Four-neutrino mixing and Big-Bang Nucleosynthesis期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

按检索

Four-neutrino mixing and Big-Bang Nucleosynthesis

Authors:	S M Bilenky C Giunti W Grimus T Schwetz

Institution:	^a Joint Institute for Nuclear Research, Dubna, Russian Federation ^b Institut für Theoretische Physik, Technische Universität München, D-85748, Garching, Germany ^c INFN, Sezione di Torino, and Dipartimento di Fisica Teorica, Università di Torino, Via P. Giuria 1, I-10125, Torino, Italy ^d Institute for Theoretical Physics, University of Vienna, Boltzmanngasse 5, A-1090, Vienna, Austria

Abstract:	We investigate the Big-Bang Nucleosynthesis constraints on the elements of the neutrino mixing matrix which connect sterile with massive neutrino fields, in the framework of the two four-neutrino schemes that are favored by the results of neutrino oscillation experiments. We discuss the implications of these constraints for terrestrial short and long-baseline neutrino oscillation experiments and we present several possibilities of testing them in these experiments. In particular, we show that from the Big-Bang Nucleosynthesis constraints it follows that the transition is severely suppressed in short-baseline experiments, whereas its oscillation amplitude in long-baseline experiments is of order 1. We also propose a new parameterization of the four-neutrino mixing matrix U which is appropriate for the schemes under consideration.

Keywords:	PACS classification codes: 14 60 Pq 14 60 St 26 35 +c
本文献已被 ScienceDirect 等数据库收录！