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DTSTART:20240331T010000
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DTSTART;TZID=Europe/Rome:20241016T143000
DTEND;TZID=Europe/Rome:20241016T163000
DTSTAMP:20260421T034237
CREATED:20240923T085008Z
LAST-MODIFIED:20240923T085008Z
UID:38467-1729089000-1729096200@w3.lnf.infn.it
SUMMARY:Atoms as electron accelerators: leveraging atomic electron momentum distribution in fixed target experiments
DESCRIPTION:Speaker: Giovanni Grilli di Cortona (Istituto Nazionale di Fisica Nucleare) \nResonant positron annihilation on atomic electrons is a powerful technique for searching for light dark matter particles that couple to e+e-. Accurate estimates of production rates necessitate a detailed characterization of atomic electron momentum distributions. I will present a general method that uses the Compton profile of the target material to accurately account for electron velocity effects in resonant annihilation cross-sections. Additionally\, I will discuss the implications of this precise computation for new physics searches and how high Z atoms can effectively serve as electron accelerators\, thereby extending the experimental mass reach. Finally\, I will demonstrate that leveraging the relativistic velocities of electrons in the inner atomic shells\, a high-intensity 12 GeV positron beam — such as the one planned at JLab — can allow to measure the hadronic cross section with high statistical accuracy. This seminar is based on Phys.Rev.Lett. 132 (2024) 26\, 261801 and hep-ph/2407.15941. \nEntra Zoom Riunione\nhttps://infn-it.zoom.us/j/98373797903?pwd=ByIdssvPnoY0HWm5hndgibLNeqJNbP.1 \nID riunione: 983 7379 7903\nCodice d’accesso: 278777
URL:https://w3.lnf.infn.it/event/atoms-as-electron-accelerators-leveraging-atomic-electron-momentum-distribution-in-fixed-target-experiments/?lang=en
LOCATION:Aula Salvini
CATEGORIES:Seminari generali
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