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arXiv 0806.1962hep-phastro-phhep-ex
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暗物质散射的自旋依赖性

Spin Dependence of Dark Matter Scattering

Vernon Barger, Wai-Yee Keung, Gabe Shaughnessy

摘要:

通过自旋相关散射发现弱相互作用暗物质(DM)粒子的新实验可以区分电弱对称性破缺的模型。自旋相关与自旋无关的DM散射截面的平面是一个强大的模型诊断。我们详细的mSUGRA,单重扩展SM和MSSM,一个新的狄拉克中微子,最小希格斯与T-宇称(LHT)和最小通用额外尺寸(mUED)模型的代表性预测。在这些模型中,nMSSM具有最大的自旋相关(SD)截面。它有一个非常轻的中性伴子,这将产生较低能量的核反冲。mSUGRA,mUED和右手中微子的焦点区域也预测了一个非常大的SD截面,并预测了在冰立方实验中来自太阳中暗物质湮灭的高能中微子的大信号。我们还描述了一个模型独立的治疗不同的内在自旋的DM粒子的散射。

英文摘要:

New experiments designed to discover a weakly interacting dark matter (DM) particle via spin dependent scattering can distinguish models of electroweak symmetry breaking. The plane of spin dependent versus spin independent DM scattering cross sections is a powerful model diagnostic. We detail representative predictions of mSUGRA, singlet extended SM and MSSM, a new Dirac neutrino, Littlest Higgs with T-parity (LHT) and Minimal Universal Extra Dimensions (mUED) models. Of these models, the nMSSM has the largest spin dependent (SD) cross section. It has a very light neutralino which would give lower energy nuclear recoils. The Focus Point region of mSUGRA, mUED and the right handed neutrino also predict a very large SD cross section and predict a large signal of high energy neutrinos in the IceCube experiment from annihilations of dark matter in the Sun. We also describe a model independent treatment of the scattering of DM particles of different intrinsic spins.

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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