PoS - Proceedings of Science
Volume 397 - The Ninth Annual Conference on Large Hadron Collider Physics (LHCP2021) - Poster Session
Search for Dark Matter produced in association with a Higgs boson decaying to $b$-quarks using the ATLAS detector
J.V. Ahnen*  on behalf of the ATLAS Collaboration
Full text: pdf
Pre-published on: October 20, 2021
Published on: November 17, 2021
Many extensions of the Standard Model predict the production of Dark Matter particles in association with Higgs bosons. This search examines the final state of missing transverse momentum accompanied by a $b\bar{b}$ pair originating from a Higgs boson decay. For this purpose, proton-proton collision data are used, which is produced at 13 TeV center-of-mass energy and recorded by the ATLAS experiment at the LHC, amounting to an integrated luminosity of $139\, \mathrm{fb}^{-1}$. The increase in integrated luminosity in conjunction with several analysis optimizations result in a better sensitivity in comparison to previous iterations of the analysis. No significant deviation from the Standard Model is observed and the results are interpreted in the context of the Two-Higgs-Doublet models extended with an additional vector or pseudoscalar mediator.
DOI: https://doi.org/10.22323/1.397.0255
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