【摘要】 我们研究了包括四代的SU(7)大统一模型的CP破坏问题。结果表明,适当地选取夸克矩阵元及其复相位a_i(如文献[2]那样),可以得到与实验相符的CP破坏,并且,适当地选取Hoggs势(如文献[2]那样)可以使强CP破坏参数θ在树图级为零而与实验相符。更多还原

【Abstract】 We discuss the CP violation problem of SU(7) models of Grand Unified Theoryincluding four genarations. It is shown that if we properly choose the complex phaseangles in quark mass matrix elements, we are able to obtain the CP violation phaseangle which agrees well with the experimental value. If the Higgs potential is pro-perly choosen we find that the strong CP violation parameter θ is equal to zero atthe tree level.更多还原