrino Subject to Texture Zero and Invariant Under a Cyclic Permutation

We evaluate the predictive power of the neutrino mass matrices arising from seesaw mechanism with heavy Majorana mass matrices subject to texture zero and satisfy a cyclic permutation invariant form to the solar neutrino mixing phenomena. From eight possible patterns of heavy Majorana neutrino mass matrix, we found that there is no heavy Majorana neutrino mass matrix to be invariant in form under a cyclic permutation. But, by imposing an additional assumption that at least one of the 2x2 sub-matrices of heavy Majorana neutrino mass matrix inverse having zero determinant, we found that only two of the eight possible patterns for heavy Majorana neutrino mass matrices to be invariant under a cyclic permutation. One of the two invariant heavy Majorana neutrino mass matrices could produces neutrino mass matrix $M_ν$ that can be used to explain the neutrino mixing phenomena for both solar and atmospheric neutrinos qualitatively.

hep-ph

Truly Minimal Left-Right Symmetry Model for Electroweak Interaction

By using two primary doublets and one induced bidoublet Higgs fields as a result of the interactions of the two doublets, we evaluate the predictive power of the left-right symmetry model based on $SU(2)_{L}\otimes SU(2)_{R}\otimes U(1)$ gauge group to the gauge bosons masses, leptons masses, and the structure of electroweak interactions. We found that the contribution of the right charge-current to the electroweak interaction is only around 0.0073 percent. The neutrino mass emerges naturally without introducing exotic particles. We obtain that the mixing angle $θ= 45^{0}$ for boson sector, $θ\approx 45^{0}$ for neutrino sector, and $θ= 0^{0}$ for electron sector. The parity violation in our model could be associated with the mass mixing in the bosons and leptons masses arise from the induced bidoublet Higgs via symmetry breaking. PACs: 12.60.Cn; 12.60.Fr

hep-ph