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SUMMARY:Toponium at the LHC: a new frontier in top-quark physics (Benjamin
  Fuks [LPTHE] et Baptiste Ravina [CERN])
DTSTART:20251124T130000Z
DTEND:20251124T150000Z
DTSTAMP:20260911T172000Z
UID:indico-event-37626@indico.in2p3.fr
DESCRIPTION:Speakers: Baptiste Ravina\, Benjamin Fuks (LPTHE Paris / Sorbo
 nne Université)\n\nThe top quark\, the heaviest known elementary particle
 \, has long been thought unable to form bound states. However\, intriguing
  hints in recent LHC data suggest that toponium\, a short-lived quasi-boun
 d state of a top-antitop pair\, might have left observable traces in data 
 and possibly even been discovered. In this seminar\, we will discuss why t
 oponium is a unique laboratory for studying the theory of the strong inter
 action in the non-relativistic regime and how modern theoretical technique
 s allow bound-state effects to be incorporated into state-of-the-art colli
 der simulations. We will then review experimental signatures that could re
 veal the presence of toponium in current and future LHC data and finally\,
  highlight recent ATLAS measurements showing an excess of events near thre
 shold consistent with toponium formation\, compare them with CMS results a
 nd theoretical expectations\, and outline prospects for further investigat
 ion. Together\, this will offer a comprehensive overview of the current st
 atus and future directions for using toponium as a new window into the phy
 sics of the top quark.\n\nhttps://indico.in2p3.fr/event/37626/
LOCATION:salle des conseils
URL:https://indico.in2p3.fr/event/37626/
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