https://doi.org/10.1140/epjc/s10052-023-11603-x
Regular Article - Theoretical Physics
Search for dark sector by repurposing the UVX Brazilian synchrotron
1
International Institute of Physics, Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, 59078-970, Natal, RN, Brazil
2
Laboratório Nacional de Luz Síncrotron-LNLS, Caixa Postal 6192, CEP 13084-971, Campinas, Brazil
3
Max Planck Institut fur Kernphysik, Saupfercheckweg 1, 69117, Heidelberg, Germany
4
Faculty of Physics, Sofia University, 5 J. Bourchier Blvd., 1164, Sofia, Bulgaria
5
INFN-LNF, Via E. Fermi 54, 00044, Frascati, Italy
6
Millennium Institute for Subatomic Physics at High-Energy Frontier (SAPHIR), Fernandez Concha 700, Santiago, Chile
7
Facultad de Ciencias Exactas, Center for Theoretical and Experimental Particle Physics, Universidad Andres Bello, Fernandez Concha 700, Santiago, Chile
8
Departamento de Física, Universidade Federal do Rio Grande do Norte, 59078-970, Natal, RN, Brazil
Received:
25
December
2022
Accepted:
10
May
2023
Published online:
17
June
2023
We propose the first Search for Dark Sector at the Brazilian Synchrotron Light Laboratory, site of Sirius, a fourth-generation storage ring. We show that UVX, Sirius predecessor, can be a promising dark sector detector, SeDS, with unprecedented sensitivity. The search is based on a GeV positron beam impinging on a thick target leading the
reaction, followed by a missing mass spectrum event reconstruction. We show that SeDS has the potential to probe dark photons with masses up to 55 MeV and kinetic coupling down to
. Therefore, such experiment would constitute the best dark photon probe worldwide in the
MeV mass range, being able to probe an unexplored region of parameter space.
© The Author(s) 2023
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