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arXiv 2004.08407hep-phhep-ex
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7%规则:希格斯玻色子新衰变的最大熵预测

The 7% Rule: A Maximum Entropy Prediction on New Decays of the Higgs Boson

Alexandre Alves, Alex Gomes Dias, Roberto da Silva

摘要:

标准模型中的希格斯玻色子衰变概率分布的熵在希格斯质量值与当前实验测量值相差小于一个标准偏差时最大化。对希格斯粒子质量的成功估计,促使我们提出检验最大熵原理(MEP)的方法,作为在希格斯粒子物理学的其他实例中进行理论推论的工具。在这封信中,我们表明,不考虑SM的扩展预测一个新的希格斯玻色子衰变通道,其分支比可以推断为7%左右,在这样一种方式,新的衰变熵仍然表现出最大的实验希格斯质量。为了说明MEP的预言,我们将MEP的推论应用于Higgs门模型、Higgs-轴子相互作用、希格斯玻色子玻色子的轻子味违反衰变和暗规范玻色子模型。

英文摘要:

The entropy of the Higgs boson decay probabilities distribution in the Standard Model (SM) is maximized for a Higgs mass value that is less than one standard deviation away from the current experimental measurement. This successful estimate of the Higgs mass encourages us to propose tests of the Maximum Entropy Principle (MEP) as a tool for theoretical inferences in other instances of Higgs physics. In this letter, we show that, irrespective of the extension of the SM predicting a new Higgs boson decay channel, its branching ratio can be inferred to be around 7% in such a way that the new entropy of decays still exhibits a maximum at the experimental Higgs mass. This 7% rule can be tested whenever a new Higgs decay channel is found. In order to illustrate the MEP predictions, we apply the MEP inference to Higgs portal models, Higgs-axion interactions, lepton flavour violating decays of the Higgs boson, and a dark gauge boson model.

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