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arXiv 0911.4483hep-ph
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复合非弹性暗物质模型中的宇称破坏

Parity Violation in Composite Inelastic Dark Matter Models

Mariangela Lisanti, Jay G. Wacker

摘要:

最近的实验结果表明,暗物质部门可能有一个非最小的结构与光谱的状态和相互作用。非弹性散射在DAMA的年度调制信号中受到了特别的关注。复合非弹性暗物质(CiDM)为非弹性暗物质模型中的质量分裂提供了动力学起源。我们表明,在CiDM拉格朗日的高维运营商导致非弹性和弹性散射的奇偶违反的存在下的混合物。这种情况下是一致的直接检测实验,即使奇偶违反几乎是最大的。我们提出了一个有效场论描述这样的模型,并讨论了直接检测实验的限制。具有宇称破坏的CiDM模型具有非平凡的现象学,因为允许多个散射通道。

英文摘要:

Recent experimental results indicate that the dark matter sector may have a non-minimal structure with a spectrum of states and interactions. Inelastic scattering has received particular attention in light of DAMA's annual modulation signal. Composite inelastic dark matter (CiDM) provides a dynamical origin for the mass splittings in inelastic dark matter models. We show that higher dimensional operators in the CiDM Lagrangian lead to an admixture of inelastic and elastic scattering in the presence of parity violation. This scenario is consistent with direct detection experiments, even when parity violation is nearly maximal. We present an effective field theory description of such models and discuss the constraints from direct detection experiments. The CiDM model with parity violation has non-trivial phenomenology because of the multiple scattering channels that are allowed.

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