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Prog. Theor. Phys. Vol. 96 No. 4 (1996) pp. 771-779

Explicit CP Breaking and Electroweak Baryogenesis

Koichi Funakubo, Akira Kakuto,^* Shoichiro Otsuki^* and Fumihiko Toyoda^*

Department of Physics, Saga University, Saga 840
^*Department of Liberal Arts, Kinki University in Kyushu, Iizuka 820

(Received June 10, 1996)

Abstract:

We investigate spatial behaviors of the CP-violating angle θ by solving the equation of motion of the two-Higgs-doublet model in the presence of a small explicit CP breaking δ. The moduli of the two Higgs scalars are fixed to be the kink shape with a common width. In addition to solutions θ∼O(δ) in all the region, we find several sets of two solutions of opposite signs, whose magnitudes become as large as O(1) around the surface of the bubble wall while the CP vilation in the broken phase limit is of O(δ). Such set of solutions not only yield sufficient amount of the chiral charge flux, but also avoid the cancellation in the net baryon number because of a large discrepancy in their energy densities driven nonperturbatively by the small δ.

URL : http://ptp.ipap.jp/link?PTP/96/771/
DOI : 10.1143/PTP.96.771

[ Full Text PDF : FREE ACCESS (420K) ] Citation: Plain Text BiBTeX EndNote(RIS) RSS

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References:

1. For a review see, A. Cohen, D. Kaplan and A. Nelson, Ann. Rev. Nucl. Part. Sci. 43 (1993), 27.
2. K. Funakubo, A. Kakuto, S. Otsuki, K. Takenaga and F. Toyoda, Prog. Theor. Phys. 94 (1995), 845[PTP].
3. D. Comelli, M. Pietroni and A. Riotto, Nucl. Phys. B412 (1994), 441.
4. J. M. Cline, K. Kainulainen and A. P. Vischer, hep-ph/9506284 (1995)[e-print arXiv].
5. K. Funakubo, A. Kakuto, S. Otsuki and F. Toyoda, in preparation.
6. K. Funakubo, A. Kakuto, S. Otsuki and F. Toyoda, Prog. Theor. Phys. 95 (1996), 929[PTP].

Citing Article(s) :

1. Progress of Theoretical Physics Vol. 98 No. 2 (1997) pp. 427-442 :

   CP-Violating Bubble Wall and Electroweak Baryogenesis

   Koichi Funakubo, Akira Kakuto, Shoichiro Otsuki and Fumihiko Toyoda

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. 102 No. 2 (1999) pp. 389-406 :

   Transitional CP Violation in the MSSM and Electroweak Baryogenesis

   Koichi Funakubo, Shoichiro Otsuki and Fumihiko Toyoda

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