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CATEGORIES:HEP phenomenology joint Cavendish-DAMTP seminar
SUMMARY:Integration-by-parts identities and multi-loop QCD
amplitudes - Herschel Chawdhry (Cambridge)
DTSTART;TZID=Europe/London:20190131T160000
DTEND;TZID=Europe/London:20190131T170000
UID:TALK115561AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/115561
DESCRIPTION:Abstract:\nIntegration-by-parts identities (IBPs)
are widely used when computing multi-loop scatteri
ng amplitudes. The solution of large systems of IB
Ps is a major bottleneck in the computation of hig
h-precision QCD amplitudes for processes observed
at the LHC\, such as 3-jet production. In this tal
k\, I will discuss my current work on IBPs\, first
presented in hep-ph/1805.09182\, where we introdu
ce a new strategy for solving systems of IBPs\, es
pecially applicable to problems with many kinemati
c scales and/or many master integrals. Using this
strategy\, we have solved the integration-by-parts
(IBP) identities needed for the computation of an
y planar 2-loop 5-point massless amplitude in QCD.
We have also derived some new results for the mos
t complicated non-planar topology. Ultimately\, we
anticipate that the remaining non-planar contribu
tions can be computed in analytic form.\n\nThe sli
des 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
CONTACT:Mathieu Pellen
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