https://doi.org/10.1051/epjconf/201921206001
Searching for dark sector with missing mass technique in fixed target experiments
1
Faculty of Physics, University of Sofia, 5 J. Bourchier Blvd., BG-1164 Sofia, Bulgaria
2
Laboratori Nazionali di Frascati, IT-00044 Frascati (RM), Italy
* e-mail: venelin@phys.uni-sofia.bg
Published online: 17 June 2019
Currently, the existence of a dark sector almost completely decoupled from the Standard Model is a viable solution for numerous long-standing problems in physics, including the nature of dark matter and the muon anomalous magnetic moment. A new gauge mediator, the dark photon, could be the portal to this hidden sector. The most general probe to its existence is the missing mass technique which requires a precise knowledge of the initial state of the process but does not put constraints on the dark photon final states. The experimental approaches to the search for dark photons in positron-on-target annihilation and in mesons decay in flight are presented and the physics reach is discussed.
© The Authors, published by EDP Sciences, 2019
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