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<p>The <i>B</i>-Mesogenesis model explains the matter-antimatter asymmetry and leads to the right amount of dark matter in the Universe. In particular, this model predicts new decay channels of the <i>b</i> quark. We investigate the modification of inclusive <i>b</i>-hadron decay rates and of the lifetimes of different <i>B</i> mesons due to these new decay channels and compare our results with available predictions for exclusive <i>B</i> meson decays. We find that for the specific decay channel <i>b</i> → <i>duψ</i>, only a small region of parameter space remains viable after applying current experimental constraints. This surviving region is highly constrained but not yet fully excluded. We further investigate the individual sensitivities and complementarity of the different constraints from inclusive branching ratios and lifetimes.</p>

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Constraining B-mesogenesis models with inclusive and exclusive decays

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年8月19日

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  • Alexander Lenz,
  • Ali Mohamed,
  • Zachary Wüthrich

摘要

The B-Mesogenesis model explains the matter-antimatter asymmetry and leads to the right amount of dark matter in the Universe. In particular, this model predicts new decay channels of the b quark. We investigate the modification of inclusive b-hadron decay rates and of the lifetimes of different B mesons due to these new decay channels and compare our results with available predictions for exclusive B meson decays. We find that for the specific decay channel b → duψ, only a small region of parameter space remains viable after applying current experimental constraints. This surviving region is highly constrained but not yet fully excluded. We further investigate the individual sensitivities and complementarity of the different constraints from inclusive branching ratios and lifetimes.