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H. Fritzsch

Publications and source records attributed to H. Fritzsch.

21 records · Page 2Linked to original sources
arXiv1995

Lepton Mass Hierarchy and Neutrino Oscillations

Starting from the symmetry of lepton flavor democracy, we propose and discuss a simple pattern for the mass generation and flavor mixing of the charged leptons and neutrinos. The three neutrino masses are nearly degenerate, and the flavor mixing angles can be calculated. The observed deficit of solar and atmospheric neutrinos can be interpreted as a consequence of the near degeneracy and large oscillations of $ν_e$, $ν_μ$ and $ν_τ$ in the vacuum. Our {\it Ansatz} can also accommodate the cosmological requirement for hot dark matter and the current data on neutrinoless $ββ$-decay.

hep-ph↗
arXiv1994

On Measuring $CP$ Violation in Neutral $B$-meson Decays at the $Υ(4S)$ Resonance

Within the standard model we carry out an analysis of $CP$-violating observables in neutral $B$-meson decays at the $Υ(4S)$ resonance. Both time-dependent and time-integrated $CP$ asymmetries are calculated, without special approximations, to meet various possible measurements at symmetric and asymmetric $e^{+}e^{-}$ $B$ factories. We show two ways to distinguish between direct and indirect $CP$-violating effects in the $CP$-eigenstate channels such as $B^{0}_{d}/\bar{B}^{0}_{d}\rightarrow π^{+}π^{-}$ and $π^{0} K_{S}$. Reliable knowledge of the Cabibbo-Kobayashi-Maskawa phase and angles can in principle be extracted from measurements of some non-$CP$-eigenstate channels, e.g. $B^{0}_{d}/\bar{B}^{0}_{d}\rightarrow D^{\pm}π^{\mp}$ and $\stackrel{(-)}{D}$$^{(*)0}K_{S}$, even in the presence of significant final-state interactions.

hep-ph↗