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SUMMARY:Infrared renormalons in top-mass sensitive observables and kinemat
 ic distributions at the LHC - Silvia Ferrario Ravasio\, University of Oxfo
 rd
DTSTART:20201201T160000Z
DTEND:20201201T170000Z
UID:TALK153880@talks.cam.ac.uk
CONTACT:Heribertus Bayu Hartanto
DESCRIPTION:An accurate measurement of the top mass and of the kinematic\n
 distributions of EW gauge bosons is a crucial part of the LHC physics\npro
 gram. The former is affected by non-perturbative corrections\, also\nknown
  as renormalons. Their impact is of the order of a typical\nhadronic scale
  $\\Lambda$. If such corrections would be present also in\nthe transverse-
 momentum distribution of the $Z$ boson\, they would be\ncomparable to the 
 current theoretical uncertainty and potentially\nlarger than the experimen
 tal one. In this talk I present a method that\ncan be used to infer the pr
 esence of such renormalon corrections. We\napply it to the case of single-
 top production to assess whether the\nmass renormalon propagates on top-ma
 ss dependent observables. We also\ninvestigate $Z$+jet production at hadro
 n colliders\, finding no\nnumerical evidence of linear power corrections.
LOCATION:https://cern.zoom.us/j/99606064308?pwd=UjZKZ1c2dTV3WHRBcWlnQ2Fld0
 F1dz09
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