Hidden confining world on the 750 GeV diphoton excess
Hidden confining world on the 750 GeV diphoton excess
复制标题
750 GeV 双光子过剩的隐藏世界
DOI：
10.1103/physrevd.93.095011
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发表时间：
2015-12
期刊：
影响因子：
--
通讯作者：
Jing Shu
中科院分区：
文献类型：
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作者：
Ligong Bian;Ning Chen;Da Liu;Jing Shu
我们解释了最近ATLAS和CMS在$750$ GeV附近的双光子超量为单重态标量$\Phi$，该标量仅通过高维算子与SM胶子和中性规范玻色子耦合。一个自然的解释是，$\Phi$是一个伪nambu - goldstone玻色子（pNGB），如果存在一个隐藏的强动力学，它就会通过异常违反宇称。单重态和其他轻pNGBs将衰变成两个SM规范玻色子，甚至可以作为未来可以探测的亚稳定色态。通过精确测量它们的相对衰减和未来的总产量，我们将了解潜在的强动力学参数。在这个限制理论中，最轻的重子可以作为一个可行的暗物质候选者。
We explain the recent diphoton excesses around $750$ GeV by both ATLAS and CMS as a singlet scalar $\Phi$ which couples to SM gluon and neutral gauge bosons only through higher dimensional operators. A natural explanation is that $\Phi$ is a pseudo-Nambu-Goldstone boson (pNGB) which receives parity violation through anomaly if there exists a hidden strong dynamics. The singlet and other light pNGBs will decay into two SM gauge bosons and even serves as the meta-stable coloured states which can be probed in the future. By accurately measuring their relative decay and the total production rate in the future, we will learn the underlying strong dynamics parameter. The lightest baryon in this confining theory could serve as a viable dark matter candidate.