$O(\alpha_s^2)$ corrections to fully-differential top quark decays
Mathias Brucherseifer, Fabrizio Caola, Kirill Melnikov
TL;DR
This paper presents a detailed calculation of the top quark decay rate into a bottom quark and lepton pair at the next-to-next-to-leading order in QCD, providing precise theoretical predictions for decay distributions.
Contribution
It introduces the first fully-differential calculation of top quark decay at order in perturbative QCD, including technical details and distribution results.
Findings
Calculated decay rate at order
Provided kinematic distribution results
Enhanced precision in top decay modeling
Abstract
We describe a calculation of the fully-differential decay rate of a top quark to a massless -quark and a lepton pair at next-to-next-to-leading order in perturbative QCD. Technical details of the calculation are discussed and selected results for kinematic distributions are shown.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Quantum Chromodynamics and Particle Interactions · International Science and Diplomacy