W Boson Kinematic Analysis at the Tevatron: A comparison of ResBos resummation and Pythia generator

TL;DR

This paper compares the kinematic predictions of the ResBos resummation program and the Pythia generator for W boson production at the Tevatron, highlighting their similarities and differences for electroweak measurements.

Contribution

It provides a detailed comparison of ResBos and Pythia for W boson kinematics, emphasizing the limitations of Pythia for precision electroweak analyses.

Findings

ResBos and Pythia show marginal agreement in W boson kinematic distributions.

Pythia cannot reliably replace ResBos for invariant mass and electroweak precision measurements.

Both programs reproduce qualitative features but differ quantitatively.

Abstract

The kinematical features of the differential cross section distributions in inclusive W boson production at the Tevatron (ppbar -> W X -> e \u{psion}_e X) are presented using the resummation program ResBos, and the Monte Carlo event generator Pythia, and are found to be in marginal agreement with each other. While both programs reproduce the basic qualitative features of W boson, the distributions validate that Pythia can't be used as a reliable substitute for ResBos as far as the invariant mass of W boson and other electroweak precision measurements are concerned.