Sissa 18/2006/ep a Comment on the Measurement of Neutrino Masses in Β-decay Experiments
نویسنده
چکیده
We discuss the physics potential of future tritium β-decay experiments having a sensitivity to a neutrino mass ∼ √ |∆m23| ∼ 5 × 10−2 eV. The case of three-neutrino mixing is analised. A negative result of such an experiment would imply that the neutrino mass spectrum is of normal hierarchical type. The interpretation of a positive result would depend on the value of the lightest neutrino mass; if the lightest neutrino mass satisfies the inequality min(mj) ≪ √ |∆m23|, it would imply that the neutrino mass spectrum is of the inverted hierarchical type.
منابع مشابه
SISSA 18/2006/EP hep-ph/0603178 A COMMENT ON THE MEASUREMENT OF NEUTRINO MASSES IN β-DECAY EXPERIMENTS
We discuss the physics potential of future tritium β-decay experiments having a sensitivity to a neutrino mass ∼ √ |∆m23| ∼ 5 × 10−2 eV. The case of three-neutrino mixing is analised. A negative result of such an experiment would imply that the neutrino mass spectrum is of normal hierarchical type. The interpretation of a positive result would depend on the value of the lightest neutrino mass; ...
متن کاملar X iv : h ep - p h / 02 07 28 1 v 2 3 1 Ju l 2 00 2 ( ββ ) 0 ν - decay : a possible test of the nuclear matrix element calculations
(ββ) 0 ν-decay: a possible test of the nuclear matrix element calculations Abstract The existing calculations of the nuclear matrix elements of the neutrinoless double β-decay differ by about a factor three. This uncertainty prevents quantitative interpretation of the results of experiments searching for this process. We suggest here that the observation of the neutrinoless double β-decay of se...
متن کاملar X iv : h ep - p h / 02 07 28 1 v 1 2 3 Ju l 2 00 2 ( ββ ) 0 ν - decay , the problem of the nuclear matrix elements
(ββ) 0 ν-decay, the problem of the nuclear matrix elements Abstract The existing calculations of the nuclear matrix elements of the neu-trinoless double β-decay differ by about a factor three. This uncertainty prevents quantative interpretation of the results of experiments searching for this process. We suggest here that the observation of the neutrinoless double β-decay of several nuclei in t...
متن کاملNeutrinoless double-β decay with three or four neutrino mixing
Considering the scheme with mixing of three neutrinos and a mass hierarchy that can accommodate the results of solar and atmospheric neutrino experiments, it is shown that the results of solar neutrino experiments imply a lower bound for the effective Majorana mass in neutrinoless double-β decay, under the natural assumptions that massive neutrinos are Majorana particles and there are no unlike...
متن کاملTheory and Phenomenology of Neutrino Mixing
We review some fundamental aspects of the theory of neutrino masses and mixing. The results of neutrino oscillation experiments are interpreted as evidence of three-neutrino mixing. Implications for the mixing parameters and the neutrino masses are discussed, with emphasis on the connection with the measurements of the absolute values of neutrino masses in beta decay and neutrinoless double-bet...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2006