[15] M. C. Gonzalez-Garcia and J. W. F. Valle, Nucl. Phys. B 355, 330 (1991). [16] J. W. F. Valle, Phys. Lett. B 196, 157 (1987). [17] P. Fileviez Perez and S. Spinner, Phys. Lett. B 673, 251 (2009) [arXiv:0811.3424 [hep-ph]]; V. Barger, P. Fileviez Perez and S. Spinner, Phys. Rev. Lett. 102, 181802 (2009) [arXiv:0812.3661 [hep-ph]]; P. Fileviez Perez and S. Spinner, Phys. Rev. D 80, 015004 (2009) [arXiv:0904.2213 [hep-ph]]; L. L. Everett, P. Fileviez Perez and S. Spinner, Phys. Rev. D 80, 055007 (2009) [arXiv:0906.4095 [hep-ph]]; P. Fileviez Perez and S. Spinner, arXiv:0909.1841 [hep-ph]. [18] Y. Chikashige, R. N. Mohapatra and R. D. Peccei, Phys. Rev. Lett. 45, 1926 (1980); Y. Chikashige, R. N. Mohapatra and R. D. Peccei, Phys. Lett. B 98, 265 (1981); G. B. Gelmini and M. Roncadelli, Phys. Lett. B 99, 411 (1981). [19] R. Barbieri, D. E. Brahm, L. J. Hall and S. D. H. Hsu, Phys. Lett. B 238, 86 (1990); F. Takayama and M. Yamaguchi, Phys. Lett. B 476, 116 (2000) [arXiv:hepph/9910320];S.Y.Choi, D.J..MillerandP.M.Zerwas, Nucl.Phys.B711,83(2005) [arXiv:hep-ph/0407209]; S. Y. Choi, H. E. Haber, J. Kalinowski and P. M. Zerwas, Nucl. Phys. B 778, 85 (2007) [arXiv:hep-ph/0612218]; M. Hirsch, A. Vicente and W. Porod, Phys. Rev. D 77, 075005 (2008) [arXiv:0802.2896 [hep-ph]]. [20] B.Mukhopadhyaya, S. RoyandF.Vissani, Phys. Lett. B443, 191(1998)[arXiv:hepph/9808265]. [21] E. J. Chun, D. W. Jung and J. D. Park, Phys. Lett. B 557, 233 (2003) [arXiv:hepph/0211310]. [22] S. Davidson and S. F. King, Phys. Lett. B 445, 191 (1998) [arXiv:hep-ph/9808296]. [23] J. A. Casas and A. Ibarra, Nucl. Phys. B 618, 171 (2001) [arXiv:hep-ph/0103065]. [24] E. A. Baltz and P. Gondolo, Phys. Rev. D 57, 2969 (1998) [arXiv:hep-ph/9709445]; M. Chemtob, Prog. Part. Nucl. Phys. 54, 71 (2005) [arXiv:hep-ph/0406029]; J. P. Hall and S. F. King, JHEP 0908, 088 (2009) [arXiv:0905.2696 [hep-ph]]. [25] For a review see e.g., R. Barbier et al., Phys. Rept. 420, 1 (2005) [arXiv:hepph/0406039]; M. Chemtob, Prog. Part. Nucl. Phys. 54, 71 (2005) [arXiv:hepph/0406029]; S. P. Martin, Phys. Rev. D 46, 2769 (1992) [arXiv:hep-ph/9207218]. [26] H. Baer, C. h. Chen, F. Paige and X. Tata, Phys. Rev. D 50, 4508 (1994) [arXiv:hepph/9404212]; A. Bartl, W. Porod, D. Restrepo, J. Romao and J. W. F. Valle, Nucl. Phys. B 600, 39 (2001) [arXiv:hep-ph/0007157]. 114
[27] A. Bartl, M. Hirsch, T. Kernreiter, W. Porod and J. W. F. Valle, JHEP 0311, 005 (2003) [arXiv:hep-ph/0306071]. [28] A. Abada, C. Biggio, F. Bonnet, M. B. Gavela and T. Hambye, Phys. Rev. D 78, 033007 (2008) [arXiv:0803.0481 [hep-ph]]. [29] F. Borzumati and A. Masiero, Phys. Rev. Lett. 57, 961 (1986); A. Masiero, S. K. Vempati and O. Vives, Nucl. Phys. B 649, 189 (2003) [arXiv:hep-ph/0209303]. [30] B. de Carlos and P. L. White, Phys. Rev. D 54, 3427 (1996) [arXiv:hep-ph/9602381]. [31] B. C. Allanach, A. Dedes and H. K. Dreiner, Phys. Rev. D 60, 056002 (1999) [arXiv:hep-ph/9902251]; D. F. Carvalho, M. E. Gomez and J. C. Romao, Phys. Rev. D 65, 093013 (2002) [arXiv:hep-ph/0202054]; B. C. Allanach, A. Dedes and H. K. Dreiner, Phys. Rev. D 69, 115002 (2004) [Erratum-ibid. D 72, 079902 (2005)] [arXiv:hep-ph/0309196]; S. Rimmer, arXiv:hep-ph/0610406. 115
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Neutrinos and Some Aspects of Physi
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Declaration This thesis is a presen
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Acknowledgments First and foremost,
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iii
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trino masses are bounded within 0.1
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softly broken Z 2 symmetry, the mas
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tribimaximal mixing in the neutrino
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Bibliography [1] Two Higgs doublet
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Contents 1 Introduction 1 1.1 Stand
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6.2.2 Charged Lepton Masses and Mix
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Chapter 1 Introduction 1.1 Standard
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For positive µ 2 and λ, the Higgs
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type of Yukawa interaction between
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interaction with the Higgs as λ f
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where ˆΦ is the MSSM chiral super
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(2004); A. Ghosal, hep-ph/0304090;
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active flavor. In recent years, sev
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Figure 2.1: The possible neutrino s
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Majorana mass term breaks lepton nu
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The kinetic term of the Higgs tripl
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ight handed neutrino N R can be exa
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alternating group which is not a di
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The group contains two one-dimensio
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from neutral-current interactions i
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[31] K. S. Babu and R. N. Mohapatra
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of producing the heavy fermion trip
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where Σ ± Ri = Σ1 Ri ∓iΣ2 Ri
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while U ν diagonalizes m ν and ˜
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It is evident that the masses of th
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0.001 0.001 0.0001 0.0001 U e3 1e-0
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if we neglect terms proportional to
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calculations for lepton flavor viol
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fb. Therefore, it is obvious that t
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Σ − -> e m 1 m h 0 Σ − -> e m
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We can also see that for Σ − m 1
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the sinα term. However, decay to h
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Σ − m 1 ->ν m1 W Σ 0 m 1 ->ν
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Γ 2HDM (Σ 0 m → ν m H 0 ) ≃
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Decay modes Σ ± m 1 Σ ± m 2 Σ
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- Page 108 and 109: C H0 ,L 1√ ll 2 (T 11Y † l S 11
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- Page 112 and 113: Bibliography [1] S. Weinberg, Phys.
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VEV alignments. Another way the VEV
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(2006); M. Maltoni, T. Schwetz, M.
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168
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metric standard model in chapter 1.
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mally two. However the R-parity vio
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sector contains the exact/approxima