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SUMMARY:Search strategies for pair production of heavy Higgs bosons decayi
 ng invisibly at the LHC
DTSTART;VALUE=DATE-TIME:20171110T110000Z
DTEND;VALUE=DATE-TIME:20171110T120000Z
DTSTAMP;VALUE=DATE-TIME:20260504T143054Z
UID:indico-event-3140@indico.ific.uv.es
DESCRIPTION:\n    The search for heavy Higgs bosons at the LHC represents 
 an intense experimental program\, carried out by the ATLAS and CMS collabo
 rations\, which includes the hunt for invisible Higgs decays and dark matt
 er candidates. No significant deviations from the SM backgrounds have been
  observed in any of these searches\, imposing significant constraints on t
 he parameter space of different new physics models with an extended Higgs 
 sector. Here we discuss an alternative search strategy for heavy Higgs bos
 ons decaying invisibly at the LHC\, focusing on the pair production of a h
 eavy scalar H together with a pseudoscalar A\, through the production mode
  qq → Z∗ → HA. We identify as the most promising signal the final st
 ate made up of 4b + ETmiss\, coming from the heavy scalar decay mode H →
  hh → bbbb\, with h being the discovered SM-like Higgs boson with mh = 1
 25 GeV\, together with the invisible channel of the pseudoscalar. We work 
 within the context of simplified MSSM scenarios that contain quite heavy s
 fermions of most types with O(10) TeV masses\, while the stops are heavy e
 nough to reproduce the 125 GeV mass for the lightest SM-like Higgs boson. 
 By contrast\, the gauginos/higgsinos and the heavy MSSM Higgs bosons have 
 masses near the EW scale. Our search strategies\, for a LHC center-of-mass
  energy of √s = 14 TeV\, allow us to obtain statistical significances of
  the signal over the SM backgrounds with values up to ∼ 1.6σ and ∼ 3
 σ\, for total integrated luminosities of 300 fb−1 and 1000 fb−1\, res
 pectively.\n\nhttps://indico.ific.uv.es/event/3140/
LOCATION:Campus Burjassot 4-4-4426 - Seminari Física Teòrica
URL:https://indico.ific.uv.es/event/3140/
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