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SUMMARY:Mapping the SMEFT to UV models for four-fermion operators - Fabian
  Esser (Valencia)
DTSTART:20221028T150000Z
DTEND:20221028T160000Z
UID:TALK178232@talks.cam.ac.uk
CONTACT:Maeve Madigan
DESCRIPTION:The top-down matching of specific scenarios for new physics on
 to the Standard Model Effective Field Theory (SMEFT) is well-understood an
 d easy to automise.\nThe inverse approach\, however\, the bottom-up matchi
 ng of the SMEFT to UV models and in particular a systematic exploration of
  these discoverable UV models is more difficult.\nI will present a diagram
 matic technique to construct in an automated way a complete (under certain
 \, well specified assumptions) set of possible UV models that produce spec
 ific groups of SMEFT operators.  \nAs an illustration I will focus on gene
 rating models with no tree-level contributions to four-fermion (4F) operat
 ors.\nThose scenarios\, which only contribute to 4F operators at one-loop 
 order\, can contain relatively light particles that could be discovered at
  the LHC in direct searches and lead to an interesting interplay between i
 ndirect SMEFT and direct searches.\nAs an example I will discuss minimal m
 odels for 4F operators\, their matching to the SMEFT and their role in the
  interplay between direct and indirect searches at the LHC.
LOCATION:Potter Room (B1.19)
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