We present the analytic calculation of the Master Integrals for the twoloop, non-planar topologies that enter the calculation of the amplitude for top-quark pair hadroproduction in the quark-annihilation channel. Using the method of differential equations, we expand the integrals in powers of the dimensional regulator ϵ and determine the expansion coefficients in terms of generalized harmonic polylogarithms of two dimensionless variables through to weight four.
Becchetti M., Bonciani R., Casconi V., Ferroglia A., Lavacca S., von Manteuffel A. (2019). Master Integrals for the two-loop, non-planar QCD corrections to top-quark pair production in the quark-annihilation channel. JOURNAL OF HIGH ENERGY PHYSICS, 2019(8), 1-27 [10.1007/JHEP08(2019)071].
Master Integrals for the two-loop, non-planar QCD corrections to top-quark pair production in the quark-annihilation channel
Becchetti M.;Bonciani R.;
2019
Abstract
We present the analytic calculation of the Master Integrals for the twoloop, non-planar topologies that enter the calculation of the amplitude for top-quark pair hadroproduction in the quark-annihilation channel. Using the method of differential equations, we expand the integrals in powers of the dimensional regulator ϵ and determine the expansion coefficients in terms of generalized harmonic polylogarithms of two dimensionless variables through to weight four.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
