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SUMMARY:[NT/RBRC seminar] Reframing azimuthal modulations in hard exclusiv
 e diffraction processes
DTSTART:20250509T150000Z
DTEND:20250509T170000Z
DTSTAMP:20260718T145500Z
UID:indico-event-27315@indico.bnl.gov
DESCRIPTION:Speakers: Zhite Yu (Jefferson Laboratory)\n\nI will present a 
 new formulation of azimuthal modulations in hard exclusive diffraction pro
 cesses. These modulations are crucial for the phenomenological extraction 
 and separation of various generalized parton distributions (GPDs). A key e
 xample is deeply virtual Compton scattering (DVCS)\, which will play an im
 portant role at the Electron-Ion Collider. Conventionally\, GPDs are extra
 cted from the angular modulations of DVCS in the Breit frame. However\, th
 e Bethe-Heitler (BH) subprocess interferes with DVCS\, contaminating its a
 zimuthal modulations and making it difficult to extract GPDs cleanly. We i
 ntroduce a new formalism with an optimized choice of frame to describe azi
 muthal distributions. We demonstrate that this approach is more suitable f
 or experimental analyses\, as it allows for a consistent and uniform separ
 ation of contributions to the physical cross section from GPD-sensitive su
 bprocesses (such as DVCS) and GPD-insensitive subprocesses (e.g.\, BH).\n\
 nhttps://indico.bnl.gov/event/27315/
LOCATION:CFNS library (https://bnl.zoomgov.com/j/1614715193?pwd=WkwxODVWdz
 Zzb29zQnZRVGp3VTBDQT09)
URL:https://indico.bnl.gov/event/27315/
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