标题： 轻希格斯粒子的耦合与等效原理的破坏 显示英文标题

标题： Couplings of a Light Dilaton and Violations of the Equivalence Principle

摘要： 如果实验发现稀释子，这将为弦理论提供有力的证据。 在亚毫米距离下，轻量级的稀释子可能出现在对万有引力平方反比定律的当前测试中。 在大额外维场景中，稀释子的Kaluza-Klein激发态也可能对超新星的冷却产生贡献。 为了量化这些效应，我们计算了低能稀释子与物质的耦合。 这些耦合主要来自于基本稀释子与胶子场强的耦合，该耦合从QCD标度中获得了显著增强。 我们表明，稀释子的探测将给出在弦尺度下的QCD耦合常数的直接测量。 特别关注违反等效原理的稀释子耦合的大小。 显示英文摘要

摘要： Experimental discovery of the dilaton would provide strong evidence for string theory. A light dilaton could show up in current tests of the inverse square law for gravity at sub-millimeter distances. In the large extra dimension scenario, Kaluza-Klein excitations of the dilaton can also contribute to the cooling of supernovae. In order to quantify these effects we compute the couplings of a low energy dilaton to matter. These predominantly arise from the fundamental dilaton coupling to the gluon field strength, which receives a sizable enhancement from QCD scaling. We show that detection of the dilaton will give a direct measurement of the QCD coupling constant at the string scale. Particular attention is paid to the size of equivalence principle violating dilaton couplings.