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SUMMARY:Some recent developments in the area of jet substructure
DTSTART;VALUE=DATE-TIME:20181204T154000Z
DTEND;VALUE=DATE-TIME:20181204T160000Z
DTSTAMP;VALUE=DATE-TIME:20260521T105527Z
UID:indico-contribution-252-1173@indico.tlabs.ac.za
DESCRIPTION:Speakers: Deepak Kar (University of Witwatersrand)\nWe first r
 eport on the detailed study of performance against robustness of two-prong
  substructure taggers\, performed as a part of Les Houches  2017 Standard 
 Model Working group report (arXiv:1803.07977 [hep-ph]). Then recent result
 s on detector level smearing for jet substructure observables will be disc
 ussed\, where we point out the shortcomings of the usual Delphes based app
 roach\, and suggest improvements.\n\nhttps://indico.tlabs.ac.za/event/75/c
 ontributions/1173/
LOCATION:Casa do Sol
URL:https://indico.tlabs.ac.za/event/75/contributions/1173/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Search for chargino-neutralino pairs at LHC using MT2-MAOS reconst
 ruction
DTSTART;VALUE=DATE-TIME:20181204T150000Z
DTEND;VALUE=DATE-TIME:20181204T152000Z
DTSTAMP;VALUE=DATE-TIME:20260521T105527Z
UID:indico-contribution-252-1204@indico.tlabs.ac.za
DESCRIPTION:Speakers: Steve Muanza (CPPM Marseille\, CNRS-IN2P3 &amp\; Aix
 -Marseille University)\nSeveral studies based upon the MT2-MAOS method [1]
  have shown the possibility of reconstructing the momenta of invisible par
 ticles in events produced at hadron colliders. This has opened an avenue t
 o extract more informations about signals which are studied or searched fo
 r in events topologies having some missing transverse momentum (mET).\n We
  present preliminary results of a realistic application of such a method i
 n a simulated search for chargino-neutralino pairs decaying to W(->lnu)+h(
 ->bb)+mET at the LHC Run 2.\n In particular\, we include the impact of the
  sub-detector finite resolutions\, of the pile-up\, and of the background 
 surviving the event selection\, on the reconstruction of the signal kinema
 tics. We compare these preliminary results with those from the standard an
 alysis techniques currently employed by the ATLAS and CMS for this search 
 channel.\n\n[1] arXiv:0810.4853v3\, arXiv:0908.0079\, arXiv:0909.4853 [hep
 -ph]\n\nhttps://indico.tlabs.ac.za/event/75/contributions/1204/
LOCATION:Casa do Sol
URL:https://indico.tlabs.ac.za/event/75/contributions/1204/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Stealth SUSY search with a large-radius jet containing a photon
DTSTART;VALUE=DATE-TIME:20181204T152000Z
DTEND;VALUE=DATE-TIME:20181204T154000Z
DTSTAMP;VALUE=DATE-TIME:20260521T105527Z
UID:indico-contribution-252-1167@indico.tlabs.ac.za
DESCRIPTION:Speakers: Marvin Flores (University of the Witwatersrand)\nThe
  LHC has collected data for more than eight years\, but no clear signal fo
 r new physics has emerged so far. This is surprising because there is over
 whelming evidence that the Standard Model must be extended. One such exten
 sion is SUSY. Here\, new scalar and fermions at the TeV scale are predicte
 d but the null results at the LHC have ruled out large region of its param
 eter space. However\, many searches assume that large missing transverse e
 nergy is present in the signal. In the so-called stealth SUSY scenarios\, 
 new light almost degenerate fermion/boson pairs with weak scale supersymme
 tric masses are introduced which result in significantly reduced missing t
 ransverse energy. In this talk we want to investigate the discovery potent
 ial of such stealth SUSY models at the LHC. We reconstruct the decay produ
 cts by using a large-radius jet containing a high transverse momentum phot
 on\, which has not been used in experiments so far. Requirements on the ev
 ent topology\, and use of substructure variables result in orders of less 
 background than signal.\n\nhttps://indico.tlabs.ac.za/event/75/contributio
 ns/1167/
LOCATION:Casa do Sol
URL:https://indico.tlabs.ac.za/event/75/contributions/1167/
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