Naumov- and Toshev-like relations in the renormalization-group evolution of quarks and Dirac neutrinos  

作　　者：Zhi-zhong Xing Shun Zhou 邢志忠;周顺(Institute of High Energy Physics, Chinese Academy of Sciences;School of Physical Sciences, University of Chinese Academy of Sciences;Center for High Energy Physics, Peking University)

机构地区：[1]Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China [2]School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China [3]Center for High Energy Physics,Peking University,Beijing 100871,China

出　　处：《Chinese Physics C》2018年第10期38-43,共6页中国物理C（英文版）

基　　金：Supported by the National Natural Science Foundation of China(11775231) and (11775232);the National Youth Thousand Talents Program;the CAS Center for Excellence in Particle Physics

摘　　要：In an analytical way of studying matter effects on neutrino oscillations, the Naumov and Toshev relations have been derived to respectively link the Jarlskog invariant of CP violation and the Dirac phase in the standard parametrization of the 3×3 flavor mixing matrix to their matter-corrected counterparts. Here we show that there exist similar relations for Dirac neutrinos and charged leptons evolving with energy scales via the one-loop renormalizationgroup （RG） equations in the tau-dominance approximation, and for the running behaviors of up- and down-type quarks in the top-dominance approximation, provided a different parametrization is taken into account.In an analytical way of studying matter effects on neutrino oscillations, the Naumov and Toshev relations have been derived to respectively link the Jarlskog invariant of CP violation and the Dirac phase in the standard parametrization of the 3×3 flavor mixing matrix to their matter-corrected counterparts. Here we show that there exist similar relations for Dirac neutrinos and charged leptons evolving with energy scales via the one-loop renormalizationgroup （RG） equations in the tau-dominance approximation, and for the running behaviors of up- and down-type quarks in the top-dominance approximation, provided a different parametrization is taken into account.

关 键 词：fermion flavor mixing CP violation renormalization-group equations 

分 类 号：O572.2[理学—粒子物理与原子核物理]