Flavor-Changing Neutral Currents Induced by the Democratic Seesaw Mass Matrix

1997/01/10 by Yoshio Koide, Koide, Yoshio
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/9701261

15 pages, Latex, no figure

arxiv created 1997/01/10 · arxiv updated 2009/11/30

Abstract

Flavor-changing neutral currents (FCNC) are studied on the basis of a ``democratic seesa'' mass matrix model, which yields a singular enhancement of the top-quark mass m_t and can give reasonable quark masses and CKM matrix elements. The most exciting aspect of the model is that the structure of the 6 × 6 right-handed fermion mixing matrix in the up-quark sector, U^R_u, shows an abnormal structure in contrast to that of U^L_u. This causes characteristic effects on the right-handed FCNC concerned with top quark. A single top-quark production at future e⁺ e^- colliders, e⁺ + e^- → Z_R → t + c (t+c), is discussed.

Related

• Single top production via FCNC couplings at an e^-e⁺ collider with center-of-mass energy √(s)=240 GeV
• Democratic Seesaw Mass Matrix Model and New Physics
• Top quark flavor changing neutral currents at Future Linear Colliders
• Flavor Changing Neutral Currents and Left-Right Symmetric model
• Flavor democracy and quark mass matrices