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Title: Differential equations from unitarity cuts: nonplanar hexa-box integrals

Journal Article · · Journal of High Energy Physics (Online)

We compute ϵ-factorized differential equations for all dimensionally-regularized integrals of the nonplanar hexa-box topology, which contribute for instance to 2-loop 5-point QCD amplitudes. A full set of pure integrals is presented. For 5-point planar topologies, Gram determinants which vanish in 4 dimensions are used to build compact expressions for pure integrals. Using unitarity cuts and computational algebraic geometry, we obtain a compact IBP system which can be solved in 8 hours on a single CPU core, overcoming a major bottleneck for deriving the differential equations. Alternatively, assuming prior knowledge of the alphabet of the nonplanar hexa-box, we reconstruct analytic differential equations from 30 numerical phase-space points, making the computation almost trivial with current techniques. We solve the differential equations to obtain the values of the master integrals at the symbol level. Full results for the differential equations and solutions are included as supplementary material.

Research Organization:
Univ. of California, Los Angeles, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
SC0009937
OSTI ID:
1611255
Journal Information:
Journal of High Energy Physics (Online), Vol. 2019, Issue 1; ISSN 1029-8479
Publisher:
Springer BerlinCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 31 works
Citation information provided by
Web of Science

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Cited By (19)

Analytic helicity amplitudes for two-loop five-gluon scattering: the single-minus case text January 2019
A numerical evaluation of planar two-loop helicity amplitudes for a W-boson plus four partons text January 2019
FiniteFlow: multivariate functional reconstruction using finite fields and dataflow graphs text January 2019
Analytic helicity amplitudes for two-loop five-gluon scattering: the single-minus case text January 2018
Analytic result for the nonplanar hexa-box integrals text January 2019
The two-loop five-point amplitude in $\mathcal N=8$ supergravity text January 2019
Analytic result for the nonplanar hexa-box integrals journal March 2019
Analytic Result for a Two-Loop Five-Particle Amplitude text January 2019
A numerical evaluation of planar two-loop helicity amplitudes for a W-boson plus four partons journal September 2019
Analytic Form of Planar Two-Loop Five-Gluon Scattering Amplitudes in QCD journal February 2019
Determining arbitrary Feynman integrals by vacuum integrals journal April 2019
Analytic helicity amplitudes for two-loop five-gluon scattering: the single-minus case journal January 2019
Analytic result for a two-loop five-particle amplitude text January 2018
All Master Integrals for Three-Jet Production at Next-to-Next-to-Leading Order text January 2019
The two-loop five-particle amplitude in $\mathcal{N}=8$ supergravity text January 2019
Analytic result for the nonplanar hexa-box integrals text January 2018
All Master Integrals for Three-Jet Production at Next-to-Next-to-Leading Order journal July 2019
Amplitudes from anomalous superconformal symmetry journal January 2019
Determine Arbitrary Feynman Integrals by Vacuum Integrals text January 2018

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