在 124-126GeV 处观测到的额外信号是否可能是由 Randall-Sundrum 轴子引起的？
Could the excess seen at 124-126 GeV be due to the Randall-Sundrum radion?
机构信息
Department of Physics, National Tsing Hua University, Hsinchu 300, Taiwan.
出版信息
Phys Rev Lett. 2012 Apr 6;108(14):141602. doi: 10.1103/PhysRevLett.108.141602.
Current Higgs boson searches in various channels at the LHC point to an excess at around 124-126 GeV due to a possibly standard-model-like Higgs boson. If one examines more closely the channels (γγ, WW(), and ZZ()) that have excess, this "Higgs boson" may be the Randall-Sundrum radion ϕ. Because of the trace anomaly, the radion has stronger couplings to the photon and gluon pairs. Thus, it will enhance the production rates into gg and γγ, while those for WW(), ZZ(), and b ̅b are reduced relative to their standard model values. We show that it can match well with the data from CMS for m(ϕ)=124 GeV, and the required scale Λ(ϕ)∼<ϕ> is about 0.68 TeV.
当前 LHC 上在各种通道中对希格斯玻色子的搜索指向在大约 124-126GeV 处的一个超出，这可能是由于一个类似标准模型的希格斯玻色子。如果人们更仔细地检查那些存在超出的通道（γγ、WW(）和 ZZ(）），那么这个“希格斯玻色子”可能是 Randall-Sundrum 辐射子 ϕ。由于迹反常，辐射子与光子和胶子对的耦合更强。因此，它将增强 gg 和 γγ 的产生率，而 WW(）、ZZ(）和 b ̅b 的产生率相对于它们的标准模型值则会降低。我们表明，它可以与 CMS 对于 m(ϕ)=124GeV 的数据很好地吻合，而所需的标度 Λ(ϕ)∼<ϕ>约为 0.68TeV。
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