Volume 397 - The Ninth Annual Conference on Large Hadron Collider Physics (LHCP2021) - Poster Session
Constraining the Dark Sector with the Mono-jet signature with the ATLAS detector at the LHC
E. Pompa Pacchi*  on behalf of the ATLAS Collaboration
*: corresponding author
Full text: pdf
Pre-published on: October 20, 2021
Published on: November 17, 2021
Abstract
This work presents the reinterpretation of the search for final states with at least one energetic jet and missing transverse momentum in the context of dark sector models with long-lived neutral particles. Results are based on $139 \mathrm{fb} ^{-1}$ of data collected in $pp$ collisions at $\sqrt{s} = 13 \mathrm{TeV}$ by the
ATLAS experiment during Run-2 at LHC. Decays of the Standard Model Higgs boson and of a new neutral heavy scalar mediator into long-lived particles are investigated in different channels. The resulting constraints generally extend those from dedicated searches at large proper lifetimes.
DOI: https://doi.org/10.22323/1.397.0254
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