Electroweak superpartner production at 13.6 TeV with Resummino

TL;DR

This paper updates the Resummino software for precise electroweak superpartner production cross section calculations at 13.6 TeV LHC energies, demonstrating improved accuracy and reduced uncertainties in supersymmetric particle predictions.

Contribution

It introduces new features to the Resummino package and applies threshold resummation at NNLL accuracy to supersymmetric particle production at the LHC.

Findings

Slight increase in total cross section predictions.

Significant reduction in theoretical uncertainties.

Results depend on squark mass assumptions.

Abstract

Due to the greater experimental precision expected from the currently ongoing LHC Run 3, equally accurate theoretical predictions are essential. We update the documentation of the Resummino package, a program dedicated to precision cross section calculations for the production of a pair of sleptons, electroweakinos, and leptons in the presence of extra gauge bosons, and for the production of an associated electroweakino-squark or electroweakino-gluino pair. We detail different additions that have been released since the initial version of the program a decade ago, and then use the code to investigate the impact of threshold resummation corrections at the next-to-next-to-leading-logarithmic accuracy. As an illustration of the code we consider the production of pairs of electroweakinos and sleptons at the LHC for centre-of-mass energies ranging up to 13.6 TeV and in simplified model scenarios. We find slightly increased total cross section values, accompanied by a significant decrease of the associated theoretical uncertainties. Furthermore, we explore the dependence of the results on the squark masses.