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复合电弱-中性暗物质的信号:LHC/直接探测的相互作用

Signals of composite electroweak-neutral Dark Matter: LHC/Direct Detection interplay

Riccardo Barbieri, Slava Rychkov, Riccardo Torre

摘要:

在电弱对称性破缺的强耦合图中,一个在TeV质量范围内的复合电弱中性态,携带一个全局(准)守恒电荷,使一个看似合理的暗物质(DM)候选者,正在进行的直接DM搜索对预期的信号非常敏感。为了利用直接DM搜索和大型强子对撞机之间的关键相互作用,我们考虑一个复合的等单线态矢量$V$,混合超荷规范场,作为DM粒子和核之间的相互作用的基本介质。基于一个合适的有效手征拉格朗日量,我们给出了$V$的预期性质和产生率,表明在LHC最大能量约100 fb^{-1}的积分亮度下可能发现它.

英文摘要:

In a strong-coupling picture of ElectroWeak Symmetry Breaking, a composite electroweak-neutral state in the TeV mass range, carrying a global (quasi-)conserved charge, makes a plausible Dark Matter (DM) candidate, with the ongoing direct DM searches being precisely sensitive to the expected signals. To exploit the crucial interplay between direct DM searches and the LHC, we consider a composite iso-singlet vector $V$, mixed with the hypercharge gauge field, as the essential mediator of the interaction between the DM particle and the nucleus. Based on a suitable effective chiral Lagrangian, we give the expected properties and production rates of $V$, showing its possible discovery at the maximal LHC energy with about 100 fb^{-1} of integrated luminosity.

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