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Baryogenesis without grand unification
A mechanism is pointed out to generate cosmological baryon number excess without resorting to grand unified theories. The lepton number excess originating from Majorana mass terms may transform intoExpand
Horizontal Symmetry and Masses of Neutrinos
A striking and puzzling phenomenon 1s that neutrinos appear nearly massless in contrast to all other leptons and quarks. The left-handed neutrinos may combine with their chiral partners (if theyExpand
Physics of Neutrinos
Ever since it was first proposed the neutrino has played a crucial role in the advancement of our understanding of particle physics. The neutrino was first conjectured by W. Pauli in a letter writtenExpand
Leptogenesis as the origin of matter
▪ Abstract We explore in some detail the hypothesis that the generation of a primordial lepton-antilepton asymmetry (Leptogenesis) early on in the history of the Universe is the root cause for theExpand
Physics interplay of the LHC and the ILC
Physics at the Large Hadron Collider (LHC) and the International e(+)e(-) Linear Collider (ILC) will be complementary in many respects, as has been demonstrated at previous generations of hadron andExpand
Gravitino dark matter in R-parity breaking vacua
We show that in the case of small R-parity and lepton number breaking couplings, primordial nucleosynthesis, thermal leptogenesis and gravitino dark matter are naturally consistent for gravitinoExpand
Nucleon decay in the minimal supersymmetric SU(5) grand unification
We make a detailed analysis on the nucleon decay in the minimal supersymmetric SU(5) grand unified model. We find that a requirement of the unification of three gauge coupling constants leads to aExpand
Horizontal gauge symmetry and masses of neutrinos
Physics of Neutrinos: and Application to Astrophysics
1 Historical Introduction.- 2 Standard Theory of Electroweak Interactions.- 3 Applications of the Electroweak Theory.- 4 Neutrino Sources and Detection.- 5 Properties of the Neutrino.- 6 MassiveExpand
Upper bound of the lightest Higgs boson mass in the minimal supersymmetric standard model
In the minimal supersymmetric standard madel, it is shown that a radiative correction of the top and stop loops gives a finite, but non-negligible contribution to Higgs scalar masses if m, "'"Expand