Dermisek Radovan, Hermanek Keith, McGinnis Navin
Physics Department, Indiana University, Bloomington, Indiana 47405, USA.
Argonne National Laboratory, High Energy Physics Division, Argonne, Illinois 60439, USA.
Phys Rev Lett. 2021 May 14;126(19):191801. doi: 10.1103/PhysRevLett.126.191801.
We show that, in a two Higgs doublet model type II extended by vectorlike leptons, the contributions from heavy neutral and charged Higgs bosons to the anomalous magnetic moment of the muon simultaneously feature chiral enhancement from masses of new leptons and tan^{2}β enhancement from couplings of Higgs bosons. Assuming moderate values of new Yukawa couplings, not exceeding one, that can remain perturbative to very high energy scales, the measured value of muon g-2 can be explained within one standard deviation even with 6.5 TeV leptons or 20 TeV Higgs bosons. Allowing new couplings near the perturbativity limit, these mass ranges extend to 45 TeV for leptons and 185 TeV for Higgs bosons. In spite of the high scale of new physics, this scenario can be completely probed at planned future colliders.
我们表明，在由类矢量轻子扩展的II型双希格斯二重态模型中，重中性和带电希格斯玻色子对μ子反常磁矩的贡献同时具有来自新轻子质量的手征增强和来自希格斯玻色子耦合的tan²β增强。假设新的汤川耦合为适度值，不超过1，且在非常高的能量尺度下仍能保持微扰性，即使对于6.5 TeV的轻子或20 TeV的希格斯玻色子，μ子g - 2的测量值也能在一个标准差内得到解释。若允许新耦合接近微扰极限，这些质量范围对于轻子可扩展到45 TeV，对于希格斯玻色子可扩展到185 TeV。尽管新物理的尺度很高，但这种情形在计划中的未来对撞机上可以得到完全探测。
