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Prog. Theor. Phys. Vol. 98 No. 5 (1997) pp. 1179-1191

[ Full Text PDF : FREE ACCESS (604K) ]

Electroweak Baryogenesis from Chargino Transport in the Supersymmetric Model

Mayumi Aoki, Noriyuki Oshimo*) and Akio Sugamoto

Department of Physics, Ochanomizu University, Tokyo 112

(Received July 22, 1997)

Abstract:

We study the baryon asymmetry of the universe in the supersymmetric standard model (SSM). At the electroweak phase transition, the fermionic partners of the charged SU(2) gauge bosons and Higgs bosons are reflected from or transmitted to the bubble wall of the broken phase. Owing to a physical complex phase in their mass matrix, these reflections and transmissions have asymmetries between CP-conjugate processes. Equilibrium conditions in the symmetric phase are then shifted to favor a non-vanishing value for the baryon number density, which is realized through an electroweak anomaly. We show that the resultant ratio of the baryon number to the entropy is consistent with its present observed value within reasonable ranges of SSM parameters, provided that the CP-violating phase intrinsic in the SSM is not suppressed too greatly. Compatibility with the constraints on the parameters from the electric dipole moment of the neutron is also discussed.


URL : http://ptp.ipap.jp/link?PTP/98/1179/
DOI : 10.1143/PTP.98.1179


*)Present address: Institute for Cosmic Ray Research, University of Tokyo, Tokyo 188.

[ Full Text PDF : FREE ACCESS (604K) ] Citation:

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Citing Article(s) :

  1. Progress of Theoretical Physics Vol. 98 No. 6 (1997) pp. 1325-1332 :
    Implications of Baryon Asymmetry for the Electric Dipole Moment of the Neutron
    Mayumi Aoki, Akio Sugamoto and Noriyuki Oshimo
  2. Progress of Theoretical Physics Vol. 99 No. 6 (1998) pp. 1045-1068 :
    Spontaneous CP Violation at Finite Temperature in the MSSM
    Koichi Funakubo, Akira Kakuto, Shoichiro Otsuki and Fumihiko Toyoda
  3. Progress of Theoretical Physics Vol. 101 No. 2 (1999) pp. 415-438 :
    Higgs Mass, CP Violation and Phase Transition in the MSSM
    Koichi Funakubo
  4. Progress of Theoretical Physics Vol. 114 No. 2 (2005) pp. 369-389 :
    Phase Transitions in the NMSSM
    Koichi Funakubo, Shuichiro Tao and Fumihiko Toyoda

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