Abstract
We will examine the muon g-2 anomaly with the background of the Higgs global fit data in the framework of the Left-Right Twin Higgs (LRTH) Models. The joint constrains of the precision electroweak data, the 125 GeV Higgs data, the leptonic flavor changing decay mu rightarrow egamma decays, and the mass requirement of the right-handed neutrino nu _R, the vector-like top partner T and the heavy gauge boson W_H, m_{nu _R}>m_T>m_{W_H}, are all considered in our calculation. Furthermore, since the neutral scalar phi ^0 may be lighter than the 125 GeV Higgs, the direct searches from the hrightarrow phi ^0phi ^0 channels can impose stringent upper limits on Br(hrightarrow phi ^0phi ^0), which will reduce the allowed region of m_{phi ^0} and f, the vacuum expectation value of the SM right-handed Higgs H_R. It is concluded that the muon g-2 anomaly can be explained in the region of 700 GeV le fle 1100 GeV, 13 GeV le m_{phi ^0}le 55 GeV, 100 GeV le m_{phi ^pm }le 900 GeV, m_{nu _R}ge 15 TeV, and 200 GeV le Mle 800 GeV, after imposing all the constraints mentioned above, where M here means the mass mixing coefficient M bar{q}_Lq_R, allowed by gauge invariance.
Highlights
The muon anomalous magnetic moment (g − 2) is a very precisely measured observable, and expected to shed light on new physics
Which shows a 3.6σ discrepancy, hinting at tantalizing new physics beyond the Standard Model (SM). It is the difference between the experimental data and the SM prediction determines the room for new physics
Where the existence of the h → φ0φ0 means in the Left-Right Twin Higgs (LRTH) models when φ0 mass is less than mh/2, the channel h → φ0φ0 will be open, and the total width of h should changed into L RT H (h) + (h → φ0φ0), where L RT H (h) is corresponding to SM channels. (h → φ0φ0) can be written as (h → φ0φ0) = gh2φ0φ0 8π mh 2 φ m
Summary
The muon anomalous magnetic moment (g − 2) is a very precisely measured observable, and expected to shed light on new physics. [5,6,7,8,9] Among these extensions, the LRTH model may provide a explanation for the muon g − 2 anomaly. The LRTH model may provide a explanation for the muon g − 2 anomaly In these models, there are six massive gauge bosons left after the symmetry breaking: the SM Z and W ±, and extra heavier bosons, Z H and WH±. In this work we will examine the parameter space of LRTH by considering the joint constraints from the theory, the precision electroweak data, the 125 GeV Higgs signal data, the muon g − 2 anomaly, the lepton rare decay of μ → eγ , as well as the direct search limits from the LHC.
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