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SUMMARY:HEP Colloquia 2026
DTSTART:20260709T123000Z
DTEND:20260709T133000Z
DTSTAMP:20261115T002100Z
UID:indico-event-52830@agenda.infn.it
CONTACT:hepcolloquia@ca.infn.it
DESCRIPTION:Speakers: Daniele Marangotto\n\nThe charm of baryon polarisati
 on\n\nCharm baryon polarisation is a special probe in particle physics\, g
 iving a preferential access to heavy-quark spin-dependent physics. Polaris
 ation measurements for baryons produced in different interactions can prov
 ide insights for both Beyond-the-Standard Model physics searches and on no
 nperturbative QCD dynamics.\nLimited studies have been done until recently
 \, though\, due to the absence of large charm baryon datasets and effectiv
 e polarisation extraction techniques.\nIn this talk\, I will present the r
 ecent studies on charm baryon polarisation\, including the development of 
 polarisation measurement techniques\, I performed working for the SELDOM E
 RC project.\nThe first part will cover the polarisation and amplitude anal
 yses done on proton-proton and proton-gas collisions recorded by the LHCb 
 experiment. They represent the first charm polarisation measurements from 
 weak interaction production\, potentially interesting for Beyond-the-Stand
 ard Model physics\, and the first measurement of separate-charge Λc polar
 isation in fixed-target proton-gas collisions\, useful for studying strong
  interaction polarising mechanisms.\nThe second part will focus on the pol
 arisation measurement technique developed for charm baryons. This is based
  on amplitude models written in the helicity formalism determined from amp
 litude analyses\, which permit to exploit both the high-statistics and the
  complex dynamics of three-body baryon decays to enhance polarisation sens
 itivity.\n \n\n \n\nhttps://agenda.infn.it/event/52830/
LOCATION:Sala Consiliare (Department of Physics)
URL:https://agenda.infn.it/event/52830/
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