Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1998-11-09
Nucl.Phys.B549:3-15,1999
Physics
High Energy Physics
High Energy Physics - Phenomenology
14 pages, LATEX. The new version emphasizes the small angle \nu_e-\nu_s MSW oscillations instead of the large angle \nu_e-\nu_
Scientific paper
10.1016/S0550-3213(99)00143-1
We try to gain an understanding of the recent Superkamiokande data on neutrino oscillations and several other important phenomenological issues within the framework of supersymmetric $SU(4)_c \times SU(2)_L \times SU(2)_R$ ($\equiv G_{422}$). By supplementing $G_{422}$ with a U(1)-${\cal R}$ symmetry, we can provide an explanation of the magnitude $M_G$ ($\sim 10^{16}$ GeV) of the $G_{422}$- symmetry breaking scale, resolve the MSSM $\mu $ problem, and understand why proton decay has not been seen ($\tau_p \gg 10^{34}$ yr). The family dependent ${\cal R}$ - symmetry also helps provide an explanation of the charged fermion mass hierarchies as well as the magnitudes of the CKM matrix elements. Several additional heavy states in the mass range $10^4-10^7$ GeV are predicted, and the MSSM parameter $\tan \beta $ turns out to be of order unity. The atmospheric neutrino problem is explained through $\nu_{\mu}-\nu_{\tau}$ mixing with $\sin^2 2\theta_{\mu \tau}\simeq 1$. The resolution of the solar neutrino puzzle is via the small angle MSW oscillations and necessarily requires a sterile neutrino $\nu_s$ which, thanks to the ${\cal R}$ - symmetry, has a tiny mass.
Shafi Qaisar
Tavartkiladze Zurab
No associations
LandOfFree
Neutrino Oscillations and Other Key Issues in Supersymmetric SU(4)_c \times SU(2)_L \times$ SU(2)_R does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Neutrino Oscillations and Other Key Issues in Supersymmetric SU(4)_c \times SU(2)_L \times$ SU(2)_R, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Neutrino Oscillations and Other Key Issues in Supersymmetric SU(4)_c \times SU(2)_L \times$ SU(2)_R will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-11335