Rare decays as tests of the Standard Model

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• 作者：Thomas Blake^a ; Gaia Lanfranchi^b ; David M. Straub^c ; ^{david.straub@tum.de}
• 关键词：Flavour physics ; B physics ; Rare decays ; Standard Model ; New physics
• 刊名：Progress in Particle and Nuclear Physics
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：92
• 期：Complete
• 页码：50-91
• 全文大小：2042 K
• 卷排序：92

文摘

One of the most interesting puzzles in particle physics today is that new physics is expected at the TeV energy scale to solve the hierarchy problem, and stabilises the Higgs mass, but so far no unambiguous signal of new physics has been found. Strong constraints on the energy scale of new physics can be derived from precision tests of the electroweak theory and from flavour-changing or CPCP-violating processes in strange, charm and beauty hadron decays. Decays that proceed via flavour-changing-neutral-current processes are forbidden at the lowest perturbative order in the Standard Model and are, therefore, rare  . Rare bb hadron decays are playing a central role in the understanding of the underlying patterns of Standard Model physics and in setting up new directions in model building for new physics contributions. In this article the status and prospects of this field are reviewed.