Fields, Particles, and Nuclei

JETP Letters

, Volume 96, Issue 5, pp 290-297

Charmed penguin versus BAU

  • A. D. DolgovAffiliated withAlikhanov Institute of Theoretical and Experimental PhysicsNovosibirsk State UniversityDipartimento di Fisica, Università degli Studi di FerraraIstituto Nazionale di Fisica Nucleare, Sezione di Ferrara
  • , S. I. GodunovAffiliated withAlikhanov Institute of Theoretical and Experimental PhysicsNovosibirsk State UniversityAll-Russian Scientific Research Institute of Automatics
  • , A. N. RozanovAffiliated withCPPM IN2P3-CNRS- Université de Mediterrance
  • , M. I. VysotskyAffiliated withAlikhanov Institute of Theoretical and Experimental PhysicsNovosibirsk State UniversityAll-Russian Scientific Research Institute of Automatics

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Abstract

Since the Standard Model most probably cannot explain the large value of CP asymmetries recently observed in D-meson decays we propose the fourth quark-lepton generation explanation of it. As a byproduct weakly mixed leptons of the fourth generation make it possible to save the baryon number of the Universe from erasure by sphalerons. An impact of the 4th generation on BBN is briefly discussed.