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SUMMARY:Resummation of Non-Global Logarithms - Nicolas Schalch (Oxford U.)
DTSTART:20250509T150000Z
DTEND:20250509T160000Z
UID:TALK229915@talks.cam.ac.uk
CONTACT:Nico Gubernari
DESCRIPTION:An intricate pattern of enhanced higher-order corrections know
 n as non-global logarithms arises in cross sections with angular cuts. Whi
 le the leading logarithmic terms have been calculated numerically more tha
 n two decades ago\, the resummation of subleading non-global logarithms re
 mained an open problem. In this seminar\, I will present a solution to thi
 s challenge using effective field theory techniques.\nStarting from a fact
 orization theorem\, we develop a dedicated parton shower framework in the 
 Veneziano limit where the number of colors Nc becomes large\, but the rati
 o of Nc to the number of fermion flavors nF remains fixed. We solve the as
 sociated renormalization-group equations using the Monte-Carlo framework M
 ARZILI\, thereby resumming the subleading non-global logarithms. To demons
 trate the validity of our approach\, we will show results of an ongoing co
 mparison between MARZILI\, GNOLE and PanScales.
LOCATION:Ray Dolby Centre\, Seminar Room - North (Floor: 0 A0.019)
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