GUT relation in neutrino-induced favor physics in SUSY SU(5) GUT

作者：Hisano J^*; Shimizu Y

来源：Physics Letters B, 2003, 565(1-4): 183-192.

DOI：10.1016/S0370-2693(03)00638-5

In the SUSY SU(5) GUT with the right-handed neutrinos, the neutrino Yukawa coupling induces the flavor-violating mass terms for the right-handed down squarks and left-handed sleptons, and they lead to imprint on the flavor physics in the hadronic and leptonic sectors. In this Letter we study CP violation in B-d(0) and B-s(0), which is induced by the tau-neutrino Yukawa coupling. In particular, we notice the correlation of the CP asymmetries in B-d(0)--> phiK(s) (S-phiKs) and B-s(0) --> J/psiphi (S-J/psiphi) with other observables, such as Br(tau --> mugamma), the muon EDM (d(mu)), and the mixing-induced CP asymmetry in B-d(0) --> M(s)(0)gamma (A(bsg)), since they have a common origin of the CP and flavor violation. The measurements are expected to play a significant role for consistency check of the SUSY SU(5) GUT. The hierarchical right-handed neutrino masses make the correlation better. We find that the current bound on Br(tau --> mugamma) constrains the allowed region for S-phiKs in this model.

• 出版日期2003-7-17