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Particle physics applications of the AWAKE acceleration scheme
A. Caldwell, J. Chappell, P. Crivelli +11
The AWAKE experiment had a very successful Run 1 (2016-8), demonstrating proton-driven plasma wakefield acceleration for the first time, through the observation of the modulation o…
Light hidden photon production in high energy collisions
S. Demidov, S. Gninenko, D. Gorbunov
The visible and dark sectors of particle physics can be connected via kinetic mixing between ordinary and hidden photons. If the latter is light its production in high energy colli…
Probing millicharged particles with NA64 experiment at CERN
S. N. Gninenko, D. V. Kirpichnikov, N. V. Krasnikov
In this note we estimate the sensitivity of the NA64 experiment to millicharged particles (). That experimental facility is dedicated to the searching for dark sector particles…
Improved Search for Solar Chameleons with a GridPix Detector at CAST
V. Anastassopoulos, S. Aune, K. Barth +66
We report on a new search for solar chameleons with the CERN Axion Solar Telescope (CAST). A GridPix detector was used to search for soft X-ray photons in the energy range from 200…
Deep inelastic and conversion in the NA64 experiment at the CERN SPS
Sergei Gninenko, Sergey Kovalenko, Serguei Kuleshov +2
We study the Lepton Flavor Violating (LFV) conversion in Deep Inelastic Scattering (DIS) of electron (muon) on fixed-target nuclei. Our model-independent analysis is based…
Search for a Hypothetical 16.7 MeV Gauge Boson and Dark Photons in the NA64 Experiment at CERN
D. Banerjee, V. E. Burtsev, A. G. Chumakov +45
We report the first results on a direct search for a new 16.7 MeV boson (X) which could explain the anomalous excess of e+e- pairs observed in the excited Be-8 nucleus decays. Due…