Chankowski P H, Ioannisian A N, Pokorski S, Valle J W
Institute of Theoretical Physics, Warsaw University, Ul. Hoza 69, 00-681, Warsaw, Poland.
Phys Rev Lett. 2001 Apr 16;86(16):3488-91. doi: 10.1103/PhysRevLett.86.3488.
Present neutrino data are consistent with neutrino masses arising from a common seed at some "neutrino unification" scale M(X). Such a simple theoretical ansatz naturally leads to quasidegenerate neutrinos that could lie in the electron-volt range with neutrino mass splittings induced by renormalization effects associated with supersymmetric thresholds. In such a scheme the leptonic analog of the Cabibbo angle straight theta(middle dot in circle) describing solar neutrino oscillations is nearly maximal. Its exact value is correlated with the smallness of straight theta(reactor). The two leading mass-eigenstate neutrinos present in nu(e) form a pseudo-Dirac neutrino, avoiding conflict with neutrinoless double beta decay.
目前的中微子数据与在某个“中微子统一”尺度M(X)下由一个共同种子产生的中微子质量相一致。这样一个简单的理论假设自然会导致准简并中微子，其质量可能处于电子伏特范围，中微子质量分裂由与超对称阈值相关的重整化效应引起。在这样的方案中，描述太阳中微子振荡的卡比博角θ⊙的轻子类似物几乎是最大的。其精确值与θ反应堆的小值相关。νe中存在的两个主要质量本征态中微子形成一个赝狄拉克中微子，避免了与无中微子双β衰变的冲突。
