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SUMMARY:Diffractive TMDs and D meson production in UPCs in the CGC formali
 sm
DTSTART:20261118T100000Z
DTEND:20261118T110000Z
DTSTAMP:20261104T074700Z
UID:indico-event-14513@indico.ijclab.in2p3.fr
DESCRIPTION:Speakers: Patricia Gimeno-Estivill (University of Jyväskylä)
 \n\nUsing the Color Glass Condensate effective theory\, we study the diffr
 active production of a massive quark-antiquark pair accompanied by a gluon
  in coherent photon-nucleus collisions at high energy. This partonic confi
 guration provides the leading twist contribution to the cross section in t
 he correlation limit where two of the partons are hard and nearly back to 
 back in the transverse plane\, while the third one is semi-hard\, with a t
 ransverse momentum of the order of the nuclear saturation momentum. We con
 sider two scenarios: (i) a hard quark-antiquark pair together with a semi-
 hard gluon\; in this case we demonstrate transverse momentum dependent (TM
 D) factorisation with a mass-dependent "hard" factor and the standard expr
 ession for the gluon diffractive TMD\, and (ii) a hard antiquark-gluon pai
 r and a semi-hard quark\; in this case we find TMD factorisation with a ma
 ss-independent "hard" factor and a mass-dependent quark diffractive TMD\, 
 which represents a new result.  Additionally\, based on these results we 
 present a preliminary phenomenological study of diffractive D0 meson produ
 ction in UPCs at LHC. \n\nhttps://indico.ijclab.in2p3.fr/event/14513/
LOCATION:100/2-A201 - Salle A201 (IJCLab)
URL:https://indico.ijclab.in2p3.fr/event/14513/
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