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SUMMARY:Elie Hammou: Tailored PDFs for new physics searches
DTSTART:20260507T090000Z
DTEND:20260507T100000Z
DTSTAMP:20260607T174900Z
UID:indico-event-3731@indico.ijs.si
DESCRIPTION:Indirect searches for new physics at the LHC increasingly rely
  on precision measurements in the high-energy tails of kinematic distribut
 ions\, where uncertainties from Parton Distribution Functions (PDFs) are o
 ften a bottleneck. In this talk\, I study the interplay between PDFs and S
 tandard Model Effective Field Theory (SMEFT) interpretations in two key LH
 C sectors: Drell–Yan and top-quark production. I compare two complement
 ary strategies for robust PDF determination for new-physics searches: (i) 
 simultaneous fits of PDFs and SMEFT Wilson coefficients\, and (ii) sequent
 ial fits based on an initial conservative PDF determination using observab
 les that can be reliably assumed to be SM-like. Both approaches are assess
 ed through controlled closure tests in a realistic High-Luminosity LHC sce
 nario. I show how different fitting strategies impact PDFs determination 
 and SMEFT constraints and propose concrete best-practice recommendations f
 or indirect new-physics searches in the Drell–Yan and top sectors at the
  LHC.\n\nhttps://indico.ijs.si/event/3731/
LOCATION:A/1-106 - Seminarska soba fizike (F5)
URL:https://indico.ijs.si/event/3731/
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