BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:Search for Dark Matter Produced in Association with a Dark Sector 
 Higgs Boson in Proton-Proton Collisions with the ATLAS Detector
DTSTART;VALUE=DATE-TIME:20210209T211500Z
DTEND;VALUE=DATE-TIME:20210209T213000Z
DTSTAMP;VALUE=DATE-TIME:20260907T030503Z
UID:indico-contribution-1735@nyx.physics.mcgill.ca
DESCRIPTION:Speakers: Danika MacDonell (University of Victoria )\nLongstan
 ding evidence from observational astronomy indicates that non-luminous "da
 rk matter" constitutes the majority of all matter in the universe\, yet th
 is mysterious form of matter continues to elude experimental detection. Th
 e study presented in this talk is part of an ongoing programme to search f
 or dark matter production in high-energy proton-proton collisions at the L
 arge Hadron Collider (LHC) at CERN. This search targets a model in which d
 ark matter is produced in association with the emission of a hypothesized 
 heavy Higgs boson in the dark sector\, which then decays to a pair of W bo
 sons. The final-state signature of this model would be an excess of missin
 g transverse energy in the detector due to undetected dark matter producti
 on\, along with two reconstructed W bosons.  A search was recently perform
 ed targeting this final state in the 'hadronic' decay channel\, wherein bo
 th W bosons decay to a pair of quarks. The semi-leptonic WW decay channel\
 , in which one of the bosons instead decays to a lepton and neutrino\, is 
 expected to complement and extend the reach of the existing search in the 
 hadronic channel. Ongoing work towards developing a dark matter search in 
 this semi-leptonic WW decay channel is presented.\n\nhttps://nyx.physics.m
 cgill.ca/event/253/contributions/1735/
LOCATION:Virtual Meeting
URL:https://nyx.physics.mcgill.ca/event/253/contributions/1735/
END:VEVENT
END:VCALENDAR