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SUMMARY:Integration-by-parts identities and multi-loop QCD amplitudes - He
 rschel Chawdhry (Cambridge) 
DTSTART:20190131T160000Z
DTEND:20190131T170000Z
UID:TALK115561@talks.cam.ac.uk
CONTACT:Mathieu Pellen
DESCRIPTION:Abstract:\nIntegration-by-parts identities (IBPs) are widely u
 sed when computing multi-loop scattering amplitudes. The solution of large
  systems of IBPs is a major bottleneck in the computation of high-precisio
 n QCD amplitudes for processes observed at the LHC\, such as 3-jet product
 ion. In this talk\, I will discuss my current work on IBPs\, first present
 ed in hep-ph/1805.09182\, where we introduce a new strategy for solving sy
 stems of IBPs\, especially applicable to problems with many kinematic scal
 es and/or many master integrals. Using this strategy\, we have solved the 
 integration-by-parts (IBP) identities needed for the computation of any pl
 anar 2-loop 5-point massless amplitude in QCD. We have also derived some n
 ew results for the most complicated non-planar topology. Ultimately\, we a
 nticipate that the remaining non-planar contributions can be computed in a
 nalytic form.\n\nThe slides of the presentation can be found "here":http:/
 /www.hep.phy.cam.ac.uk/~conference/Chawdhry_01_31_2019.pdf
LOCATION:MR19 (Potter Room\, Pavilion B)\, CMS
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