Recent Progress in Search for Dark Sector Signatures

Abstract

Many difficulties are encountered when attempting to pinpoint a common origin for several observed astrophysical anomalies, and when assessing their tension with existing exclusion limits. These include systematic uncertainties affecting the operation of the detectors, our knowledge of their response, astrophysical uncertainties, and the broad range of particle couplings that can mediate interaction with a detector target. Particularly interesting astrophysical evidence has motivated a search for dark-photon, and focused our attention on a Hidden Valleys model with a GeV-scale dark sector that produces exciting signatures. Results from recent underground experiments are also considered. There is a `light' hidden sector (dark sector), present in many models of new physics beyond the Standard Model, which contains a colorful spectrum of new particles. Recently, it has been shown that this spectrum can give rise to unique signatures at colliders when the mass scale in the hidden sector is well below a TeV; as in Hidden Valleys, Stueckelberg extensions, and Unparticle models. These physics models produce unique signatures of collimated leptons at high energies. By studying these ephemeral particles we hope to trace the history of the Universe. Our present theories lead us to believe that there is something new just around the corner, which should be accessible at the energies made available by modern colliders.

18 pages, 4 figures, Proceedings of the Second International Symposium on Physics of Photons (ISPP 15), Lanzhou, China, July 16-18, 2015

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Cited by in corpus (14)

• Mono-chromatic single photon events at the muon collider
• Dark-sector physics in the search for the rare decays $K^{+}\to {\pi }^{+}\bar{\nu }\nu$ and $K_L\to {\pi }^0\bar{\nu }\nu$
• Is the $W$-boson mass enhanced by the axion-like particle, dark photon, or chameleon dark energy?
• Phenomenological consequences of an interacting multicomponent dark sector
• Search for dark photons from Higgs boson decays via $ZH$ production with a photon plus missing transverse momentum signature from $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
• Dirac and non-Dirac conditions in the 2-potential theory of magnetic charge
• Mono-$\gamma$ Production of a Vector Dark Matter at Future $e^{+}{e}^{-}$ Collider
• String (gravi)photons, "dark brane photons", holography and the hypercharge portal
• Exploring Four Fermion Contact Couplings of a Dark Fermion and an Electron at Hadron Colliders and Direct Detection Experiments
• Particle dispersion in the classical vector dark matter background
• Constraining Gluonic Contact Interaction of a Neutrino-philic Dark Fermion at Hadron Colliders and Direct Detection Experiments
• Searching for the dark sector in two-body anti-muon decay with the polarization of monochromatic positrons
• Vector dark matter production during inflation in the gradient-expansion formalism
• Dark photon searches via Higgs boson production at the LHC and beyond