Generation of large lepton asymmetries

被引：75
作者：
Casas, A
Cheng, WY
Gelmini, G
机构：
[1] CSIC, Inst Estructura Mat, Madrid 28006, Spain
[2] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA
来源：
NUCLEAR PHYSICS B | 1999年 / 538卷 / 1-2期
关键词：
D O I：
10.1016/S0550-3213(98)00606-3
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
We present here a realistic model to produce a very large lepton asymmetry L similar or equal to 10(-2)-1, without producing a large baryon asymmetry. The model is based on the Affleck and Dine scenario, in which the field acquiring a large vacuum expectation value during inflation is an s-neutrino right. We require L to be large enough for the electroweak symmetry to be spontaneously broken at all temperatures after inflation, with the consequent suppression of sphaleron transitions. (C) 1999 Published by Elsevier Science B.V.
引用
收藏
页码：297 / 308
页数：12
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