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Concept of Very-Asymmetric lepton Collider for dark matter search
Accelerator-based searches for dark matter are aiming for high sensitivity and need an experimental setup with high luminosity. This field of research is often called intensity frontier physics. One of the best motivated portals of interaction between dark matter and ordinary matter is a dark photon which could be observed as a resonance in the invariant mass of the decay products. Electron–positron collisions are known to be the cleanest interaction for such a study. In this paper we propose a scheme for a collider which allows for a luminosity of a few orders of magnitude higher than could be obtained in a conventional symmetric collider and with a few times higher accessible mass than is possible using a positron beam and a fixed target approach. The key concept is based on asymmetric energies: a high-energy circulating positron beam and a low-energy high-intensity electron beam, and optimization of the beam interaction region. We present here a configuration of a collision region of 10 MeV electron and 4 GeV positron beams.
Scattering Rates For Leptogenesis: Damping of Lepton Flavour Coherence and Production of Singlet Neutrinos
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Alternative [SU(3)]4 model of leptonic color and dark matter
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Search for pair production of heavy top-like quarks decaying to a high-p(T) W boson and a b quark in the lepton plus jets final state at root s=7 TeV with the ATLAS detector
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Measurement of the t t ¯ production cross section in pp collisions at s = 8 TeV in dilepton final states containing one τ lepton
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Search for new resonances decaying via WZ to leptons in proton–proton collisions at s = 8 TeV
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Measurement of the pp → ZZ production cross section and constraints on anomalous triple gauge couplings in four-lepton final states at s = 8 TeV
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Search for W ′ → t b ¯ in the lepton plus jets final state in proton–proton collisions at a centre-of-mass energy of s = 8 TeV with the ATLAS detector
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Measurements of four-lepton production in pp collisions at s = 8 TeV with the ATLAS detector
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Search for W′ decaying to tau lepton and neutrino in proton–proton collisions at s = 8 TeV
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New U(1) gauge model of radiative lepton masses with sterile neutrino and dark matter
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Search for supersymmetry in events with a photon, a lepton, and missing transverse momentum in pp collisions at s = 8 TeV
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