A NATURALLY HEAVY 4TH GENERATION NEUTRINO

被引:76
作者
HILL, CT
PASCHOS, EA
机构
[1] Fermi National Accelerator Laboratory, Batavia, IL 60510
关键词
D O I
10.1016/0370-2693(90)91493-U
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We propose that there exists a fourth generation, all neutrinos have Dirac masses of order the corresponding charge lepton partner, and right-handed neutrinos have Majorana masses of order the weak scale. The see-saw mechanism then implies the light neutrino masses are O(mMlepton2/M), while a fourth generation neutrino is heavy with mass O(M)∼O(Mw), and would not have been seen in the Z0 width a LEP. Such a solution appears to be compatile with all known phenomenological and cosmological constraints, and predicts masses for neutrinos near their current upper bounds. © 1990.
引用
收藏
页码:96 / 100
页数:5
相关论文
共 14 条
[11]  
USIDA N, 1986, PHYS REV LETT, V57, P1694
[12]  
WEGENER D, 1988, 16 P INS S NEUTR MAS
[13]  
Yanagida T., 1979, P WORKSHOP UNIFIED T
[14]  
YOST GP, 1989, PHYS LETT B, V204, P1