Proton Stability in Low-Scale Extra-Dimensional Grand Unified Theories Mitsuru Kakizaki (University of Toyama) February 13, 2014 Mitsuru KAKIZAKI 1 The 2nd Winter Toyama Mini-Workshop on Particle Physics and Cosmology "Basis of the Universe with Revolutionary Ideas 2014 (BURI 2014)” February 13, 2014, University of Toyama Ref.: MK, Phys. Rev. D88, 095017 (2013)
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Proton Stability in Low-Scale Extra-Dimensional Grand ... · Grand Unified Theories Mitsuru Kakizaki (University of Toyama) February(13,(2014( Mitsuru(KAKIZAKI 1 The 2nd Winter Toyama
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Proton Stability in Low-Scale Extra-Dimensional
Grand Unified Theories
Mitsuru Kakizaki (University of Toyama)
February 13, 2014 Mitsuru KAKIZAKI 1
The 2nd Winter Toyama Mini-Workshop on Particle Physics and Cosmology "Basis of the Universe with Revolutionary Ideas 2014 (BURI 2014)”
February 13, 2014, University of Toyama
Ref.: MK, Phys. Rev. D88, 095017 (2013)
Contents
1. Motivation 2. Localizing Fermions in Extra Dimensions (Review)
3. Localizing X-bosons and Proton Stability
4. Summary
February 13, 2014 Mitsuru KAKIZAKI 2
1. Motivation
February 13, 2014 Mitsuru KAKIZAKI 3
Discovery of a Higgs boson at the CERN LHC The Standard Model (SM) is established
as a low-energy effective theory below GeV O(100)
Theoretical puzzles of the SM include Unexplained structure of the
SM gauge bosons and fermions Quantization of the electric charges
We need a more fundamental theory [www.physics.gla.ac.uk]
Idea of Grand unified theories (GUTs) Unification of gauge groups: Unification of quarks and leptons: