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Prog. Theor. Phys. 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^*,****)

Department of Physics, Saga University, Saga 840-8502, Japan
^*Kyushu School of Engineering, Kinki University, Iizuka 820-8255, Japan

(Received February 9, 1998)

Abstract:

By studying the effective potential of the MSSM at finite temperature, we find that CP can be spontaneously broken in the intermediate region between the symmetric and broken phases separated by the bubble wall created at the phase transition. This type of CP violation is necessary to have a bubble wall profile connecting CP conserving vacua, while violating CP halfway and generating sufficient baryon number without contradiction of the experimental bounds on CP violation. Several conditions on the parameters in the MSSM necessary for CP to be broken in this manner are found.

URL : http://ptp.ipap.jp/link?PTP/99/1045/
DOI : 10.1143/PTP.99.1045

^*)E-mail: funakubo@cc.saga-u.ac.jp
^**)E-mail: kakuto@fuk.kindai.ac.jp
^***)E-mail: otks1scp@mbox.nc.kyushu-u.ac.jp
^****)E-mail: ftoyoda@fuk.kindai.ac.jp

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Citing Article(s) :

1. Progress of Theoretical Physics Vol. 101 No. 2 (1999) pp. 415-438 :

   Higgs Mass, CP Violation and Phase Transition in the MSSM

   Koichi Funakubo

2. Progress of Theoretical Physics Vol. 102 No. 2 (1999) pp. 389-406 :

   Transitional CP Violation in the MSSM and Electroweak Baryogenesis

   Koichi Funakubo, Shoichiro Otsuki and Fumihiko Toyoda

3. Progress of Theoretical Physics Vol. 109 No. 3 (2003) pp. 415-432 :

   CP Violation in the Higgs Sector and a Phase Transition in the MSSM

   Koichi Funakubo, Shuichiro Tao and Fumihiko Toyoda

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