Measurements of lepton-jet azimuthal decorrelation and 1-jetttiness event shape at high $Q^2$ in deep inelastic scattering (DIS) with the H1 experiment at HERA

TL;DR

This paper reports measurements of lepton-jet azimuthal decorrelation and 1-jettiness event shape in high-Q^2 deep inelastic scattering at HERA, providing insights into nucleon structure and QCD dynamics.

Contribution

It presents novel measurements of azimuthal decorrelation and event shapes in DIS, enhancing understanding of hadronization and nucleon structure at high energy scales.

Findings

Lepton-jet azimuthal decorrelation observed at high Q^2.

1-jettiness event shape characterized in DIS data.

Results support QCD predictions and inform nucleon structure models.

Abstract

Recent progress towards realizing the Electron-Ion Collider (EIC) that was announced in 2020 to be built at Brookhaven National Laboratory (BNL) in the United States has revived interests in the deep-inelastic-scattering (DIS) data taken from $ep$ collisions at Hadron-Electron Ring Accelerator (HERA). The H1 detector equipped with tracking and fully instrumented calorimeter detectors in its hermetic and asymmetric design is well suited for jet and event shape measurements. Proposed measurements involving jets, global events shapes and correlations in DIS for HERA and EIC focus on the three-dimensional description of nucleon structure and hadronization and their their flavor dependence as well as precision measurements for QCD and BSM. This contribution presents recent results on the lepton-jet azimuthal decorrelation and the 1-jettiness event shape measurements performed using the DIS data at high $Q^2$ taken with the H1 detector at HERA.