Seminar detail: CKM matrix and FCNC suppression in SO(5)×U(1)×SU(3) gauge-Higgs unification

Date&Time	Tue Nov 26 2019 (17:00 - 18:00)
Speaker	Yutaka Hosotani
Affiliation	Osaka University
Title	CKM matrix and FCNC suppression in SO(5)×U(1)×SU(3) gauge-Higgs unification
Abstract	The Cabibbo-Kobayashi-Maskawa (CKM) mixing matrix and ﬂavor-changing neutral currents (FCNC's) in the quark sector are examined in the GUT inspired SO(5) × U(1) × SU(3) gauge-Higgs uniﬁcation in which the 4D Higgs boson is identiﬁed with the Aharonov-Bohm phase in the ﬁfth dimension. Gauge invariant brane interactions play an important role for the ﬂavor mixing in the charged-current weak interactions. The CKM matrix is reproduced except that the up quark mass needs to be larger than the observed one. FCNC's are naturally suppressed as a consequence of the gauge invariance, with a factor of order $10^{−6}$.
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