BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:Probing Non-Perturbative QCD with CERN’s North Area Secondary Be ams DTSTART:20261028T130000Z DTEND:20261028T150000Z DTSTAMP:20261101T115500Z UID:indico-event-1741628@indico.cern.ch CONTACT:johannes.bernhard@cern.ch\;Academic-Training.Office@cern.ch DESCRIPTION:Speakers: Dipanwita Banerjee (CERN)\n\nAbstract:\nMany open qu estions in particle and astroparticle physics are limited by strong-intera ction quantities that cannot yet be calculated from first principles. At l ow momentum transfer perturbative QCD no longer applies\, and predictions rely either on phenomenological models tuned to data or on lattice QCD\, w hich can so far compute only a limited set of observables. These quantitie s therefore have to be measured. This lecture discusses three experiments that do this with secondary beams in CERN’s North Area: NA61/SHINE\, AMB ER and MUonE.\nSpace-borne experiments such as AMS-02 now measure cosmic-r ay fluxes at the percent level\, and interpreting these data is limited by poorly known nuclear cross sections. At the H2 beamline\, NA61/SHINE meas ures hadron production relevant to air showers\, central to the cosmic-ray muon puzzle\, and the nuclear fragmentation cross sections needed to infe r how cosmic rays propagate through the Galaxy. At the M2 beamline\, AMBER has measured antiproton production in proton–proton and proton–helium collisions at 60–250 GeV/c\, aiming at few-percent precision. These rea ctions produce most of the secondary cosmic-ray antiprotons\, the main bac kground in dark-matter searches with cosmic antiprotons.\n \nAnother fund amental QCD question is the origin of hadron mass. The Higgs-generated mas ses account for only about 1% of the proton’s mass\; the rest emerges fr om QCD dynamics. The pion\, by contrast\, is a Nambu–Goldstone boson and would be massless without the Higgs. Yet meson structure is known mainly from Drell–Yan data of the 1980s\, with only about 700 kaon-induced Drel l–Yan events worldwide. Using the only high-intensity\, high-energy pion and kaon beam in the world\, AMBER will collect the largest meson-induced Drell–Yan and charmonium samples of this decade\, giving access to the valence\, sea and gluon content of the pion and a much-improved picture of kaon structure.\n \nWith the M2 muon beam\, AMBER will also measure the proton charge radius in elastic muon–proton scattering\, an independent test of the proton-radius puzzle. MUonE will extract the leading hadronic vacuum-polarisation contribution to the muon g−2 from μe elastic scatte ring\, a third route alongside the data-driven and lattice determinations that currently disagree\n \nFinally\, the programme through LS3 into Run 4 will be placed in the context of the Non-Collider Physics Roadmap (2027 –2046).\n \nBio: \nDipanwita Banerjee is a beam physicist in the Exper imental Areas group of CERN’s Beams Department (BE-EA). She received her PhD in physics from ETH Zurich in 2017 during which she designed and buil t Resistive Multiplexed Micromegas tracking detectors for the NA64 and GBA R experiments at CERN. She is currently responsible for the operation of t he M2 beamline in the North Area\, which serves AMBER\, NA64μ and MUonE\, and of the T9 beamline in the East Area. She chairs the Conventional Beam s EHN2 Working Group\, which coordinates studies and technical solutions f or the experiments in EHN2\, and the Experimental Areas Technical Meeting\ , which follows accelerator-wide activities that affect the Experimental A reas. Her work covers beam-optics design\, Monte Carlo simulation of beaml ines and backgrounds for the experiments as well as machine-learning metho ds for beamline tuning. She also brings her experiment\, beamline and oper ation knowledge currently working as the project lead of BRUTUS\, the futu re control system for CERN’s secondary beamlines. \n \n\nhttps://indic o.cern.ch/event/1741628/ LOCATION:500/1-001 - Main Auditorium (CERN) URL:https://indico.cern.ch/event/1741628/ END:VEVENT END:VCALENDAR