arXiv subjects

Ph. Wilina

Publications and source records attributed to Ph. Wilina.

2 recordsLinked to original sources

arXiv2023

Deviations from $μ$-$τ$ symmetry using $Δ$(27) group on neutrino masses and mixings

Implication of neutrino mass model based on $Δ$(27) discrete flavor symmetry, on parameters of neutrino oscillations, CP violation and effective neutrino masses is studied using type-I seesaw mechanism. The Standard Model particle content is extended by adding two additional Higgs doublets, three right-handed neutrinos and two scalar triplets under $Δ$(27) symmetry predicting diagonal charged lepton mass matrix. This can generate the desired deviation from $μ- τ$ symmetry. The resulting neutrino oscillation parameters are well agreed with the latest global fit oscillation data. The sum of the three absolute neutrino mass eigenvalues, $\sum\limits_{i}|m_{i}|$ (i=1,2,3) is found to be consistent with that of the value given by latest Planck cosmological data, $\sum\limits_{i}|m_{i}|<$0.12 eV. The model further predicts effective neutrino masses for neutrinoless double beta decay, 4.15 meV $\leq m_{ee}\leq$ 30.6 meV, tritium beta decay, 8.4 meV $\leq m_β\leq$ 30.5 meV, Jarlskog invariant, $J_{CP}=\pm 0.022$ for CP violation, baryon asymmetry $Y_{B}=1.15 \times 10^{-10}$ for normal hierarchical case; and also 49.5 meV $\leq m_{ee}\leq$ 51.7 meV, 49.5 meV $\leq m_β\leq$ 51.4 meV, $J_{CP}=\pm 0.022$, $Y_{B}=1.12\times 10^{-10}$ for inverted hierarchical case respectively.

hep-ph↗

arXiv2022

Deviations from Tribimaximal and Golden Ratio mixings under radiative corrections of neutrino masses and mixings

The impact of renormalization group equations(RGEs) on neutrino masses and mixings at high energy scales in Minimal Supersymmetric Standard Model(MSSM) is studied using two different mixing patterns such as Tri-Bimaximal(TBM) mixing and Golden Ratio(GR) mixing in consistent with cosmological bound of the sum of three neutrino masses, $\sum _{i}|m_{i}|$. Magnifications of neutrino masses and mixing angles at low energy scale, are obtained by giving proper input masses, and mixing angles from TBM mixing matrix and GR mixing matrix at high energy scales. High energy scales, $M_{R}$ such as $10^{13}$GeV,$10^{14}$GeV,$10^{15}$GeV are employed in the analysis. The large solar($θ_{12}$) and atmospheric($θ_{23}$) neutrino mixing angles with zero reactor angle ($θ_{13}$) from both TBM mixing matrix and GR mixing matrix at high scale, can magnify the reactor angle($θ_{13}$) at low energy scale in 3$σ$ confidence level. Both cases of normal hierarchy(NH) and inverted hierarchy(IH) are addressed here. In normal hierarchical case, it is found that $θ_{23}\simeq51.1^{\circ}$ and that in inverted hierarchical case is $θ_{23}\simeq39.1^{\circ}$ in both mixing patterns. Possibility of $θ_{23}>45^{\circ}$ or $θ_{23}<45^{\circ}$ is observed at low scale. The analysis shows the validity of the two mixing patterns at high energy scale.

hep-ph↗