arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0905.2772hep-phastro-ph.COhep-th
收藏

小希格斯模型中的拓扑暗物质

Topological Dark Matter in the Little Higgs Models

Anosh Joseph, S. G. Rajeev

摘要:

我们证明了某些对称破缺SU(N)-> SO(N)(N >= 4)的小Higgs模型中存在拓扑稳定的孤子,这些孤子可能对宇宙学暗物质有贡献.在SU(5)→ SO(5)情形下,我们构造了一个球对称孤子,并估计了它的质量.其下限约为10.3 TeV。这个粒子是费米子还是玻色子取决于基础理论的整数值参数的值,类似于QCD的颜色数。在这两种情况下,粒子都是中性的。如果它是费米子,它就是马约拉纳粒子,它可以参与中微子质量的跷跷板机制。

英文摘要:

We show that certain little Higgs models with symmetry breaking SU(N) -> SO(N) for N >= 4 admit topologically stable solitons that may contribute to cosmological dark matter. We have constructed a spherically symmetric soliton and estimated its mass in the case of SU(5) -> SO(5). Its lower bound is found to be around 10.3 TeV. Whether this particle is a fermion or a boson depends on the value of an integer-valued parameter of the underlying theory, analogous to the number of colors of QCD. In either case, the particle is neutral. If it is a fermion, it is a Majorana particle, which could take part in a seesaw mechanism for neutrino masses.

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。

↑