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DTSTAMP:20260416T202340
DTSTART:20130121T140000
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URL:https://murmitoyen.com/events/vanille/udem/detail/174752
LOCATION:Université de Montréal - Pavillon Claire-McNicoll\, 2900\, chemi
 n de la Tour\, Montréal\, QC\, Canada\, H3T 1J6
SUMMARY:Studies in the same sign dilepton channel of the BSM top - Léa Gau
 thier
DESCRIPTION:Léa Gauthier\, Université de MontréalRésumé/abstract:The s
 ame sign dilepton channel is a good probe for BSM physics at LHC due to it
 s very low background in the SM and this final state is expected in a wide
  variety of new physics models: Composite Higgs Model\, Randall-Sundrum\, 
 SUSY\, … This final state is used here to analyse different exotic model
 s. The exotic partners of the top as T5/3 (decay to tW) and 4-top events p
 resented here are the most spectacular final states of models with Higgs a
 nd top composite and their final state are quite similar.  Two analyses ar
 e presented here :  - a theoretical analysis with 4 tops in the final sta
 te : four-top production is a spectacular final state and a sensitive prob
 e of new physics. Examples are models where the top quark is partially com
 posite or where a new heavy particle couples strongly or exclusively to to
 p quarks.  - an experimental analysis with an extradimensional model whic
 h includes top partner particles as well as four-top production. This anal
 ysis includes the first ATLAS results: a limit on the four-top production 
 cross-section and a limit on the composite model when both pair and single
  production of the top partner are taken into account.Cette conférence es
 t présentée par le Groupe de Physique des Particules du Département de
  physique de l'Université de Montréal.
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