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- M. B. GAVELA
- CERN, TH Division, CH-1211, Geneva 23, Switzerland
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- P. HERNÁNDEZ
- Lyman laboratory, Harvard University, Cambridge, MA 02138, USA
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- J. ORLOFF
- Institut für Theoretische Physik, Universität Heidelberg, Germany
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- O. PÈNE
- LP THE, F-91405 Orsay, France
書誌事項
- 公開日
- 1994-03-21
- DOI
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- 10.1142/s0217732394000629
- 公開者
- World Scientific Pub Co Pte Lt
この論文をさがす
説明
<jats:p> In CP arguments, we argue against a Standard Model explanation of the baryon asymmetry of the universe in the presence of a first order phase transition. A CP-asymmetry is found in the reflection coefficients of quarks hitting the phase boundary created during the electroweak transition. The problem is analyzed both in an academic zero temperature case and in the realistic finite temperature one. The building blocks are similar in both cases: Kobayashi-Maskawa CP-violation, CP-even phases in the reflection coefficients of quarks, and physical transitions due to fermion self-energies. In both cases an effect is present at order [Formula: see text] in rate. A regular GIM behavior is found as intuitively expected. In the finite temperature case, a crucial role is played by the damping rate of quasiparticles in a hot plasma, which is a relevant scale together with M<jats:sub>W</jats:sub> and the temperature. The effect is many orders of magnitude below what observation requires, and indicates that non-standard physics is indeed needed in the cosmological scenario. </jats:p>
収録刊行物
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- Modern Physics Letters A
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Modern Physics Letters A 09 (09), 795-809, 1994-03-21
World Scientific Pub Co Pte Lt
