https://doi.org/10.1140/epjc/s10052-024-13269-5
Regular Article - Theoretical Physics
Search for radiating from the dark matter at the LHC
1
Theoretical High Energy Physics Research Division, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jl. Ganesha no.10, 40132, Bandung, Indonesia
2
Center for Theoretical Physics, Department of Physics, Parahyangan Catholic University, Jalan Ciumbuleuit 94, 40141, Bandung, Indonesia
3
Department of Physics, Faculty of Sciences and Mathematics, Universitas Diponegoro, Jl. Prof. Dr. Sudarto No.13, 50275, Semarang, Indonesia
4
School of Physics and Center of Excellence in High Energy Physics and Astrophysics, Suranaree University of Technology, 30000, Nakhon Ratchasima, Thailand
Received:
1
May
2024
Accepted:
19
August
2024
Published online:
10
September
2024
We discuss a collider probe of a dark sector model in which the dark matter is charged under a new, hidden U(1) gauge group. In particular, we look for the so-called Darkstrahlung process, in which the final states dark matter radiates a new gauge boson and it manifests as dilepton resonances. This work emphasizes the potential of dilepton final states with missing transverse energy in probing the darkstrahlung process. We recast the ATLAS Run 2 search for dilepton resonances in association with missing energy in addition to the ATLAS and CMS searches for sleptons. We find that the recasted searches put strong constraints on the coupling between the dark matter and the . Moreover, we evaluate refined search strategies for production and propose an analysis employing constraints on the lepton invariant mass and higher missing energy cut related to the darkstrahlung process. Simulation outcomes indicate substantial enhancements, particularly by a factor of 6 in regions featuring lower masses. Finally, we also discuss the case when the has a long lifetime, resulting in displaced decay of the boson.
© The Author(s) 2024
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