论文标题
质子和中子标量耦合的Ab-Initio计算新物理搜索的标量耦合
Ab-initio calculation of the proton and the neutron's scalar couplings for new physics searches
论文作者
论文摘要
许多低能的粒子物理学实验试图通过在原子核上寻找非常罕见的散射事件来揭示新的基本物理。对其结果的解释需要量化强相互作用对这种新物理与质子和中子的自旋依赖性耦合的非线性影响。在这里，我们提出了完全控制的，对这些核的夸克的完全控制的，在核的那些成分内的夸克。我们为四种最轻的夸克物种使用晶格量子彩色动力学计算，其余两种是夸克的膨胀。我们确定六个夸克贡献中的每一个，精度高于15％。我们的结果对于指导和解释宇宙暗物质的实验搜索尤其重要。
Many low-energy, particle-physics experiments seek to reveal new fundamental physics by searching for very rare scattering events on atomic nuclei. The interpretation of their results requires quantifying the non-linear effects of the strong interaction on the spin-independent couplings of this new physics to protons and neutrons. Here we present a fully-controlled, ab-initio calculation of these couplings to the quarks within those constituents of nuclei. We use lattice quantum chromodynamics computations for the four lightest species of quarks and heavy-quark expansions for the remaining two. We determine each of the six quark contributions with an accuracy better than 15%. Our results are especially important for guiding and interpreting experimental searches for our universe's dark matter.
