PROMPT NEUTRINOS AND OSCILLATIONS WITH MASS-DIFFERENCES OF COSMOLOGICAL RELEVANCE

被引：10

作者：

CONFORTO, G

机构：

[1] Università degli Studi di Urbino, Urbino

[2] INFN, Sezione di Firenze, Firenze

来源：

NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA A-NUCLEI PARTICLES AND FIELDS | 1990年 / 103卷 / 05期

关键词：

12.15.Ff - Quark and lepton masses and mixing; 14.60.Gh - Neutrinos and other neutral leptons; 98.80; -; Cosmology;

D O I：

10.1007/BF02789026

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：

Prompted by cosmological considerations, a scenario is considered in which the most massive neutrino has a mass m ν≲25 eV while the other neutrinos are much lighter. The possibility of oscillations characterized by Δm 2≲m 2 ν is examined, with the conclusion that ν e↔ν x oscillations (x≠μ and possibly x=τ) with sizeable mixing angles are not just allowed but in fact rather strongly indicated by the existing data on prompt neutrinos. The best values for the oscillation parameters Δm 2=(377±27±7) eV2, sin22α=0.48±0.10±0.05 are not in serious conflict with any of the existing limits. © 1990 Società Italiana di Fisica.

引用

页码：751 / 757

页数：7

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