Warped unification, proton stability, and dark matter.
Warped unification, proton stability, and dark matter.
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DOI：
10.1103/physrevlett.93.231805
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发表时间：
2004-03
影响因子：
8.6
通讯作者：
K. Agashe;G. Servant
中科院分区：
文献类型：
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作者：
K. Agashe;G. Servant
我们表明，解决问题的重子数违反非超对称大统一理论（GUT）在扭曲的高维时空可以导致一个稳定的卡鲁扎-克莱因粒子。这种奇异粒子具有右手中微子的规范量子数，但携带分数重子数，并且与高维GUT中的顶夸克有关。重子数和SU（3）色的组合保证了它的稳定性。它的残余密度很容易达到10 GeV-几TeV范围内的质量的正确值。这些模型的一个令人兴奋的方面是，整个参数空间将在不久的将来的暗物质直接探测实验进行测试。顶夸克的其他奇特的大统一理论伙伴也很轻，可以在高能对撞机上产生，并具有独特的特征。
We show that solving the problem of baryon-number violation in nonsupersymmetric grand unified theories (GUT's) in warped higher-dimensional spacetime can lead to a stable Kaluza-Klein particle. This exotic particle has gauge quantum numbers of a right-handed neutrino, but carries fractional baryon number and is related to the top quark within the higher-dimensional GUT. A combination of baryon number and SU(3) color ensures its stability. Its relic density can easily be of the right value for masses in the 10 GeV-few TeV range. An exciting aspect of these models is that the entire parameter space will be tested at near future dark matter direct detection experiments. Other exotic GUT partners of the top quark are also light and can be produced at high energy colliders with distinctive signatures.