mb from ALEPH and comparison with other LEP experiments
F. Palla (ALEPH Collaboration, CERN)

TL;DR
This paper reviews measurements of the $b$-quark mass by ALEPH and DELPHI at LEP, demonstrating the running of the mass as predicted by QCD and comparing results at different energy scales.
Contribution
It provides a comprehensive analysis of $b$-quark mass measurements using various observables and jet algorithms, confirming the QCD prediction of mass running at the $Z$ pole.
Findings
Clear evidence of $b$-quark mass running observed
Measurements at the $Z$ pole are consistent with QCD predictions
Comparison with $$Upsilon(4S)$$ threshold results supports the mass evolution theory
Abstract
I will review the measurements of the -quark mass performed by ALEPH and DELPHI. A large set of observables has been used together with detailed studies on jet algorithms. Very clear effects due to the -quark mass running are observed. Comparing with the determinations at the threshold, the measurements of the running -quark mass at the pole are consistent with the predicted evolution from QCD.
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