Precision jet measurements at HERA and determination of \alpha_s
Roman Kogler
TL;DR
This paper reviews high-precision jet measurements at HERA, demonstrating their consistency with QCD predictions and using them to accurately determine the strong coupling constant _s(M_Z).
Contribution
It presents the latest methods and results of jet measurements at HERA for extracting _s(M_Z), improving the precision of the strong coupling determination.
Findings
Jet measurements agree with NLO QCD calculations.
_s(M_Z) values are consistent across different analyses.
High-precision data constrains the strong coupling constant.
Abstract
The status is reviewed of recent high precision measurements of inclusive-jet, dijet and trijet production in deep-inelastic scattering and photoproduction by the HERA experiments H1 and ZEUS. The measurements are in good agreement with perturbative QCD calculations at next-to-leading order and are used for the extraction of the value of the strong coupling at the mass of the Z boson, \alpha_s(M_Z). The methods and results of the QCD analyses are presented and a summary of the values of \alpha_s(M_Z) from recent jet measurements at HERA is given.
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