New measurement of charge asymmetry $x{F}_3$ from HERA
Laurent Schoeffel
TL;DR
This paper reports a new measurement of the charge asymmetry $xF_3$ from HERA, analyzing neutral current cross sections in deep inelastic scattering and exploring gamma-Z interference effects within perturbative QCD.
Contribution
It provides the first detailed measurement of $xF_3$ charge asymmetry at HERA and extracts the gamma-Z interference contribution from the data.
Findings
Measurement of $xF_3$ charge asymmetry at HERA
Observation of gamma-Z interference effects
Results consistent with perturbative QCD predictions
Abstract
After presenting the recent measurements of neutral current cross section in DIS at HERA, we explain the effect of the interference at the electro-weak scale, visible on these data. Then, the beam charge difference is measured and the interference itself is extracted. Results are discussed in the context of perturbative QCD.
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