Determination of αs from the QCD static energy: An update

Bazavov, Alexei; Brambilla, Nora; Garcia Tormo, Xavier; Petreczky, Péter; Soto, Joan; Vairo, Antonio (2014). Determination of αs from the QCD static energy: An update. Physical review. D - particles, fields, gravitation, and cosmology, 90(7), 074038. Melville, N.Y.: American Physical Society 10.1103/PhysRevD.90.074038

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We present an update of our determination of the strong coupling αs from the quantum chromodynamics static energy. This updated analysis includes new lattice data, at smaller lattice spacings and reaching shorter distances, the use of better suited perturbative expressions to compare with data in a wider distance range, and a comprehensive and detailed estimate of the error sources that contribute to the uncertainty of the final result. Our updated value for αs at the Z-mass scale, MZ, is αs(MZ)=0.1166+0.0012−0.0008, which supersedes our previous result.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Institute of Theoretical Physics

UniBE Contributor:

Garcia Tormo, Xavier

Subjects:

500 Science > 530 Physics

ISSN:

1550-7998

Publisher:

American Physical Society

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

15 Dec 2014 08:13

Last Modified:

13 Sep 2017 18:25

Publisher DOI:

10.1103/PhysRevD.90.074038

BORIS DOI:

10.7892/boris.61152

URI:

https://boris.unibe.ch/id/eprint/61152

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