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SUMMARY:Fabrizio Caola - Three-loop scattering amplitudes in QCD - Fabrizi
 o Caola (Oxford)
DTSTART:20220624T150000Z
DTEND:20220624T160000Z
UID:TALK173249@talks.cam.ac.uk
CONTACT:Maeve Madigan
DESCRIPTION:The seminar takes place in person in the Potter Room at DAMPT 
 and a broadcast is available via zoom: https://us02web.zoom.us/j/858966935
 92?pwd=cDBJMVJJNlkwcG9FWFBJNTJmTTJyQT09\n\n\nAbstract: \nScattering amplit
 udes are key ingredients for any QFT prediction. Although the recent past 
 saw many interesting results for scattering amplitudes in planar N=4 SYM\,
  these cannot easily be generalised to beyond the planar limit or to less 
 symmetric theories. As a result\, much less is known for amplitudes in rea
 listic theories. In this talk\, I will describe a recent calculation of th
 ree-loop 2 -> 2 QCD scattering amplitudes\, beyond the planar limit. After
  discussing the main features of the computation\, I will also illustrate 
 with few examples how these results can be used for LHC phenomenology and 
 for improving our understanding of the structure of perturbative gauge the
 ories. Specifically\, I will discuss how one can use the gg -> γγ 3-loop
  amplitude to better constrain the Higgs lifetime\, and the elastic parton
 -parton scattering amplitudes to investigate the Regge limit of QCD.
LOCATION:Potter Room (B1.19)
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