Constraining the heavy leptophilic neutral gauge bosons through the $Z\to {\ell }^{+}{\ell }^{-}$, $W^{\pm }\to {\ell }^{\pm }{\nu }_{\ell }$, and $h\to {\ell }^{+}{\ell }^{-}$ decays

Abstract

We consider the hypothetical possibility of neutral gauge bosons ($Z^{\prime }$) with flavor-specific leptophilic couplings. For such New Physics (NP) interactions, the current experimental constraints are much relaxed in the heavy mass regime, particularly for masses $\ge \mathcal{O}(1)$ TeV. However, in the presence of a leptophilic $Z^{\prime }$, leptonic decay modes of the electroweak gauge bosons and Higgs can be corrected at the loop level. Using the existing upper bounds on the corresponding decay widths, we find that one can impose stronger exclusion limits on the interactions of a heavy $Z^{\prime }$. Future updates on the aforesaid decay channels can be used in complementarity with the proposed lepton colliders to probe even weaker leptophilic NP interactions at the TeV scale and beyond.

24 pages, 4 figures, 1 table

References in corpus (33)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• New Fixed-Target Experiments to Search for Dark Gauge Forces
• Neutrino Trident Production: A Powerful Probe of New Physics with Neutrino Beams
• Upper Limits on the Isotropic Gravitational-Wave Background from Advanced LIGO's and Advanced Virgo's Third Observing Run
• Stellar cooling bounds on new light particles: plasma mixing effects
• Search for $A^{\prime }\to {\mu }^{+}{\mu }^{-}$ decays
• Cosmology With a Very Light $L_{\mu }-L_{\tau }$ Gauge Boson
• Search for light massive gauge bosons as an explanation of the $(g-2{)}_{\mu }$ anomaly at MAMI
• The anomalous magnetic moment of the muon in the Standard Model: an update
• Gauged $L_{\mu }^{}-L_{\tau }^{}$ at a muon collider
• Gravitational waves from the minimal gauged $U(1{)}_{B-L}$ model
• Leptophilic Dark Matter with $Z^{\prime }$ interactions
• Neutrino Mass, Dark Matter and Anomalous Magnetic Moment of Muon in a $U(1{)}_{L_{\mu }-L_{\tau }}$ Model
• Leptogenesis triggered by a first-order phase transition
• The LHC Discovery Potential of a Leptophilic Higgs
• The Heavy Photon Search Test Detector
• Global Analysis of Leptophilic Z' Bosons
• Collider limits on leptophilic interactions
• TeV Scale Resonant Leptogenesis with $L_{\mu }-L_{\tau }$ Gauge Symmetry in the Light of Muon $(g-2)$
• Measurement of the W-boson mass and width with the ATLAS detector using proton-proton collisions at $\sqrt{s}$ = 7 TeV
• Searching for Heavy Leptophilic $Z^{\prime }$: from Lepton Colliders to Gravitational Waves
• Search for an invisible $Z^{\prime }$ in a final state with two muons and missing energy at Belle II
• Search for $Z^{{}^{\prime }}\to {\mu }^{+}{\mu }^{-}$ in the $L_{\mu }-L_{\tau }$ gauge-symmetric model at Belle
• Neutrino mass, mixing and muon $g-2$ explanation in $U(1{)}_{L_{\mu }-L_{\tau }}$ extension of left-right theory
• Search for a ${\tau }^{+}{\tau }^{-}$ resonance in $e^{+}{e}^{-}\to {\mu }^{+}{\mu }^{-}{\tau }^{+}{\tau }^{-}$ events with the Belle II experiment
• High-precision measurement of the W boson mass with the CMS experiment
• Leptophilic $Z^{\prime }$ bosons at the FCC-ee: discovery opportunities
• Searching for the light leptophilic gauge boson $Z_x$ via four-lepton final states at the CEPC
• The Revival of $U(1{)}_{L_e-L_{\mu }}$: A Natural Solution for $(g-2{)}_{\mu }$ with a Sub-GeV Dark Matter
• Exploring the Null Results in the Direct Detection Experiments, $(g-2{)}_{\ell }$ and Neutrino Mass in an Extended $U(1{)}_{L_{\mu }-L_{\tau }}$ Model Constrained through the $Z\to {\ell }^{+}{\ell }^{-}$ Decays
• Measurement of the Z-boson mass
• Search for charged lepton flavor violating Z and Z' boson decays in proton-proton collisions at $\sqrt{s}$ = 13 TeV