ACCOMMODATING SOLAR AND ATMOSPHERIC NEUTRINO DEFICITS, HOT DARK-MATTER, AND A DOUBLE-BETA DECAY SIGNAL

被引:93
作者
CALDWELL, DO [1 ]
MOHAPATRA, RN [1 ]
机构
[1] UNIV MARYLAND,DEPT PHYS,COLLEGE PK,MD 20742
来源
PHYSICAL REVIEW D | 1994年 / 50卷 / 05期
关键词
D O I
10.1103/PhysRevD.50.3477
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Neutrino mass explanations of the solar and atmospheric neutrino deficits and a hot dark matter component require one of three patterns of those masses, as already pointed out by us. Recently there have been indications of a nonvanishing amplitude for neutrinoless double beta decay. If this additional hint of neutrino mass is true, it would make even less likely the one unfavored pattern (a sterile neutrino giving warm, rather than hot dark matter), which would alter another by making the nu(e) a contributor to the hot dark matter, and would make the third (nu(e), nu(mu), and nu(tau), approximately degenerate) much more likely than previously. For this third case we construct a gauge model consistent with other weak interaction data. This model utilizes a more general version of the seesaw mechanism, which is very likely to be the source of neutrino mass, if this degenerate pattern is correct. A new supernova constraint is utilized, and implications and tests of the different mass matrices are noted.
引用
收藏
页码:3477 / 3483
页数:7
相关论文
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