Signatures of large composite Dark Matter states
Signatures of large composite Dark Matter states
复制标题
大型复合暗物质态的特征
DOI：
10.1007/jhep07(2015)133
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发表时间：
2015
影响因子：
5.4
通讯作者：
Hardy E
中科院分区：
文献类型：
--
作者：
Hardy E
我们研究了大型复合暗物质（DM）状态与标准模型（SM）扇区的相互作用。与SM核的弹性散射可以相干地增强的因素大到A 2，其中A是在复合状态的成分的数量（存在的模型中，DM状态非常大的A 10 8可以实现）。对于给定的直接探测事件率，这种增强使碰撞机处的预期信号减弱高达1/A。此外，DM状态的空间扩展性质导致额外的特征形状因子修改散射过程的动量依赖性，改变直接检测实验中的反冲能谱。特别是，能量反冲光谱的波峰和波谷是可能的，这样的功能可以证实与onlyevents，独立于假设的晕速度分布。大的复合态通常也会产生与直接探测和间接探测现象学潜在相关的低能集体激发。我们计算的形状因子为一类通用的这样的激发量子化的表面模式，发现它们可以导致相干增强，但一般次主导，非弹性散射在直接检测实验。最后，我们研究了天体物理对象的捕获率的修改，遵循弹性形状因子，以及DM状态之间的非弹性相互作用的影响，一旦捕获。我们认为，非弹性相互作用可能会导致DM崩溃到一个密集的配置在该对象的中心。
We investigate the interactions of large composite dark matter (DM) states with the Standard Model (SM) sector. Elastic scattering with SM nuclei can be coherently enhanced by factors as large as A 2, where A is the number of constituents in the composite state (there exist models in which DM states of very large A≳ 10 8 may be realised). This enhancement, for a given direct detection event rate, weakens the expected signals at colliders by up to 1/A. Moreover, the spatially extended nature of the DM states leads to an additional, characteristic, form factor modifying the momentum dependence of scattering processes, altering the recoil energy spectra in direct detection experiments. In particular, energy recoil spectra with peaks and troughs are possible, and such features could be confirmed with onlyevents, independently of the assumed halo velocity distribution. Large composite states also generically give rise to low-energy collective excitations potentially relevant to direct detection and indirect detection phenomenology. We compute the form factor for a generic class of such excitations—quantised surface modes—finding that they can lead to coherently-enhanced, but generally sub-dominant, inelastic scattering in direct detection experiments. Finally, we study the modifications to capture rates in astrophysical objects that follow from the elastic form factor, as well as the effects of inelastic interactions between DM states once captured. We argue that inelastic interactions may lead to the DM collapsing to a dense configuration at the centre of the object.
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影响因子：
6.4
作者：
E. Nobile;G. Gelmini;P. Gondolo;Ji-Haeng Huh
通讯作者：
E. Nobile;G. Gelmini;P. Gondolo;Ji-Haeng Huh
影响因子：
5
作者：
P. Fox;G. Kribs;T. Tait
通讯作者：
P. Fox;G. Kribs;T. Tait
非拓扑孤子的原始起源。
影响因子：
8.6
作者：
Frieman;Gelmini;Gleiser;Kolb
通讯作者：
Kolb
暗物质反问题：从散射事件中提取粒子物理
影响因子：
5
作者：
Samuel D. McDermott;Hai;K. Zurek
通讯作者：
K. Zurek
影响因子：
5
作者：
C. McCabe
通讯作者：
C. McCabe