Search for dark matter in events with missing transverse momentum and a Higgs boson decaying into two photons in pp collisions at √s = 13 TeV with the ATLAS detector

Summary, in English

A search for dark-matter particles in events with large missing transverse momentum and a Higgs boson candidate decaying into two photons is reported. The search uses 139 fb−1 of proton-proton collision data collected at s = 13 TeV with the ATLAS detector at the CERN LHC between 2015 and 2018. No significant excess of events over the Standard Model predictions is observed. The results are interpreted by extracting limits on three simplified models that include either vector or pseudoscalar mediators and predict a final state with a pair of dark-matter candidates and a Higgs boson decaying into two photons.

• Author: G Aad; Torsten Åkesson; Eric Edward Corrigan; Caterina Doglioni; Jannik Geisen; Eva Brottmann Hansen; Vincent Hedberg; Göran Jarlskog; Balazs Konya; Else Lytken; Katja Mankinen; Caterina Marcon; Ulf Mjörnmark; Geoffrey André Adrien Mullier; Ruth Pöttgen; Trine Poulsen; Eleni Skorda; Oxana Smirnova; L Zwalinski
• Department/s: Particle and nuclear physics; eSSENCE: The e-Science Collaboration
• Publishing year: 2021-10-01
• Language: English
• Publication/Series: Journal of High Energy Physics
• Volume: 2021
• Issue: 10
• Links: http://dx.doi.org/10.1007/JHEP10(2021)013
• Document type: Journal article
• Publisher: Springer
• Topic: Subatomic Physics
• Keywords: Hadron-Hadron scattering (experiments)
• Status: Published
• ISBN/ISSN/Other: ISSN: 1029-8479