Majorana neutrino mass structure induced by rigid instantons on toroidal orbifold
نویسندگان
چکیده
منابع مشابه
Majorana neutrino mass
We treat 0+ → 2+ 0νββ decays taking into account recoil corrections to the nuclear currents. The decay probability can be written as a quadratic form of the effective coupling constants of the right-handed leptonic currents and the effective neutrino mass. We calculate the nuclear matrix elements for the 0+ → 21 0νββ decays of 76Ge and 100Mo, and demonstrate that the relative sensitivities of 0...
متن کاملElectron-Neutrino Majorana Mass and Solar Neutrino Oscillations
Assuming the Majorana masses of νe and the linear combination cντ − sνμ to be equal from their couplings to a heavy scalar triplet ξ, I show that their radiative splitting is given by ∆m2/m2ν = (3c /4π)(GF / √ 2)m2τ ln(m 2 ξ/m 2 W ). This is applicable to the small-angle matter-enhanced oscillation solution of the solar neutrino deficit and restricts mν to be between 0.20 and 0.36 eV if c 2 = 0...
متن کاملUpper bound on the scale of Majorana-neutrino mass generation.
We derive a model-independent upper bound on the scale of Majorana-neutrino mass generation. The upper bound is 4pi (nu2)/square root3 m(nu), where nu approximately 246 GeV is the weak scale and m(nu) is the Majorana-neutrino mass. For neutrino masses implied by neutrino oscillation experiments, all but one of these bounds are less than the Planck scale, and they are all within a few orders of ...
متن کاملRadiatively Induced Neutrino Majorana Masses and Oscillation
We review and remark on models of radiatively induced neutrino Majorana masses and oscillations. It is pointed out that while the models are capable of accounting for the observed solar and atmospheric neutrino oscillation, some of them can also induce neutrinoless double beta decay and μ− – e+ conversion in nuclei large enough to be potentially observable in the near future. With the recent re...
متن کاملThe Absolute Neutrino Mass Scale, Neutrino Mass Spectrum, Majorana CP-Violation and Neutrinoless Double-Beta Decay
Assuming 3-ν mixing, massive Majorana neutrinos and neutrinoless double-beta ((ββ)0ν -) decay generated only by the (V −A) charged current weak interaction via the exchange of the three Majorana neutrinos, we briefly review the predictions for the effective Majorana mass || in (ββ)0ν -decay and reanalyse the physics potential of future (ββ)0ν -decay experiments to provide information on the ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review D
سال: 2016
ISSN: 2470-0010,2470-0029
DOI: 10.1103/physrevd.93.065029