Properties of fermion mixings in intersecting D-brane models Academic Article uri icon


  • We consider the Yukawa couplings for quarks and leptons in the context of Pati-Salam model using intersecting D-brane models where the Yukawa coupling matrices are rank one in a simple choice of family replication. The CKM mixings can be explained by perturbing the rank 1 matrix using higher order terms involving new Higgs fields available in the model. We show that the near bi-large neutrino mixing angles can be naturally explained, choosing the light neutrino mass matrix to be type II seesaw dominant. The predicted value of Ue3 is in the range ≃0.05-0.15. In the quark sector, V cb is naturally close to the strange/bottom quark mass ratio and we obtain an approximate relation VubVcb≃(m s/mb)2Vus. The geometrical interpretations of the neutrino mixings are also discussed. © 2006 Elsevier B.V. All rights reserved.

published proceedings

  • Physics Letters B

author list (cited authors)

  • Dutta, B., & Mimura, Y

citation count

  • 15

complete list of authors

  • Dutta, Bhaskar||Mimura, Yukihiro

publication date

  • February 2006