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CATEGORIES:HEP phenomenology joint Cavendish-DAMTP seminar
SUMMARY:Consistency of the Standard Model Effective Field 
 Theory - Nicholas Rodd (UC Berkeley)
DTSTART;TZID=Europe/London:20210211T160000
DTEND;TZID=Europe/London:20210211T170000
UID:TALK156694AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/156694
DESCRIPTION:*The seminar will take place via Zoom "here":https
 ://maths-cam-ac-uk.zoom.us/j/95215212460?pwd=TWN5c
 jJ3azErSUYremw5UWRKL0NKUT09.*\n\nAbstract: In this
  talk I will describe how the analytic structure o
 f scattering amplitudes impose non-trivial constra
 ints on the standard model effective field theory 
 (SMEFT). For example\, in the bosonic sector\, I w
 ill explain how the bounds imply restrictions on t
 he size of certain CP-odd operators by associated 
 CP-even couplings. This result can be exploited to
  reveal a connection between constraints derived a
 t colliders and limits on the neutron electric dip
 ole moment. Further\, I will demonstrate that in t
 he fermionic sector\, IR consistency requires that
  flavour violating operators are bounded by the fl
 avour conserving variants. While most results will
  be presented for the SMEFT at dimension 8\, I wil
 l also describe recent progress allowing a subset 
 of the results to be lifted to dimension 6.
LOCATION:Virtual Seminar 
CONTACT:Joseph Davighi
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