加载中…
Heavy axion-like particles, called axizillas, are simple extensions of the standard model(SM). An axizilla is required not to couple to the quarks, leptons, and Brout-Englert-Higgs doublets of the SM, but couple to the gauge anomalies of the and photon. It is possible to have its branching ratios(BRs) to two photons greater than 10% and to two ’s less than 10%. To have a (production cross section)(BR to di-photons) at a level, a TeV scale heavy quark is required for the gluon–quark fusion process. The decay of to axizilla plus quark, and the subsequent decay of the axizilla to two photons can be fitted at the required level of .

生成讲解博客的中文版本

生成AI智能校验的中文版本