Quark-Lepton Masses and the Ckm Matrix in a String Inspired Model

Naoyuki Haba, Chuichiro Hattori, Masahisa Matsuda +2

In the context of the Calabi-Yau string model we discuss the origin of characteristic pattern of quark-lepton masses and the CKM matrix. The discrete $R$-symmetry $Z_{2k+1} \times…