A New Type of Accessible Environmental Influences on Neutrino Oscillation

作     者：CHANGChao－Hsi DONGHUi－Shi 等 

作者机构：InstituteofTheoreticalPhysicsAcademiaSinicaP.O.Box2735Beijing100080China DepartmentofPhysicsNankaiUniversityTianjin300071China 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2001年第35卷第5期

页      面：557-562页

核心收录：

学科分类：07[理学] 0704[理学-天文学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

基　　金：国家自然科学基金 

主　　题：neutrino oscillation pure and mixed states extra medium effects 

摘      要：Considering a new type of environment influences, we use a two-energy-level quantum system to investigate neutrino oscillations in medium. Besides the matter effects derived by Wolfenstein, there may exist extra terms due to a unitary evolution of the system between pure and mixed states, so the evolution equation is modified obviously. We show that the extra terms may play some role and induce observable effects in solar neutrino problem, especially, in the long baseline neutrino oscillation experiments which are under serious consideration recently, if the parameters fall into a suitable region.