Affleck-Dine (pseudo)-Dirac neutrinogenesis | Zendy

Steven Abel | Zendy; Véronique Pagé | Zendy

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Affleck-Dine (pseudo)-Dirac neutrinogenesis

Author(s) -

Steven Abel,

Véronique Pagé

Publication year - 2006

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2006/05/024

Subject(s) - sphaleron , baryon asymmetry , leptogenesis , physics , particle physics , asymmetry , neutrino , dirac (video compression format) , lepton , baryogenesis , nuclear physics , electron

We consider the Affleck-Dine mechanism for leptogenesis in the minimal MSSMwith Dirac or Pseudo-Dirac neutrinos. The rolling of scalars along D-flatdirections generates a left-right asymmetry in the sneutrino sector, only theleft part of which is transferred to a baryon asymmetry via sphalerontransitions. In the pure Dirac case the baryon asymmetry of the Universe isthus mirrored by an equal and opposite asymmetry in the leptons. The mechanismis also found to work when the neutrinos are pseudo-Dirac. No additional fieldneeds to be added to the MSSM other than the right-handed neutrino.Comment: Latex, 3 figures, 1 bib file, 2 added reference, 1 minor correction, 1 added commen

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