Revisiting the QCD corrections to the R-parity violating processes $p\bar{p}/pp \to e\mu+X$

TL;DR

This paper provides next-to-leading order QCD predictions for high-mass electron-muon pair production via R-parity violating processes at Tevatron and LHC, including scale dependence, PDF uncertainties, and soft-gluon resummation effects.

Contribution

It offers the first detailed NLO QCD analysis of R-parity violating $e\mu$ production, incorporating soft-gluon resummation for transverse momentum distributions.

Findings

NLO QCD corrections significantly affect cross section predictions.

Scale and PDF uncertainties impact the K-factor and distributions.

Soft-gluon resummation improves the accuracy of transverse momentum spectra.

Abstract

We present the theoretical predictions up to QCD NLO for the cross section of high-mass electron-muon pair production at the Tevatron and the LHC, considering only the dominant contributions from the third-generation sneutrino. The dependence of the renormalization and factorization scales on the total cross section, and the effects on the K-factor due to the uncertainty of parton distribution function(PDF) have been carefully investigated. By considering soft-gluon resummation effects to all order in $\alpha_s$ of leading logarithm, we present the transverse momentum distributions of the final $e\mu$ pair.