@article{b70bd363af424d05993d8fe9b6a0d6e1,
title = "Search for Light Dark Matter with NA64 at CERN",
abstract = "Thermal dark matter models with particle χ masses below the electroweak scale can provide an explanation for the observed relic dark matter density. This would imply the existence of a new feeble interaction between the dark and ordinary matter. We report on a new search for the sub-GeV χ production through the interaction mediated by a new vector boson, called the dark photon A′, in collisions of 100 GeV electrons with the active target of the NA64 experiment at the CERN SPS. With 9.37×1011 electrons on target collected during 2016-2022 runs NA64 probes for the first time the well-motivated region of parameter space of benchmark thermal scalar and fermionic dark matter models. No evidence for dark matter production has been found. This allows us to set the most sensitive limits on the A′ couplings to photons for masses mA′≲0.35 GeV, and to exclude scalar and Majorana dark matter with the χ-A′ coupling αD≤0.1 for masses 0.001≲mχ≲0.1 GeV and 3mχ≤mA′.",
author = "{NA64 Collaboration} and Andreev, {Yu M.} and D. Banerjee and {Banto Oberhauser}, B. and J. Bernhard and P. Bisio and A. Celentano and N. Charitonidis and Chumakov, {A. G.} and D. Cooke and P. Crivelli and E. Depero and Dermenev, {A. V.} and Donskov, {S. V.} and Dusaev, {R. R.} and T. Enik and Frolov, {V. N.} and {Galleguillos Silva}, {R. B.} and A. Gardikiotis and Gertsenberger, {S. V.} and S. Girod and Gninenko, {S. N.} and M. H{\"o}sgen and Kachanov, {V. A.} and Y. Kambar and Karneyeu, {A. E.} and Kasianova, {E. A.} and Kekelidze, {G. D.} and B. Ketzer and Kirpichnikov, {D. V.} and Kirsanov, {M. M.} and Kolosov, {V. N.} and Kramarenko, {V. A.} and Kravchuk, {L. V.} and Krasnikov, {N. V.} and Kuleshov, {S. V.} and Lyubovitskij, {V. E.} and V. Lysan and A. Marini and L. Marsicano and Matveev, {V. A.} and {Mena Fredes}, R. and {Mena Yanssen}, {R. G.} and {Molina Bueno}, L. and M. Mongillo and Peshekhonov, {D. V.} and Polyakov, {V. A.} and B. Radics and Salamatin, {K. M.} and Samoylenko, {V. D.} and H. Sieber",
note = "Publisher Copyright: {\textcopyright} 2023 authors. Published by the American Physical Society.",
year = "2023",
month = oct,
day = "20",
doi = "10.1103/PhysRevLett.131.161801",
language = "Ingl{\'e}s",
volume = "131",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "16",
}