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The European Physical Journal C

, Volume 69, Issue 1–2, pp 45–52 | Cite as

A two-Higgs doublet model with remarkable CP properties

  • P. M. FerreiraEmail author
  • João P. Silva
Regular Article - Theoretical Physics

Abstract

We analyze generalized CP symmetries of two-Higgs doublet models, extending them from the scalar to the fermion sector of the theory. We show that, other than the usual CP transformation, there is only one of those symmetries which does not imply massless charged fermions. That single model which accommodates a fermionic mass spectrum compatible with experimental data possesses a remarkable feature. Through a soft breaking of the symmetry it displays a new type of spontaneous CP violation, which does not occur in the scalar sector responsible for the symmetry breaking mechanism but, rather, in the fermion sector.

Keywords

Yukawa Coupling Scalar Potential Scalar Sector Fermion Sector Yukawa Matrice 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    T.D. Lee, Phys. Rev. D 8, 1226 (1973) CrossRefADSGoogle Scholar
  2. 2.
    T.D. Lee, G.C. Wick, Phys. Rev. 148, 1385 (1966) CrossRefMathSciNetADSGoogle Scholar
  3. 3.
    J. Bernabéu, G.C. Branco, M. Gronau, Phys. Lett. B 169, 243 (1986) CrossRefADSGoogle Scholar
  4. 4.
    G. Ecker, W. Grimus, W. Konetschny, Nucl. Phys. B 191, 465 (1981) CrossRefADSGoogle Scholar
  5. 5.
    G. Ecker, W. Grimus, H. Neufeld, Nucl. Phys. B 247, 70 (1984) CrossRefADSGoogle Scholar
  6. 6.
    H. Neufeld, W. Grimus, G. Ecker, Int. J. Mod. Phys. A 3, 603 (1988) CrossRefADSGoogle Scholar
  7. 7.
    I.P. Ivanov, Phys. Rev. D 77, 015017 (2008). arXiv:0710.3490 [hep-ph] CrossRefADSGoogle Scholar
  8. 8.
    P.M. Ferreira, H.E. Haber, J.P. Silva, Phys. Rev. D 79, 116004 (2009). arXiv:0902.1537 [hep-ph] CrossRefADSGoogle Scholar
  9. 9.
    We thank the referee for suggesting that we make this statement sharper Google Scholar
  10. 10.
    G. Ecker, W. Grimus, H. Neufeld, J. Phys. A 20, L807 (1987) CrossRefADSGoogle Scholar
  11. 11.
    L. Lavoura, Int. J. Mod. Phys. A 9, 1994 (1873) Google Scholar
  12. 12.
    F.J. Botella, J.P. Silva, Phys. Rev. D 51, 3870 (1995). arXiv:hep-ph/9411288 CrossRefADSGoogle Scholar
  13. 13.
    G.C. Branco, L. Lavoura, J.P. Silva, CP Violation (Oxford University Press, Oxford, 1999) Google Scholar
  14. 14.
    S.L. Glashow, S. Weinberg, Phys. Rev. D 15, 1977 (1958) Google Scholar
  15. 15.
    E.A. Paschos, Phys. Rev. D 15, 1977 (1966) Google Scholar
  16. 16.
    R.D. Peccei, H.R. Quinn, Phys. Rev. Lett. 38, 1440 (1977) CrossRefADSGoogle Scholar
  17. 17.
    L. Lavoura, Int. J. Mod. Phys. A 9, 1994 (1873) Google Scholar
  18. 18.
    G.C. Branco, W. Grimus, L. Lavoura, Phys. Lett. B 380, 119 (1996). arXiv:hep-ph/9601383 CrossRefADSGoogle Scholar
  19. 19.
    P.M. Ferreira, J.P. Silva, in preparation Google Scholar
  20. 20.
    M. Maniatis, A. von Manteuffel, O. Nachtmann, Eur. Phys. J. C 57, 739 (2008). arXiv:0711.3760 [hep-ph] CrossRefADSGoogle Scholar
  21. 21.
    M. Maniatis, O. Nachtmann, J. High Energy Phys. 0905, 028 (2009). arXiv:0901.4341 [hep-ph] CrossRefADSGoogle Scholar
  22. 22.
    C. Amsler et al. (Particle Date Group), Phys. Lett. B 667, 1 (2008) CrossRefADSGoogle Scholar
  23. 23.
    G.C. Branco, L. Lavoura, Phys. Lett. B 208, 123 (1988) CrossRefADSGoogle Scholar
  24. 24.
    L. Lavoura, Phys. Rev. D 40, 2440 (1989) CrossRefADSGoogle Scholar
  25. 25.
    L. Lavoura, Phys. Lett. B 223, 97 (1989) CrossRefADSGoogle Scholar
  26. 26.
    J.F. Gunion, H.E. Haber, Phys. Rev. D 72, 095002 (2005). arXiv:hep-ph/0506227 CrossRefADSGoogle Scholar
  27. 27.
    L. Lavoura, J.P. Silva, Phys. Rev. D 50, 4619 (1994). arXiv:hep-ph/9404276 CrossRefADSGoogle Scholar

Copyright information

© Springer-Verlag / Società Italiana di Fisica 2010

Authors and Affiliations

  1. 1.Instituto Superior de Engenharia de LisboaRua Conselheiro Emídio NavarroLisboaPortugal
  2. 2.Centro de Física Teórica e ComputacionalUniversidade de LisboaLisboaPortugal
  3. 3.Centro de Física Teórica de PartículasInstituto Superior TécnicoLisboaPortugal

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