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arXiv 1003.5905hep-ph
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中微子望远镜中暗物质事件率的直接探测限制和对撞机的意义

Direct Detection Constraints on Dark Matter Event Rates in Neutrino Telescopes, and Collider Implications

Prateek Agrawal, Zackaria Chacko, Can Kilic, Rashmish K. Mishra

摘要:

中微子望远镜正在寻找探测太阳中弱相互作用大质量粒子(WIMP)暗物质湮灭产生的中微子。事件发生率取决于太阳中的暗物质密度,而暗物质密度又取决于带有核子的WIMP的截面。然而,这受到直接检测实验的限制。我们使用这些实验的约束条件,将模型无关的上限事件发生率在中微子望远镜,适用于任何弹性暗物质模型。由于自旋无关的WIMP-核子截面比相应的自旋相关的截面受到更严格的约束,在前一种情况下,边界要强得多,并且与IceCube的当前限制竞争。如果在中微子望远镜中观测到的事件数量超过了与自旋无关的相互作用对应的上限,这意味着暗物质与核子的横截面由自旋相关的相互作用主导。在这种情况下,自然的暗物质候选者是马约拉纳费米子和实矢量玻色子,因此暗物质粒子是它们自己的反粒子。我们表明,任何这样的理论,导致可观察到的事件率在当前一代中微子望远镜将在一般情况下包含新的粒子下的标准模型规范组,自然位于一个质量范围内,是运动学上可访问的大型强子对撞机(LHC)。

英文摘要:

Neutrino telescopes are looking to detect neutrinos produced by the annihilation of weakly interacting massive particle (WIMP) dark matter in the sun. The event rate depends on the dark matter density in the sun, which in turn is dictated by the cross section of WIMPs with nucleons. This however is bounded by direct detection experiments. We use the constraints from these experiments to place model-independent upper bounds on the event rates in neutrino telescopes that apply to any elastic dark matter model. Since the spin-independent WIMP-nucleon cross section is much more tightly constrained than the corresponding spin-dependent cross section, the bounds are much stronger in the former case and are competitive with the current limits from IceCube. If the number of events observed in neutrino telescopes exceeds the upper bound corresponding to spin-independent interactions, the implication is that the cross section of dark matter with nucleons is dominated by spin-dependent interactions. In such a scenario the natural dark matter candidates are Majorana fermions and real vector bosons, so that dark matter particles are their own anti-particles. We show that any such theory that leads to observable event rates at current generation neutrino telescopes will in general contain new particles charged under the Standard Model gauge groups that naturally lie in a mass range that is kinematically accessible to the Large Hadron Collider (LHC).

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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