CP Violation in Neutrinoless Double Beta Decay
نویسندگان
چکیده
We argue three-flavour neutrino mixing. We consider the neutrinos as Majorana particles and see how the neutrinoless double beta decay constrains the neutrino mixing angles. Our formulation is widely valid and is applied to the neutrino oscillation experiment.
منابع مشابه
Neutrinoless double beta decay and CP violation.
We study the relation between the Majorana neutrino mass matrices and the neutrinoless double beta decay when CP is not conserved. We give an explicit form of the decay rate in terms of a rephasing invariant quantity and demonstrate that in the presence of CP violation it is impossible to have vanishing neutrinoless double beta decay in the case of two neutrino generations (or when the third ge...
متن کاملNo-go for detecting CP violation via neutrinoless double beta decay
We present a necessary condition on the solar oscillation amplitude for CP violation to be detectable through neutrinoless double beta (0νββ) decay. It depends only on the fractional uncertainty in the νe–νe element of the neutrino mass matrix. We demonstrate that even under very optimistic assumptions about the sensitivity of future experiments to the absolute neutrino mass scale, and on the p...
متن کاملCP Violation in Neutrinoless Double Beta Decay and Neutrino Oscillation
Taking possible CP violations into account, we discuss constraints on lepton mixing angles obtained from neutrinoless double beta decay and from neutrino oscillation for three flavour Majorana neutrinos. From the CHORUS oscillation experiment, combined with the data from neutrinoless double beta decay, we show that the large angle solution for θ23 is improbable if the neutrino mass m3 of the th...
متن کاملLeptogenesis, neutrinoless double beta decay and terrestrial CP violation
Leptogenesis in left–right symmetric theories is studied. The usual see– saw mechanism is modified by the presence of a left–handed Higgs triplet. A simple connection between the properties of the light left–handed and heavy right–handed neutrinos is found. Predictions of this scenario for neutrinoless double beta decay and terrestrial CP violation in long–baseline experiments are given. These ...
متن کاملMeasuring leptonic CP Violation in Neutrinoless Double Beta Decay
We investigate under which circumstances one can show the existence of leptonic CP violation with the help of a positive or negative signal in neutrinoless double beta decay. The possibilities of cancellations are investigated for special mass hierarchies and the different solar solutions. The possibility that the mixing angle connected with the solar neutrino problem is smaller or larger than ...
متن کامل