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SUMMARY:Shedding light on new physics with Effective Field Theories - Ilia
 ria Brivio (Copenhagen)
DTSTART:20180511T150000Z
DTEND:20180511T160000Z
UID:TALK105859@talks.cam.ac.uk
CONTACT:Francesco Coradeschi
DESCRIPTION:Effective Field Theories (EFTs) are a powerful tool for invest
 igating the presence of new physics beyond the Standard Model. I will brie
 fly review the status of the Standard Model Effective Field Theory and dis
 cuss a few aspects of how its parameters can be constrained with global fi
 t analyses\, while trying to minimize the assumptions on UV physics.\nAs a
  case study I will show the results of a fit to electroweak data\, that ex
 hibits instructive features\, among which the presence of two combinations
  of Wilson coefficients that remain unconstrained when the analysis is res
 tricted to 2 -> 2 scattering processes and whose origin can be understood 
 in terms of a reparameterization invariance.
LOCATION:Ryle Seminar Room no. 930\, Rutherford Building\, Cavendish Labor
 atory
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