Hadronic effects in low-energy QCD: inclusive tau lepton decay

TL;DR

This paper investigates the impact of hadronization effects on low-energy QCD through inclusive tau lepton decay, demonstrating the effectiveness of a dispersive approach in matching experimental data and ensuring self-consistency.

Contribution

It introduces a dispersive approach to QCD that accurately describes tau decay data and highlights the importance of hadronization effects at low energies.

Findings

Successfully describes experimental tau decay data in vector and axial-vector channels

Shows consistency of QCD scale parameter across channels

Emphasizes the significance of hadronization effects in low-energy QCD

Abstract

The inclusive tau lepton hadronic decay is studied within Dispersive approach to QCD. The significance of effects due to hadronization is convincingly demonstrated. The approach on hand proves to be capable of describing experimental data on tau lepton hadronic decay in vector and axial-vector channels. The vicinity of values of QCD scale parameter obtained in both channels bears witness to the self-consistency of developed approach.