Solving the discrepancy among the light elements abundances and WMAP

Kazuhide Ichikawa, Masahiro Kawasaki, Fuminobu Takahashi

研究成果: Article査読

26 被引用数 (Scopus)

抄録

Within the standard Big Bang nucleosynthesis (BBN) and cosmic microwave background (CMB) framework, the baryon density measured by the Wilkinson Microwave Anisotropy Probe (WMAP) or the primordial D abundance is much higher than the one measured by the 4He or 7Li abundances. To solve the discrepancy, we propose a scenario in which additional baryons appear after BBN. We show that simply adding the baryons cannot be a solution but the existence of a large lepton asymmetry before BBN makes the scenario successful. These extra baryons and leptons, in addition to the initial baryons which exist before the BBN, can be all produced from Q-balls.

本文言語English
ページ(範囲)1-10
ページ数10
ジャーナルPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
597
1
DOI
出版ステータスPublished - 2004 9月 2
外部発表はい

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学

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