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Using Coulomb gauge for next-to-leading order numerical calculations. (English) Zbl 1045.81560
Summary: Calculations of observables in quantum chromodynamics can be performed using a method in which all of the integrations, including integrations over virtual loop momenta, are performed numerically. We use this method to perform next-to-leading order calculations for event shape variables in electron-positron annihilation in Coulomb gauge. The use of a physical gauge provides the potential to go beyond a purely order \(\alpha_s^2\) calculation by including, for instance, renormation or parton showering effects.

MSC:
81V05 Strong interaction, including quantum chromodynamics
81-04 Software, source code, etc. for problems pertaining to quantum theory
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