Probing hidden spin-2 mediator of dark matter with NA64e, LDMX, NA64$\mu$ and M${}^3$

Abstract

The connection between Standard Model (SM) particles and dark matter (DM) can be introduced via hidden spin-2 massive mediator. In the present paper we consider the simplified benchmark link between charged lepton sector of SM and DM particles which are considered to be a hidden Dirac fermions from the dark sector. The regarding couplings are established through the dimension-5 operators involving spin-2 mediator field and the energy-momentum tensors of both SM and DM sectors. We study in detail the implication of this scenario for the lepton fixed-target facilities, such as NA64$e$, LDMX, NA64$\mu$ and M${}^3$. In particular, for the specific experiment we discuss in detail the missing-energy signatures of spin-2 boson production followed by its invisible decay into stable DM pairs. Moreover, we derive the expected reaches of these experiments for the projected statistics of the leptons accumulated on the target. We also discuss the implication of both nuclear and atomic form-factor parametrizations for the differential spectra of hidden spin-$2$ boson emission, the total cross-section of its production and the experimental reach of the fixed-fixed target facilities for probing hidden spin-$2$ DM mediator.

14 pages, 8 figures

References in corpus (19)

• Measurement of the Positive Muon Anomalous Magnetic Moment to 0.46 ppm
• The anomalous magnetic moment of the muon in the Standard Model
• Secluded WIMP Dark Matter
• Gauge Singlet Scalars as Cold Dark Matter
• New Fixed-Target Experiments to Search for Dark Gauge Forces
• Nucleon Electromagnetic Form Factors
• Search for invisible decays of sub-GeV dark photons in missing-energy events at the CERN SPS
• The Validity of the Weizsacker-Williams Approximation and the Analysis of Beam Dump Experiments: Production of a New Scalar Boson
• Improved exclusion limit for light dark matter from $e^{+}{e}^{-}$ annihilation in NA64
• Systematically Testing Singlet Models for $(g-2{)}_{\mu }$
• Constraints on New Physics in the Electron g-2 from a Search for Invisible Decays of a Scalar, Pseudoscalar, Vector, and Axial Vector
• Probing Invisible Vector Meson Decays with NA64 and LDMX
• Prospects in the search for a new light $Z^{\prime }$ boson with the NA64$\mu$ experiment at the CERN SPS
• Search for a New B-L Z' Gauge Boson with the NA64 Experiment at CERN
• Gravity-Mediated Dark Matter Annihilation in the Randall-Sundrum Model
• Implication of the dark axion portal for the EDM of fermions and dark matter probing with NA64$e$, NA64$\mu$, LDMX, $\mbox{M}^3$, and BaBar
• Search for a light muon-philic $Z^{\prime }$ with the NA64-$e$ experiment at CERN
• Passage of millicharged particles in the electron beam-dump: refining constraints from SLACmQ and estimating sensitivity of NA64e
• Probing Hidden Sectors with a muon beam: Total and differential cross-sections for vector boson production in muon bremsstrahlung

Cited by in corpus (3)

• Probing some photon portals to new physics at intensity frontier experiments
• Resonant probing spin-0 and spin-2 dark matter mediators with fixed target experiments
• Muon Beam Dump Experiments probe five-dimensional nature of $U(1{)}_{L_{\mu }-L_{\tau }}$