论文标题
夸克风味改变的希格斯从通用额外的维度衰减
Quark-flavor-changing Higgs decays from a universal extra dimension
论文作者
论文摘要
从四维的角度来看，Kaluza-Klein领域的表征，紧凑的通用额外维度的存在将通过通过某些紧凑型量表确定的效果（$ r^{ - 1} $确定的效果来改变低能的可观察到物，因为单循环级别，因此，单循环级别，因此与标准模型的物理现象特别相关。本文探讨了一个普遍的额外维度，这种新的物理对希格斯的贡献衰减$ h^{（0）} \ to q^{（0）}_αQ^{（0）}_β$，成对成对，与Quarks成对成对，与不同的decay过程中，在标准模型中，在标准模型中，在标准模型中均严格升级。有限结果，将其分解为$ r^{ - 1} \至\ infty $。提供了近似的短表达式，有效，适用于大型压实量表。我们估计，Kaluza-Klein贡献位于标准模型的预测以下，在$ 1.4 \，{\ rm TEV} <RM TEV} <r^{ - 1} <10 \，{\ rm tev} $之内，紧凑型尺度的预测较小约2至3个数量级。
Kaluza-Klein fields characterizing, from a four-dimensional viewpoint, the presence of compact universal extra dimensions would alter low-energy observables through effects determined by some compactification scale, $R^{-1}$, since the one-loop level, thus being particularly relevant for physical phenomena forbidden at tree level by the Standard Model. The present paper explores, for the case of one universal extra dimension, such new-physics contributions to Higgs decays $h^{(0)}\to q^{(0)}_αq^{(0)}_β$, into pairs of quarks with different flavors, a sort of decay process which, in the Standard Model, strictly occurs at the loop level. Finite results, decoupling as $R^{-1}\to \infty$, are calculated. Approximate short expressions, valid for large compactification scales, are provided. We estimate that Kaluza-Klein contributions lie below predictions from the Standard Model, being about 2 to 3 orders of magnitude smaller for compactification scales within $1.4\,{\rm TeV}<R^{-1}<10\,{\rm TeV}$.
