Detecting the $L_{\mu }-L_{\tau }$ gauge boson at Belle II

Abstract

We discuss the feasibility of detecting the gauge boson of the $U(1{)}_{L_{\mu }-L_{\tau }}$ symmetry, which possesses a mass in the range between MeV and GeV, at the Belle-II experiment. The kinetic mixing between the new gauge boson $Z^{\prime }$ and photon is forbidden at the tree level and is radiatively induced. The leptonic force mediated by such a light boson is motivated by the discrepancy in muon anomalous magnetic moment and also the gap in the energy spectrum of cosmic neutrino. Defining the process $e^{+}{e}^{-}\to \gamma Z^{\prime }\to \gamma \nu \bar{\nu }(missingenergy)$ to be the signal, we estimate the numbers of the signal and the background events and show the parameter region to which the Belle-II experiment will be sensitive. The signal process in the $L_{\mu }-L_{\tau }$ model is enhanced with a light $Z^{\prime }$, which is a characteristic feature differing from the dark photon models with a constant kinetic mixing. We find that the Belle-II experiment with the design luminosity will be sensitive to the $Z^{\prime }$ with the mass $M_{Z^{\prime }}\lesssim 1$ GeV and the new gauge coupling $g_{Z^{\prime }}\gtrsim 8\cdot 10^{-4}$, which covers a half of the unconstrained parameter region that explains the discrepancy in muon anomalous magnetic moment. The possibilities to improve the significance of the detection are also discussed.

arXiv comment10 pages, 10 figures: v2; title changed, references added, FIG. 4,5,7, and 8 changed, Footnotes added, conclusion unchanged

References in corpus (79)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• 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
• Evidence for oscillation of atmospheric neutrinos
• Particle Dark Matter: Evidence, Candidates and Constraints
• Final Report of the Muon E821 Anomalous Magnetic Moment Measurement at BNL
• Measurement of the rate of nu_e + d --> p + p + e^- interactions produced by 8B solar neutrinos at the Sudbury Neutrino Observatory
• A Theory of Dark Matter
• Observation of High-Energy Astrophysical Neutrinos in Three Years of IceCube Data
• Secluded U(1) below the weak scale
• Reevaluation of the Hadronic Contributions to the Muon g-2 and to alpha(MZ)
• Scalar Dark Matter candidates
• Complete Tenth-Order QED Contribution to the Muon g-2
• (g-2)_mu and alpha(M_Z^2) re-evaluated using new precise data
• Hadronic light-by-light scattering contribution to the muon anomalous magnetic moment revisited
• Precision measurement of the 7Be solar neutrino interaction rate in Borexino
• Hadronic contribution to the muon anomalous magnetic moment to next-to-next-to-leading order
• Neutrino Trident Production: A Powerful Probe of New Physics with Neutrino Beams
• Explaining $h\to {\mu }^{\pm }{\tau }^{\mp }$, $B\to K^{\ast }{\mu }^{+}{\mu }^{-}$ and $B\to K{\mu }^{+}{\mu }^{-}/B\to K{e}^{+}{e}^{-}$ in a two-Higgs-doublet model with gauged $L_{\mu }-L_{\tau }$
• Observation of Anomalous Internal Pair Creation in ${}^8$Be: A Possible Signature of a Light, Neutral Boson
• Dressing L_mu - L_tau in Color
• Implications of Generalized Z-Z' Mixing
• U-boson production in e+e- annihilations, psi and Upsilon decays, and Light Dark Matter
• Study of the decay K+ => pi+,nu,nubar in the momentum region 140<Ppi<199 MeV/c
• Dissipative hidden sector dark matter
• Sommerfeld Enhancements for Thermal Relic Dark Matter
• Exploring nu signals in dark matter detectors
• Probing Dark Forces and Light Hidden Sectors at Low-Energy e+e- Colliders
• A ménage à trois of eV-scale sterile neutrinos, cosmology, and structure formation
• Protophobic Fifth Force Interpretation of the Observed Anomaly in ${}^8$Be Nuclear Transitions
• Muon Anomalous $g-2$ and Gauged $L_{\mu }-L_{\tau }$ Models
• Gauged L_mu - L_tau Symmetry at the Electroweak Scale
• Explaining Dark Matter and $B$ Decay Anomalies with an $L_{\mu }-L_{\tau }$ Model
• Constraining Light Dark Matter with Low-Energy e+e- Colliders
• Search for a muonic dark force at BABAR
• Muon g-2, Rare Kaon Decays, and Parity Violation from Dark Bosons
• How secret interactions can reconcile sterile neutrinos with cosmology
• The muon anomalous magnetic moment and a new light gauge boson
• Coherent Propagation of PeV Neutrinos and the Dip in the Neutrino Spectrum at IceCube
• Model for a Light Z' Boson
• Cosmic neutrino cascades from secret neutrino interactions
• Lepton flavor violating Z' explanation of the muon anomalous magnetic moment
• Constraints on Dark Photon from Neutrino-Electron Scattering Experiments
• Muonic hydrogen and MeV forces
• Higgs $\to \mu \tau$ in Abelian and Non-Abelian Flavor Symmetry Models
• Probing BSM Neutrino Physics with Flavor and Spectral Distortions: Prospects for Future High-Energy Neutrino Telescopes
• A Flavor Symmetry for quasi-degenerate Neutrinos: L_mu-L_tau
• Muon g-2 and searches for a new leptophobic sub-GeV dark boson in a missing-energy experiment at CERN
• Lepton Flavor Violating Non-Standard Interactions via Light Mediators
• IceCube PeV-EeV Neutrinos and Secret Interactions of Neutrinos
• Probing MeV Dark Matter at Low--Energy $e^{+}{e}^{-}$ Colliders
• Proton size anomaly
• Constraints on Light Dark Matter and U bosons, from psi, Upsilon, K+, pi0, eta and eta' decays
• Neutrinophilic Non-Standard Interactions
• Phenomenology of $U(1{)}_{L_{\mu }-L_{\tau }}$ charged dark matter at PAMELA/FERMI and colliders
• Search for heavy neutrinos in $K^{+}\to {\mu }^{+}{\nu }_H$ decays
• Self-interacting asymmetric dark matter coupled to a light massive dark photon
• Constraints on New Neutrino Interactions via Light Abelian Vector Bosons
• Light dark photon and fermionic dark radiation for the Hubble constant and the structure formation
• Muon g-2 and LHC phenomenology in the $L_{\mu }-L_{\tau }$ gauge symmetric model
• MeV scale leptonic force for cosmic neutrino spectrum and muon anomalous magnetic moment
• Neutrino Mass, Dark Matter and Anomalous Magnetic Moment of Muon in a $U(1{)}_{L_{\mu }-L_{\tau }}$ Model
• The light U boson as the mediator of a new force, coupled to a combination of Q, B, L and dark matter
• Mind the gap on Icecube: Cosmic neutrino spectrum and muon anomalous magnetic moment in the gauged L_μ - L_τ model
• Searching for MeV-Scale Gauge Bosons with IceCube
• Constraints on muon-specific dark forces
• CνB absorption line in the neutrino spectrum at IceCube
• Gauged L_mu - L_tau and different Muon Neutrino and Anti-Neutrino Oscillations: MINOS and beyond
• Lepton-Flavored Dark Matter
• Dark matter and muon $(g-2)$ in local $U(1{)}_{L_{\mu }-L_{\tau }}$-extended Ma Model
• Breaking of L_mu - L_tau Flavor Symmetry, Lepton Flavor Violation and Leptogenesis
• Protophobic Light Vector Boson as a Mediator to the Dark Sector
• U(1)_A symmetry in two-doublet models, U bosons or light scalars, and psi and Upsilon decays
• Constraining Non-Standard Interactions of the Neutrino with Borexino
• Mini Force: the (B-L) + xY gauge interaction with a light mediator
• Extending theories on muon-specific interactions
• On $Z\to \gamma \gamma$ decay and cancellation of axial anomaly in $Z\to \gamma \gamma$ transition amplitude for massive fermions
• Hidden Interactions of Sterile Neutrinos As a Probe For New Physics

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