Herwig++ Monte Carlo At Next-To-Leading Order for e+e- annihilation and lepton pair production

TL;DR

This paper introduces the MC@NLO method for combining next-to-leading order QCD calculations with Herwig++ Monte Carlo simulations, improving accuracy in modeling e+e- annihilation and lepton pair production.

Contribution

It presents a novel approach to match NLO perturbative QCD with Herwig++ parton shower and hadronization, including detailed event generation procedures.

Findings

Predictions align well with experimental data.

Enhanced modeling accuracy for e+e- and Drell-Yan processes.

Method successfully incorporates spin, flavour, momentum, and colour information.

Abstract

This paper describes the MC@NLO method for matching next-to-leading order (NLO) perturbative QCD with the parton shower and hadronization model of the Monte Carlo (MC) event generator tt Herwig++, for e+e- annihilation and Drell-Yan lepton pair production. Details of the event generation method as well as spin, flavour, momentum and colour assignments are presented. We obtain predictions for various distributions which arecompared with experimental data.