Neutrino Mass Models and Their Experimental Signatures
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1 Neutrino Mass Models and Their Experimental Signatures K.S. Babu Oklahoma State University GIAN Course on Electrowak Symmetry Breaking, Flavor Physics and BSM IIT Guwahati, Guwahati, Assam, India December , 2017
2 Neutrino Flavor Oscillations
3 A global fit to neutrino oscillation data Estaban, Gonzalez-Garcia, Maltoni, Martinze-Soler, Schwetz (2017)
4 Neutrinos and the Fermion Mass Puzzle
5 Quark and Lepton Mixing Parameters
6 Pressing Questions for Neutrinos
7 Neutrino Mass Ordering
8 Neutrinoless Double Beta Decay Bilenky, Giunti, 2012
9 Seesaw Mechanism for Neutrino Masses Minkowski (1977) Gell-Mann, Ramond, Slansky (1979) Yanagida (1979) Mohapatra, Senjanovic (1979)
10 Variety of Seesaw Mechanisms
11 Variety of Seesaw Mechanisms (cont.) Mohapatra (1986) Mohapatra, Valle (1986) Dev, Mohapatra (2010); Khalil (2010); A. Das, Okada (2013); Dev, Pilaftsis (2013); Arganda, Herrero, Marcano, Weiland (2015); Soumya C, R. Mohanta (2017); A. Mukherjee, D. Borah, M.K. Das (2017); B. Karmakar, A. Sil (2017); Sinha, Samanta, Ghosal (2016); Humbert, Lindner, J. Smirnov (2016),.
12 Testing Type-I Seesaw Experimentally
13 Type-I Seesaw Tests Babu, T. Ghosh (2017)
14 Type-I Seesaw Tests (cont.)
15 Type-I Seesaw Tests (cont.) De Gouvea, Kobach (2016) Atre, Han, Pascoli (2009) See talks in WG III: B. Dev, A. Patra, K. Ghosh,
16 Global constraints on neutrino mixing De Gouvea, Kobach (2016) Atre, Han, Pascoli (2009)
17 Constraints with 2 nonzero mixings De Gouvea, Kobach (2016)
18 Testing Type-II Seesaw Babu, Jana (2017) Rizzo (1982); Huitu, Maalampi, Pietila, Raidal (1997); Gunion, Loomis, Pitts (1996); Akeryod, Aoki (2005); Han, Mukhopadhyaya, Ci, Wang (2005), N. Sahu, Uma Sankar (2005); Sarma, Devi, Singh (2007); Chao, Luo, Xing, Zhao (2007); Perez, Han, Huang, Li, Wang (2008); McDonald, Sahu, Sarkar (2008); Chiang, Nomura, Tsumura (2012); Dev, D. Ghosh, Okada, Saha (2013); Nayak, Parida (2015); Cai, Han, Ruiz (2017),
19 Production of doubly charged scalar Babu, Jana (2017)
20 Improved limits on doubly charged mass Babu, Jana (2017)
21 Minimal SO(10) Model Model has only 11 real parameters plus 7 phases Babu, Mohapatra (1993) Bajc, Melfo, Senjanovic, Vissani (2002) Fukuyama, Okada (2002) Bajc, Melfo, Senjanovic, Vissani (2004) Fukuyama, Ilakovac, Kikuchi, Meljanac, Okada (2004) Aulakh et al (2004) Bertolini, Frigerio, Malinsky (2004) Babu, Macesanu (2005) Bertolini, Malinsky, Schwetz (2006) Dutta, Mimura, Mohapatra (2007) Bajc, Dorsner, Nemevsek (2009) Joshipura, Patel (2011) Dueck, Rodejohann (2013)
22 Specific Example: Type I Seesaw
23 Minimal SO(10) Global Fit Joshipura, Patel (2011)
24 Large Neutrino Mixing From Lopsided Matrices Quark and Lepton Mass hierarchy: This motivates: K.S. Babu, S. Barr, 1995 Albright, Babu, Barr, 1998 Sato and Yanagida, 1998 Irges, Lavignac, Ramond, 1998 Altarelli, Feruglio, 1998
25
26 Neutrino Mass Anarchy De Gouvea, Murayama (2012)
27 Radiative mass generation
28 Effective Delta(L) = 2 operators for neutrino masses C.N. Leung, KSB (2003) Choi, Jeong, Song (2002) De Gouvea, Jenkins (2008) Angel, Volkas (2012) Review: Cai, Herrero-Garcia, Schmidt, Vicente, Volkas (2017)
29 Dimension 5 operator through loops E. Ma (2006)
30 Zee Model of Neutrino Mass A. Zee (1980)
31 Zee Model of Neutrino Mass (cont.)
32 L. Wolfenstein (1980) Smirnov, Tanimoto (1997) Jarlskog, Matsuda, Skaldhauge, Tanimoto (1999) Frampton, Glashow (1999)
33 Koide (2001) X.G. He (2004)
34 A Predictive Variant Babu, Julio (2013)
35
36 Gonzalez-Garcia et al (2012) Fogli et al (2012)
37
38 A. Zee, (1985) Babu (1988)
39
40
41
42
43
44 K.S. Babu, C. Macesanu (2005) D. Sierra, M. Hirsch (2006) M. Nebot, J. Oliver, D. Paolo, A. Santamaria (2008)
45
46 K.S. Babu, J. Julio (2013) D. Schmitz, T.Schwetz, H. Zhang (2014) J. Herrero-Garcia, M. Nebot, N. Rius, A. Santamaria (2014) K.S. Babu, C. Macesanu (2005) D. Sierra, M. Hirsch (2006) M. Nebot, J. Oliver, D. Paolo, A. Santamaria (2008)
47 LFV in Radiative Neutrino Mass Model K.S. Babu, J. Julio (2013)
48 LFV in Radiative Neutrino Mass Model (cont.)
49 Zeros in fermion mass matrices Weinberg (1977) Wilczek, Zee (1977) Fritzsch (1977)
50 Texture zeros for neutrinos Frampton, Glashow, Marfatia (2002) Xing (2002) Merle, Rodejohann (2006) Goswami et. al (2006)
51 Predictions for Model A1 Z. Devi, S. Goswami (2014) J. Liao, D. Marfatia, K. Whisnant (2014), (2015 )
52 Non-standard Neutrino Interactions L. Wolfenstein (1978)
53 Global Constraints on NSI Gonzalez-Garcia, Maltoni (2014)
54 NSI and solar neutrino oscillations Friedland, Shoemaker (2012)
55 Neutrino NSI from light mediators Friedland, Machado, Mocioiu, KSB (2017)
56 Consistency checks of light mediator
57 Summary and Conclusions
58 Perspective
59 Thank You!
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