The smallest neutrino mass
نویسندگان
چکیده
We consider models where one Majorana neutrino is massless at tree level (like the see saw with two right-handed neutrinos), and compute the contribution to its mass m generated by two-loop quantum corrections. The result is m ∼ 10 eV in the SM and m ∼ 10 eV · (tan β/10) in the MSSM, compatible with the restricted range suggested by Affleck-Dine baryogenesis.
منابع مشابه
Large Lepton Mixings Induced by Sterile Neutrino
We assume that the mass matrix of active neutrinos has hierarchical form with small mixings, similar to quark mass matrix. We show that the large mixings between ν µ and ν τ as well as between ν e and certain combination of ν µ and ν τ required by the present data can appear due to the presence of a sterile neutrino state. Two realizations of this possibility are considered: (i) Large flavor mi...
متن کاملNeutrino oscillation studies with reactors
Nuclear reactors are one of the most intense, pure, controllable, cost-effective and well-understood sources of neutrinos. Reactors have played a major role in the study of neutrino oscillations, a phenomenon that indicates that neutrinos have mass and that neutrino flavours are quantum mechanical mixtures. Over the past several decades, reactors were used in the discovery of neutrinos, were cr...
متن کاملar X iv : h ep - p h / 03 10 32 6 v 1 2 9 O ct 2 00 3 Calculable CP - violating Phases in the Minimal Seesaw Model of Leptogenesis and Neutrino Mixing
We show that all nontrivial CP-violating phases can be determined in terms of three lepton flavor mixing angles and the ratio of ∆msun to ∆m 2 atm in the minimal seesaw model in which the Frampton-Glashow-Yanagida (FGY) ansatz is incorporated. This important point allows us to make very specific predictions for the cosmological baryon number asymmetry and CP violation in neutrino oscillations. ...
متن کامل2 00 3 Calculable CP - violating Phases in the Minimal Seesaw Model of Leptogenesis and Neutrino Mixing
We show that all nontrivial CP-violating phases can be determined in terms of three lepton flavor mixing angles and the ratio of ∆msun to ∆m 2 atm in the minimal seesaw model in which the Frampton-Glashow-Yanagida (FGY) ansatz is incorporated. This important point allows us to make very specific predictions for the cosmological baryon number asymmetry and CP violation in neutrino oscillations. ...
متن کامل6 v 2 2 2 N ov 2 00 3 Calculable CP - violating Phases in the Minimal Seesaw Model of Leptogenesis and Neutrino Mixing
We show that all nontrivial CP-violating phases can be determined in terms of three lepton flavor mixing angles and the ratio of ∆msun to ∆m 2 atm in the minimal seesaw model in which the Frampton-Glashow-Yanagida (FGY) ansatz is incorporated. This important point allows us to make very specific predictions for the cosmological baryon number asymmetry and CP violation in neutrino oscillations. ...
متن کامل