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Belle II の物理 (high-ish scale) SUSY
Yukihiro Mimura (National Taiwan University) Talk at Flavor Physics Workshop 2017 (10.31)
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Today’s Menu Introduction LHC results Implications to Flavor Physics
Belle II physics Heavier Higgs, New FCNC source, GUT Exotics Baryon/lepton number violation? Conclusion
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LHC results
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Gluino mass bound Unified gaugino mass at GUT scale
If gaugino masses are unified,
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Good News & Bad News for “highish scale” SUSY
Everything is consistent. (125 GeV Higgs mass, FCNC suppression, Cosmology) Bad News: May not be observed at LHC (run-II) Little hierarchy Problem (Cancellation in the minimization condition)
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Good News & Bad News from 125 GeV Higgs mass
Stop mass and/or mixing (A-term) are large They are sensitive to radiative EWSB. Good News: Consistent with no sign in direct SUSY search Implication to flavor physics
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RGE-induced off-diagonal elements in sfermion mass matrices
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125GeV Higgs mass in MSSM Sfermions are heavy (10 TeV ?).
Sfermions are 2-3 TeV, but A0 is large (A0 ~ 5 TeV) It can still affect to “accurate” flavor physics via the RGE-induced FCNCs. (So long ! ) or
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Belle II Physics
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, 2. , CP violation , Lepton flavor violation 6. .
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Quark-lepton unification?
, 2. , CPV , LFV . New FCNC/CP source Left- or right-handed? Quark-lepton unification? Lepto-quark?
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CMSSM NUHM1 NUHM2 Very roughly, for For large , is possible.
(at M_GUT) NUHM2
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LUX, XENON1T, PandaX Heavy?? b u Neutralino LSP-Nucleon scattering s s
Non-holomorphic corrections (see later) Neutralino LSP-Nucleon scattering Dutta-YM-Santoso, PRD80(2009)095005 s LUX, XENON1T, PandaX Heavy?? s
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PandaX-II 2017, Aug.
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Brief review of Higgs Penguin FCNC in SUSY
It comes from finite correction due to SUSY br. b s (Choudhury-Gaur, Babu-Kolda, …)
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Double Higgs-Penguin for B meson mixings
(Hamzaoui-Pospelov-Toharia, Buras et.al., Bobeth et.al., …) s b h,H,A s b Right-handed squark FCNC source is important.
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Under SO(10) GUT boundary condition
Dutta-YM, PRD78(2008)071702 Before the measurement of Bs phase
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CKMfitter Unitarity Triangle
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Box contribution is dominant if there is only left-handed FCNC source.
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SM All the other data are satisfied at the green points.
Dutta-YM, PRD91(2015)095011 All the other data are satisfied at the green points.
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CMS/LHCb combined results (Nature 522 (2015) 68)
SM predictions :
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Popular FCNC source (folklore)
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from neutrino FCNC source
Dutta-YM, PRD75(2007)
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? b-d FCNC > b-s FCNC It is possible if they are induced by anti-symmetric coupling. Dutta-YM, PRD91(2015)095011
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In SU(5) GUT Anti-symmetric FCNC source Br depends on slepton masses.
arXiv:
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Note on in SM due to CKM unitarity Clean test Belle II Goal :
Belle, PRL 114(2015)151601 Belle II Goal : Model independent analysis by Hurth-Lunghi-Porod
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Quark-lepton unification?
1. 2. , CPV , LFV New FCNC/CP source Left- or right-handed? Quark-lepton unification?
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Exotics Baryon/lepton number violation
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Lepton number violating B meson decays
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Baryon number violating processes (Kuzmin, Glashow)
(Forbidden?) Wait for HyperKamiokande Proton decay Neutron-anti-neutron oscillations Baryon-antibaryon oscillations Double-proton decay Hydrogen-antihydrogen oscillations
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How about Heavy flavor baryons?
TeV scale diquark mediation (with a flavor suppression) gives an achievable order of magnitude. (Chacko-Mohapatra) SM singlet (Ajaib-Gogoladze-YM-Shafi) (Dutta-YM-Mohapatra) How about Heavy flavor baryons?
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LHCb, arXiv:
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Summary LHC results : All heavy? But, it can still affect to “accurate” flavor measurements. Precise measurements are the key to new FCNC sources, and heavier Higgs masses. The b-d transition can be larger than the b-s transition. Then, is larger than in unified models. Accurate (CPV) measurement is helpful to check the scenarios of new FCNC sources. Exotics : Lepton/baryon number violating processes
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Thank you very much!
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Five candidates of the anti-symmetric bi-fermion couplings
Neutron and electron EDMs can be as large as the current bounds. 38 38
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K meson mixing data are satisfied at the green points.
Phys. Rev. D91 (2015) SM K meson mixing data are satisfied at the green points.
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Feature 1 : For a naive hierarchy , we obtain
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If is small, one of is small.
Feature 2 : If is small, one of is small.
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Implication the couplings
induce FCNC in the right-handed sleptons (in addition to the left-handed ones from Dirac neutrino couplings) The electron electric dipole moment is generated even if Higgsino mass and scalar trilinear coupling are real. Experimental bound:
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Flavor Changing Neutral Current (FCNC) in SUSY GUTs
Too much FCNCs in general SUSY breaking masses. Flavor universality of SUSY breaking is assumed. Even if so, off-diagonal elements are induced by RGEs via heavy particle loops (right-handed neutrino, colored Higgs). (Borzumati-Majiero, Moroi, Chang-Majiero-Murayama, …) Investigating FCNCs in quarks and leptons is important to find a footprint of GUT scale physics.
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Neutron-antineutron oscillations
(Current bound) Cold neutron beam from reactor (Grenoble, France (1994)) (J. Phys. G36, , Mohapatra)
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Global fits by GAMBIT collaboration (Global And Modular Beyond-the-Standard-mode Inference Tool)
CMSSM
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NUHM1 NUHM2
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MSSM7:
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Best fits by GAMBIT collaboration,
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