Connecting the Muon Anomalous Magnetic Moment and the Multi-lepton Anomalies at the LHC

Abstract

A number of predictions were made in von Buddenbrock et al (2016 Eur. Phys. J. C 76, 10, 580) pertaining to the anomalous production of multiple leptons at the Large Hadron Collider. Discrepancies in multi-lepton final states have now become statistically compelling with the available Run~2 data. These could be connected with a heavy boson, $H$, decaying predominantly into a SM Higgs boson, $h$, and a singlet scalar, $S$, where $m_H\approx 270$\,GeV and $m_S\approx 150$\,GeV. These can be embedded into a scenario where a Two Higgs Doublet is considered with an additional singlet scalar, 2HDM+S. The long-standing discrepancy in the muon anomalous magnetic moment, $\Delta a_{\mu }$, is interpreted in the context of the 2HDM+S type-II and type-X, along with additional fermionic degrees of freedom. The 2HDM+S model alone with the constraints from the LHC data does not seem to explain the $\Delta a_{\mu }$ anomaly. However, adding fermions with mass of order $\mathcal{O}(100)$\,GeV can explain the discrepancy for low enough values of fermion-scalar couplings.

arXiv comment8 pages, 6 figures, to be published in Chinese Physics C

References in corpus (23)

• Final Report of the Muon E821 Anomalous Magnetic Moment Measurement at BNL
• The Muon g-2
• Measurement of the Negative Muon Anomalous Magnetic Moment to 0.7 ppm
• (g-2)_mu and alpha(M_Z^2) re-evaluated using new precise data
• Precise Measurement of the Positive Muon Anomalous Magnetic Moment
• Updated NNLO QCD predictions for the weak radiative B-meson decays
• Flavor constraints on two-Higgs-doublet models with general diagonal Yukawa couplings
• Radiative Corrections to the $Zb\bar{b}$ Vertex and Constraints on Extended Higgs Sectors
• $\bar{B}\to X_s\gamma$ in the Two Higgs Doublet Model up to Next-to-Next-to-Leading Order in QCD
• Limiting two-Higgs-doublet models
• Building and testing models with extended Higgs sectors
• The Two Higgs Doublet of Type II facing flavour physics data
• The N2HDM under Theoretical and Experimental Scrutiny
• New Physics Contributions to the Muon Anomalous Magnetic Moment: A Numerical Code
• B_{s,d} -> l+ l- in a Two-Higgs-Doublet Model
• Phenomenological signatures of additional scalar bosons at the LHC
• Search for heavy lepton resonances decaying to a $Z$ boson and a lepton in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Massive vectors and loop observables: the $g-2$ case
• Search for evidence of the type-III seesaw mechanism in multilepton final states in proton-proton collisions at sqrt(s) = 13 TeV
• The emergence of multi-lepton anomalies at the LHC and their compatibility with new physics at the EW scale
• Search for type-III Seesaw heavy leptons in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS Detector
• Minimal muon anomalous magnetic moment
• Constraints on a 2HDM with a singlet scalar and implications in the search for heavy bosons at the LHC

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• Inverse seesaw and $(g-2)$ anomalies in $B-L$ extended two Higgs doublet model
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• Connecting multi-lepton anomalies at the LHC and in Astrophysics with MeerKAT/SKA
• Probing the muon (g-2) anomaly at the LHC in final states with two muons and two taus
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• Machine learning approach for the search of resonances with topological features at the Large Hadron Collider
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