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SUMMARY:Three-baryon femtoscopy as an effective 3→3 scattering experimen
 t at ALICE
DTSTART:20260922T090000Z
DTEND:20260922T100000Z
DTSTAMP:20261028T104000Z
UID:indico-event-1730058@indico.cern.ch
CONTACT:ep-seminars.colloquia@cern.ch
DESCRIPTION:Speakers: Raffaele Del Grande (Czech Technical University  in 
 Prague (CZ))\n\n\nThree-body forces in nuclear physics account for effects
  that cannot be captured by pairwise interactions alone in many-body syste
 ms. These forces have traditionally been constrained through two-body scat
 tering experiments and measurements of bound-state properties. Direct expe
 rimental information on three-body dynamics in well-controlled systems of 
 three free\, unbound particles has so far been inaccessible due to the lac
 k of a suitable experimental technique\, leaving a significant part of the
  three-body continuum unexplored.\nIn this seminar\, I will present the fi
 rst femtoscopic measurement of the genuine three-proton correlation functi
 on in pp collisions at 13.6 TeV with ALICE at the LHC. This observable enc
 odes information about the final-state interactions among three protons em
 itted at femtometer-scale separations in the collision. Direct comparison 
 with state-of-the-art three-body calculations reveals sensitivity to the p
 artial-wave structure of the nuclear interaction\, establishing three-bary
 on femtoscopy as an effective scattering experiment with unbound nucleons 
 in a 3→3 process that is not feasible with any other experimental method
 . The measurement also reveals the first experimental signature of an effe
 ctive long-range attraction emerging from three-body continuum dynamics.\n
 The newly established method will make it possible to exploit the abundant
  production of hadrons at the LHC to investigate three-body interactions t
 hat are poorly constrained or entirely unknown. I will conclude with a dis
 cussion of future measurements of three-body interactions involving hypero
 ns\, which could have important implications for hypernuclear physics and 
 for the equation of state of dense matter\, including that found in neutro
 n stars.\n \n\n \nCoffee will be served at 10h30\n \n\nhttps://indico.c
 ern.ch/event/1730058/\n\nZoom: https://cern.zoom.us/j/64706807692?pwd=JU9Q
 eedV47YRm8b6IhUZGFJqpmMgav.1
LOCATION:500/1-001 - Main Auditorium (CERN)
URL:https://indico.cern.ch/event/1730058/
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