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Dirac leptogenesis and anomalous U(1)

  • theoretical physics
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Abstract.

We consider Dirac leptogenesis in supersymmetric theories where the supersymmetry breaking is transmitted to the observable sector by an anomalous U(1) symmetry. This kind of supersymmetry breaking is known to provide a solution to the μ problem and avoid large CP-violation effects. The asymmetries generated by the decays of heavy leptons do not suffer from wash-out due to the equilibration of left- and right-handed neutrinos thanks to the extreme smallness of the neutrino masses. The model ties up the smallness of the neutrino masses and the out-of-equilibrium nature of the heavy lepton decays with no tension with the overproduction of gravitinos.

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Authors and Affiliations

  1. Physics Department, Hacettepe University, 06532, Beytepe, Ankara, Turkey

    M. Boz

  2. Physics Department, Middle East Technical University, 06530, Ankara, Turkey

    N. K. Pak

Authors
  1. M. Boz
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  2. N. K. Pak
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Correspondence to M. Boz.

Additional information

Received: 23 October 2003, Revised: 31 August 2004, Published online: 20 October 2004

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Boz, M., Pak, N.K. Dirac leptogenesis and anomalous U(1). Eur. Phys. J. C 37, 507–510 (2004). https://doi.org/10.1140/epjc/s2004-02022-1

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  • DOI: https://doi.org/10.1140/epjc/s2004-02022-1

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