Production of two Z-bosons in gluon fusion in the heavy top quark approximation
Kirill MelnikovInstitute for Theoretical Particle Physics, Karlsruhe Institute of Technology, Karlsruhe, GermanyMatthew DowlingInstitute for Theoretical Particle Physics, Karlsruhe Institute of Technology, Karlsruhe, Germany
2015en
ABI
Abstract
We compute QCD radiative corrections to the continuum production of a pair of Z-bosons in the annihilation of two gluons. We only consider the contribution of the top quark loops and we treat them assuming that mt is much larger than any other kinematic invariant in the problem. We estimate the QCD corrections to pp→ZZ using the first non-trivial term in the expansion in the inverse top quark mass and we compare them to QCD corrections of the signal process, pp→H→ZZ.
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Cited by 20 references