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Massless Gauge Bosons other than the Photon
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Gauge bosons associated with unbroken gauge symmetries, under which all standard model fields are singlets, may interact with ordinary matter via higher-dimensional operators. A complete set of dimension-six operators involving a massless U(1) field, gamma-prime, and standard model fields is presented. The mu to e gamma-prime decay, primordial nucleosynthesis, star cooling and other phenomena set lower limits on the scale of chirality-flip operators in the 1 - 15 TeV range, if the operators have coefficients given by the corresponding Yukawa couplings. Simple renormalizable models induce gamma-prime interactions with leptons or quarks at two loops, and may provide a cold dark matter candidate.
Forward citations
Cited by 9 Pith papers
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Stellar Superradiance and Low-Energy Absorption in Dense Nuclear Media
Collective nucleon scattering in neutron-star matter suppresses the effective absorption of ultralight bosons at the long wavelengths relevant for superradiance, weakening the link between stellar cooling bounds and s...
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Freeze-in Production of Non-Abelian Millicharged Vector Dark Matter
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The String Theory Photoverse
Massless string-theory hidden photons acquire dimension-six dipole couplings to SM fermions with suppression scale Λ = αM_s, converting dipole measurements into constraints on the string scale.
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Potential of constraining the Fifth Force Using the Earth as a Spin and Mass Source from space
Theoretical proposal for a spacecraft-Earth experiment to constrain spin- and velocity-dependent fifth forces mediated by ultralight vector bosons, claiming up to three orders of magnitude improvement over current bounds.
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Constraining Multiple Kinetically Mixed Dark Photons
Develops a statistical framework to constrain multiple kinetically mixed dark photons using standard experimental probes and distributions for mixing parameters.
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Branching ratios and CP violations of $B \to\rho (\omega) \gamma$ decays in the modified perturbative QCD approach and the relevant dark photonic decays of $B\to \rho (\omega) \gamma^\prime $
Modified pQCD with transverse momenta and Sudakov suppression yields form factors for B→ρ(ω)γ that match LCSR after fitting soft components to data, then bounds B→ρ(ω)γ' branching ratios for a dark photon.
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The Dark Photon
The paper surveys theoretical motivations, experimental searches, and bounds on the dark photon as a kinetically mixed gauge boson from a dark sector, covering both massive and massless cases along with related milli-...
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Dark sector search at BESIII
This proceedings article restates four already-published BESIII dark sector searches, all of which found no signal and produced new upper limits.
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