论文标题
暗物质 - 核子相互作用中的取消：非标准模式的Yukawa耦合的作用
Cancellation in Dark Matter-Nucleon Interactions: the Role of Non-Standard-Model-like Yukawa Couplings
论文作者
论文摘要
几十年来，已经进行了大量探测暗物质（DM）的粒子性质（DM）的搜索，但是到目前为止，尚未找到任何结论性证据。在各种选择中，弱相互作用的巨大颗粒（WIMP）仍然是TEV量表附近DM的候选者的主要可能性之一。从现象学的角度来看，如果我们允许光Quark Yukawa耦合假设非标准模型（非SM）样值，则可以在Higgs-Portal方案中为通用的WIMP解释这种无效结果。这是由于DM核子散射中不同项之间的取消，这反过来又导致了一个消失的小型直接检测横截面。这也可能导致DM核苷散射中的同种侵犯。可以在LHC的高光度运行中探测这种光Quark Yukawa耦合的非SM值。
Extensive searches to probe the particle nature of dark matter (DM) have been going on for some decades now but, so far, no conclusive evidence has been found. Among various options, the Weakly Interacting Massive Particles (WIMP) remains one of the prime possibilities as candidates for DM near the TeV scale. Taking a phenomenological view, such null results may be explained for a generic WIMP in a Higgs-portal scenario if we allow the light-quark Yukawa couplings to assume non-Standard Model (non-SM)-like values. This follows from a cancellation among different terms in the DM-nucleon scattering which can, in turn, lead to a vanishingly small direct-detection cross section. It might also lead to isospin violation in the DM-nucleon scattering. Such non-SM values of light-quark Yukawa couplings may be probed in the high luminosity run of the LHC.
