Dark photon production via elastic proton bremsstrahlung with non-zero momentum transfer

Abstract

We explore hypothetical vector particles, dark photons ${\gamma }^{\prime }$, which mix with the Standard Model photons and thus mediate interactions with charged particles into the hidden sector. We study the elastic proton bremsstrahlung of dark photons with masses 0.4-1.8 GeV, relevant for direct searches with proton accelerators. A key feature of our calculation is that it explicitly considers the non-zero momentum transfer between protons in the process $pp\to pp{\gamma }^{\prime }$. We compare the obtained differential and full bremsstrahlung cross sections with the results of other authors. Our calculation agrees well (up to 3-9 % corrections) with the Weizsacker-Williams approximation that confirms its applicability for proton beams. Then we refine predictions for the dark photon production with proton beams of energy 30 GeV, 70 GeV, 120 GeV and 400 GeV relevant for past, present and future experiments considered in literature.

arXiv comment25 pages, 7 figures, 1 table, accepted for publication in JHEP. There were added appendix B with the estimate of SHiP experiment sensitivity to dark photons and several comments on comparison with other results in section 4

References in corpus (24)

• Total cross sections
• New Fixed-Target Experiments to Search for Dark Gauge Forces
• New Limits on Hidden Photons from Past Electron Beam Dumps
• New Exclusion Limits on Dark Gauge Forces from Proton Bremsstrahlung in Beam-Dump Data
• Search for $A^{\prime }\to {\mu }^{+}{\mu }^{-}$ decays
• Constraints on sub-GeV hidden sector gauge bosons from a search for heavy neutrino decays
• Photon- and meson-induced reactions on the nucleon
• Light dark matter in neutrino beams: production modelling and scattering signatures at MiniBooNE, T2K and SHiP
• The Search for Feebly-Interacting Particles
• Search for vector mediator of Dark Matter production in invisible decay mode
• Dark matters on the scale of galaxies
• Validity of the Weizsäcker-Williams Approximation and the Analysis of Beam Dump Experiments: Production of an axion, a dark photon, or a new axial-vector boson
• Stringent limits on the π^0 -> γX, X -> e+e- decay from neutrino experiments and constraints on new light gauge bosons
• Searching in the dark: the hunt for the dark photon
• A Model for Soft High-Energy Scattering: Tensor Pomeron and Vector Odderon
• Probing Particle Physics with IceCube
• Helicity in Proton-Proton Elastic Scattering and the Spin Structure of the Pomeron
• Searching for Physics Beyond the Standard Model in an Off-Axis DUNE Near Detector
• Dark Sector Production via Proton Bremsstrahlung
• Decaying light particles in the SHiP experiment: Signal rate estimates for hidden photons
• Once more on electromagnetic form factors of nucleons in extended vector meson dominance model
• The Tensor Pomeron and Low-x Deep Inelastic Scattering
• Central exclusive diffractive production of a single photon in high-energy proton-proton collisions within the tensor-Pomeron approach
• Elastic proton-neutron and antiproton-neutron scattering in holographic QCD

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• Dark photon emission in elastic proton bremsstrahlung
• Data-Driven Predictions for Dark Photon and Millicharged Particle Production
• Muon Beam Dump Experiments probe five-dimensional nature of $U(1{)}_{L_{\mu }-L_{\tau }}$