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SUMMARY:Precise predictions for jet vetoed cross sections at the LHC - Mat
 thew Lim\, University of Sussex
DTSTART:20231013T150000Z
DTEND:20231013T160000Z
UID:TALK207124@talks.cam.ac.uk
CONTACT:Luca Mantani
DESCRIPTION:Vetoes on energetic jets are common in experimental analyses\,
  and are used to reject backgrounds which have similar final states to sig
 nal processes of interest. In placing a jet veto\, however\, one introduce
 s a new scale into the theoretical calculation\, which may be widely separ
 ated from the natural energy scale of the process. This induces large loga
 rithms of the scale ratio at all orders in perturbation theory\, which can
  spoil the convergence of a fixed order calculation. I will discuss the re
 summation of these logarithms in the framework of soft-collinear effective
  theory. After reviewing the treatment for colour singlet production\, I w
 ill present a new factorisation theorem for Higgs boson production in asso
 ciation with a hard jet and show resummed results up to an approximate NNL
 L' accuracy. I will then discuss how resummed calculations of this kind ca
 n be used to construct a fully differential Monte Carlo event generator wh
 ich matches NNLO calculations to a parton shower.
LOCATION:MR19 (Potter Room\, Pavilion B)\, CMS
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