We discuss the soft-collinear effective theory (SCET) and kinematic expansions in B-decays, focusing on recent results for color suppressed B -> D^(*) X decays. In particular we discuss model independent predictions for B^0 -> D^0 pi^0 and B^0 -> D^*0 pi^0, and update the comparison using new experimental data. We show why HQET alone is insufficient to give these results. SCET predictions are also reviewed for other B and Lambda_b decay channels that are not yet tested by data.
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机译：我们讨论了软共线有效理论（SCET）和B衰减的运动扩展，重点是颜色抑制的B-> D ^（*）X衰减的最新结果。特别是，我们讨论了B ^ 0-> D ^ 0 pi ^ 0和B ^ 0-> D ^ * 0 pi ^ 0的模型独立预测，并使用新的实验数据更新了比较结果。我们证明了为什么仅凭HQET不足以给出这些结果。还对尚未通过数据测试的其他B和Lambda_b衰减通道进行了SCET预测。
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