1/21 Hiroaki SUGIYAMA (Maskawa Inst., Kyoto Sangyo Univ.) Contents Introduction Neutrino Mass with One Yukawa Int. Neutrino Mass with Three Yukawa Ints. Neutrino Mass with Five Yukawa Ints. Summary
2/21 Neutrino Mass Scale neutrino top electron tau pictures : is regarded as “Ant” and “whale” have the same “father” !? SM for “unnatural” (c.f. ) Neutrino mass might be generated in a different way
3/21 Familiar way (dim.-5 opperator) Scale suppression (e.g. Seesaw) An oasis Loop mechanism e.g. Suppression via not the loop factor but a product of (Yukawa) couplings. What kinds of products?
4/21 Simplifications in this Talk New Fermions : Only for Dirac neutrinos (no ) Yukawa Int. with only leptons New Scalars : (Colorless, integer electric charge) Negligible mixings Symmetry : SM gauge sym. No unbroken (All neutral scalars have VEV.) (No dark matter candidates.)
5/21 New Scalars and Yukawa Interactions Yukawa Note Symmetric Anti-sym. Arbitrary Symmetric
6/21 Mass and Combinations of Yukawa Ints. (I) (II) (III) (IV) (V) (VI) (VII)
7/21 Mass and Combinations of Yukawa Ints. (I) (II) Neutrino oscillation data (III) (IV) Neutrino mass matrix Constraints on new Yukawa matrix (V) (VI) Prediction about leptonic decays of new scalars Probe the origin of neutrino mass at colliders (VII)
8/21 Hiroaki SUGIYAMA (Maskawa Inst., Kyoto Sangyo Univ.) Contents Introduction Neutrino Mass with One Yukawa Int. Neutrino Mass with Three Yukawa Ints. Neutrino Mass with Five Yukawa Ints. Summary
9/21 W. Konetschny and W. Kumer, PLB 70 , 433 (1977) (I) Higgs Triplet Model M. Magg and C. Wetterich, PLB 94 , 61 (1980) T.P. Cheng and L.F. Li, PRD 22 , 2860 (1980) J. Schechter and J.W.F. Valle, PRD 22 , 2227 (1980) Constrained by osc. exps. Very predictive A.G. Akeroyd, M. Aoki, HS, PRD 77 ,075010 See also J. Garayoa, T. Schwetz, JHEP 0803 ,009 M. Kadastki, M. Raidal, L. Rebane, PRD 77 , 115023
10/21 Normal ( ) Inverted ( ) P. Fileviez Perez et al ., PRD 78 , 015018 (2008)
11/21 (II) Neutrinophilic Higgs Doublet Model S.M. Davidson and H.E. Logan, PRD 80 , 095008 (2009) F. Wang, W. Wang, and J.M. Yang, Europhys. Lett. 76 , 388 (2006) Constrained by osc. exps. Very predictive Normal ( ) Inverted ( ) S.M. Davidson and H.E. Logan, PRD 80 , 095008 (2009)
12/21 Hiroaki SUGIYAMA (Maskawa Inst., Kyoto Sangyo Univ.) Contents Introduction Neutrino Mass with One Yukawa Int. Neutrino Mass with Three Yukawa Ints. Neutrino Mass with Five Yukawa Ints. Summary
13/21 (III) Zee Model A. Zee, PLB 93 , 389 (1980) Original No FCNC No FCNC L. Wolfenstein, NPB 175 , 93 (1980) Excluded by oscillation data e.g., X.G. He, EPJC 34 , 371 (2004)
14/21 Original Accept FCNC in lepton sector at tree level Not a serious problem (Similar to mediation in HTM) Naively neglect X.G. He, EPJC 34 , 371 (2004) X.G. He and S.K. Majee, JHEP 1203 , 023 (2012) cf. Daya Bay : NuFact 2013 Not necessarily
15/21 (IV) 1-loop Dirac Neutrino Mass S. Nasri and S. Moussa, MPLA 17 , 771 (2002) S. Kanemura, T. Nabeshima, HS, PLB 703 , 66 (2011) or (consistent with (I), (II), (III) )
16/21 (V) 2-loop Majorana Neutrino Mass (New?) Example of decomposition is dominated by “Electronphilic”
17/21 (V) 2-loop Dirac Neutrino Mass (New?) Example of decomposition (Note: We need soft-term) Naively, is dominated by “Electronphilic”
18/21 Hiroaki SUGIYAMA (Maskawa Inst., Kyoto Sangyo Univ.) Contents Introduction Neutrino Mass with One Yukawa Int. Neutrino Mass with Three Yukawa Ints. Neutrino Mass with Five Yukawa Ints. Summary
19/21 A. Zee, NP B264 , 99 (1986) (VII) Zee-Babu Model K.S. Babu, PLB 203 , 132 (1988) or The same as (IV) (consistent with (I), (II), (III) ) K.S. Babu and C. Macesanu, PRD 67 , 073010 (2003) D. Aristizabal Sierra and M. Hirsch, JHEP 0612 , 052 (2006)
20/21 Naively neglect Naively, K.S. Babu and C. Macesanu, PRD 67 , 073010 (2003) D. Aristizabal Sierra and M. Hirsch, JHEP 0612 , 052 (2006)
21/21 Summary and/or Information on origin of Original Zee Model with or Majorana Dirac Almost common for ? Majorana (naively) Dirac (naively) Zee-Babu Model with
22/21 Backup
23/21 One Yukawa Interaction Neutrinophilic Higgs Doublet Higgs Triplet
24/21 Three Yukawa Interactions Zee New (?) New (?) 1-loop Dirac Neutrino Mass Zee (Transpose)
25/21 Five Yukawa Interactions Zee-Babu
26/21 Seven or More Yukawa Interactions
27/21 Measurements of Daya Bay : Chin. Phys. C 37 , 011001 (2013) NuFact 2013 Double CHOOZ : PRD 86 , 052008 (2012) NuFact 2013 RENO : PRL 108 , 191802 (2012) Neutrino Telescopes 2013 T2K (for ) : PRD 88 , 032002 (2013) KEK seminar, 19 Jul. 2013
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