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arXiv 0710.2005hep-ph
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作为毫荷暗物质的StueckelbergZ '模型中的隐费米子

Hidden Fermion in Stueckelberg Z' Models as Milli-charged Dark Matter

Kingman Cheung, Tzu-Chiang Yuan

摘要:

隐藏的StueckelbergZ '模型被一对Dirac费米子增广。如果Z'的耦合强度与弱尺度耦合相当,那么我们就可以证明,这个隐藏的费米子-反费米子对可能是一个带有毫电荷的暗物质候选者,具有可行的残余密度。单色光子通量来自银河系中心,由于对这些毫荷电粒子的湮灭计算,并被证明是在下一代伽马射线实验的范围内。这一理论努力的特征对撞机签名是,如果运动学允许的话,施图克尔伯格Z'玻色子有一个巨大的不可见的宽度,衰变为隐藏的费米子-反费米子对。研究了这种Z'玻色子在LHC和ILC上的单独产生。

英文摘要:

The hidden Stueckelberg Z' model is augmented by a pair of Dirac fermions. If the Z' has a coupling strength comparable to weak scale coupling, one can show that this hidden fermion-antifermion pair could be a milli-charged dark matter candidate with a viable relic density. Monochromatic photon flux coming from the Galactic center due to pair annihilation of these milli-charged particles is calculated and is shown to be within reach of the next generation gamma-ray experiments. Characteristic collider signature of this theoretical endeavor is that the Stueckelberg Z' boson has a large invisible width decaying into the hidden fermion-antifermion pair if kinematically allowed. Singly production of this Z' boson at the LHC and ILC are studied.

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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