Probing the muon g−2 anomaly with the Higgs boson at a muon collider
Probing the muon g−2 anomaly with the Higgs boson at a muon collider
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DOI：
10.1103/physrevd.104.075021
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发表时间：
2020-12
影响因子：
5
通讯作者：
D. Buttazzo;P. Paradisi
中科院分区：
文献类型：
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作者：
D. Buttazzo;P. Paradisi
我们指出，轻子偶极矩和轻子对进入希格斯玻色子和光子的高能截面的重大新物理贡献是独立于模型连接的。特别是，我们证明了运行在质心能量为几TeV的μ子对撞机，可以通过研究${\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}\ensuremath{\rightarrow}h\ensuremath{\gamma}$等高能过程，为μ子$g\ensuremath{-}2$中的新物理提供独特的测试。这种高能测试对于揭示长期存在的μ子$g\ensuremath{-}2$异常非常重要，因为它不受强子和实验不确定性的影响，进入当前的μ子低能测定$g\ensuremath{-}2$。此外，我们表明介子电偶极矩的电流束缚可以提高三个数量级，降低到$\mathrm{few}\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}22}\text{ }\text{ }e\text{ }\mathrm{cm}$。
We point out that heavy new physics contributions in leptonic dipole moments and high-energy cross sections of lepton pairs into Higgs bosons and photons are connected model-independently. In particular, we demonstrate that a muon collider, running at center-of-mass energies of several TeV, can provide a unique test of new physics in the muon $g\ensuremath{-}2$ through the study of high-energy processes such as ${\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}\ensuremath{\rightarrow}h\ensuremath{\gamma}$. This high-energy test would be of the utmost importance to shed light on the longstanding muon $g\ensuremath{-}2$ anomaly as it is not affected by the hadronic and experimental uncertainties entering the current low-energy determination of the muon $g\ensuremath{-}2$. Furthermore, we show that the current bound on the muon electric dipole moment can be improved by three orders of magnitude, down to $\mathrm{few}\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}22}\text{ }\text{ }e\text{ }\mathrm{cm}$.