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arXiv 0709.0858hep-phhep-th
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在轨道方案中直接探测中性伴子暗物质的前景

Prospects for the direct detection of neutralino dark matter in orbifold scenarios

D. G. Cerdeno, T. Kobayashi, C. Munoz

摘要:

我们分析了从杂化超弦的轨道方案的现象学,以及由此产生的中性伴子暗物质的直接检测的理论预测。特别是,我们研究了这些结构的参数空间,计算低能谱,并考虑到最近的实验和天体物理学的限制,以及施加的情况下,危险的电荷和色破极小。在剩余的允许区域的中性子质子截面的自旋无关的部分进行了计算和比较的灵敏度的暗物质探测器。除了通常的非普适性的软条款在orbifold的情况下,由于模块重量的依赖,我们还考虑D-长期贡献标量质量。这些是由异常U(1)的存在产生的,在所得的软项中提供了更多的灵活性,并且对于避免电荷和颜色破坏最小值至关重要。由于D项的贡献,可以在预计的暗物质探测器的范围内发现大的中性伴子探测截面。

英文摘要:

We analyse the phenomenology of orbifold scenarios from the heterotic superstring, and the resulting theoretical predictions for the direct detection of neutralino dark matter. In particular, we study the parameter space of these constructions, computing the low-energy spectrum and taking into account the most recent experimental and astrophysical constraints, as well as imposing the absence of dangerous charge and colour breaking minima. In the remaining allowed regions the spin-independent part of the neutralino-proton cross section is calculated and compared with the sensitivity of dark matter detectors. In addition to the usual non universalities of the soft terms in orbifold scenarios due to the modular weight dependence, we also consider D-term contributions to scalar masses. These are generated by the presence of an anomalous U(1), providing more flexibility in the resulting soft terms, and are crucial in order to avoid charge and colour breaking minima. Thanks to the D-term contribution, large neutralino detection cross sections can be found, within the reach of projected dark matter detectors.

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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