Improved exclusion limit for light dark matter from e+e- annihilation in NA64
Date Issued
2021-11
Author(s) USM
Lyubovitskij, V.E.
Rojas, R.
Vasquez Arenas, G.
DOI
10.1103/PhysRevD.104.L091701
Abstract
The current most stringent constraints for the existence of sub-GeV dark matter coupling to Standard Model via a massive vector boson A were set by the NA64 experiment for the mass region m(A) less than or similar to 250 MeV, by analyzing data from the in
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