Abstract Present experiments are sensitive to very weakly coupled extra gauge symmetries which motivates further investigation of their appearance in string theory compactifications and subsequent properties. We consider extensions of the standard model based on open strings ending on D-branes, with gauge bosons due to strings attached to stacks of D-branes and chiral matter due to strings stretching between intersecting D-branes. Assuming that the fundamental string mass scale saturates the current LHC limit and that the theory is weakly coupled, we show that (anomalous) U ( 1 ) gauge bosons which propagate into the bulk are compelling light dark matter candidates. We comment on the possible relevance of the U ( 1 ) gauge bosons, which are universal in intersecting D-brane models, to the observed 3σ excess in XENON1T.

中文翻译：

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异常 U(1) 规范玻色子作为弦理论中的轻暗物质

摘要 目前的实验对非常弱耦合的额外规范对称性很敏感，这促使进一步研究它们在弦理论紧缩化和后续性质中的出现。我们考虑基于开放弦以 D-膜结尾的标准模型的扩展，由于弦连接到 D-膜堆栈而产生规范玻色子，并且由于弦在相交 D-膜之间拉伸而产生手征物质。假设基本弦质量尺度使当前的 LHC 极限饱和并且该理论是弱耦合的，我们表明传播到体积中的（异常）U (1) 规范玻色子是引人注目的轻暗物质候选者。我们评论了 U ( 1 ) 规范玻色子与 XENON1T 中观察到的 3σ 过量的可能相关性，这些玻色子在交叉 D 膜模型中是通用的。