Outgassing

Neutrinoless Double-Beta Decay: Status and Prospects

“…(19) is a recent summary. The observation of these modes typically require either non-relativistic neutrinos (65,66,67) or new interactions (68,69). For heavier neutrinos, the effects are observable only in certain mass ranges, such as in meson or W decays (70).…”

Conditions for statistical determination of the neutrino mass spectrum in radiative emission of neutrino pairs in atoms

“…This, in turn, opens up the possibility of precision neutrino mass spectroscopy, as proposed by Ref. [21][22][23].…”

“…Consequently once the six ω ij are measured, the spectrum of the neutrino masses could be fully identified. It has been argued that this method is ultimately capable of determining the neutrino mass scale, the mass ordering, the Dirac vs Majorana nature, as well as of measuring the Majorana CP violating phases [21][22][23].…”

Observables in Neutrino Mass Spectroscopy Using Atoms

“…Determining the absolute scale of neutrino masses, the type of neutrino mass spectrum, which can be either with normal or inverted ordering 1 (NO or IO), the nature (Dirac or Majorana) of massive neutrinos, and getting information about the Dirac and Majorana CP violation phases in the neutrino mixing matrix, are the most pressing and challenging problems of the future research in the field of neutrino physics (see, e.g., [2]). It is remarkable that all these neutrino mass and mixing observables and massive neutrino properties can be determined, in principle, as we will discuss in the present article, in a single atomic physics experiment by using the process of cooperative de-excitation of atoms in a metastable level into emission mode of single photon plus a neutrino pair [3,4]. This process is usually called radiative emission of neutrino pair (RNEP).…”

“…If neutrino are Majorana particles, we have νi ≡ ν i and (ν i + ν j ) are the Majorana neutrinos with masses m i and m j . The proposed experimental method is to measure, under irradiation of two counter-propagating trigger lasers, the continuous photon (γ) energy spectrum below each of the six thresholds ω i j corresponding to the production of the six different pairs of neutrinos, ν 1 ν 1 , ν 1 ν 2 ,..., ν 3 ν 3 : ω < ω i j , ω being the photon energy, and [3,4]…”