Flavor Mixings in Supersynmetric

In the supersymmetric unification model，in which the massless sector contains extra particles beyond those in MSSM，there appear state-mixings between quarks(Loptons)and extra particles.We showed that the nontrivial texture of the CKM matrix of quarks emerges as a consequence of the mixings between the down-type quarks and colored Higges.In the lepton sector，although these occur mixings between leptons and down-type Higges，seesaw mechanism and hierarchical Majorana masses play an essential role in the MNS matris。The significant difference between the MNS matrix and the CKM matrix.Is naturally understood in the framework of the string inspired SU(6)×SU(2)I D 2 R I D 2 model.SUSY breaking parameters which are expected to be universal，are closely linked to the mediation mechanisms of SUSY breaking..We proposed a new model of mediating SUSY breaking in the context of the weakly coupled heterotic string.The breakdown of SUSY in the hidden sector is transmitted to anti-generation fields via gravitational interactions.Subsequent transmission of the breaking to the MSSM sector occurs via gauge interactions.It is shown that the mass spectra of superparticles are phenomenologically viable.

In the supersymmetric unification model, in which the massless sector contains extra particles beyond those in MSSM, there appear state-mixings between quarks(loptons) and extra particles. We showed that the nontrivial texture of the CKM matrix of quarks emerges as a consequence of the mixings between the down-type quarks and colored Higges. In the lepton sector, although these occur mixings between leptons and down-type Higges, seesaw mechanism and hierarchical Majorana masses play an essential role in the MNS matris. The significant difference between the MNS matrix and the CKM matrix. Is naturally understood in the framework of the string inspired SU(6) × SU(2)ィイD2RィエD2model. SUSY breaking parameters which are expected to be universal, are closely linked to the mediation mechanisms of SUSY breaking.. We proposed a new model of mediating SUSY breaking in the context of the weakly coupled heterotic string. The breakdown of SUSY in the hidden sector is transmitted to anti-generation fields via gravitational interactions. Subsequent transmission of the breaking to the MSSM sector occurs via gauge interactions. It is shown that the mass spectra of superparticles are phenomenologically viable.