Two-loop helicity amplitudes for the production of two off-shell electroweak bosons in gluon fusion
نویسندگان
چکیده
We compute the part of the two-loop virtual amplitude for the process gg → V1V2 → (l1 l̄ ′ 1)(l2 l̄ ′ 2), where V1,2 are arbitrary electroweak gauge bosons, that receives contributions from loops of massless quarks. Invariant masses of electroweak bosons are allowed to be different from each other. Our result provides an important ingredient for improving the description of gluon fusion contribution to the production of four-lepton final states at the LHC.
منابع مشابه
Two-loop helicity amplitudes for the production of two off-shell electroweak bosons in quark-antiquark collisions
1 Institute for Theoretical Particle Physics, KIT, Karlsruhe, Germany Institute for Advanced Study, Princeton, NJ 08540, USA, USA Scientific Research Computing Center, Moscow State University, 119991 Moscow, Russia 4 Skobeltsyn Institute of Nuclear Physics of Moscow State University, 119991 Moscow, Russia Knowledge of two-loop QCD amplitudes for processes qq̄ → V1V2 → (l1 l̄ 1)(l2 l̄ 2) is importa...
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