αs from the QCD static energy

Nora Brambilla; Alexei Bazavov; Xavier Garcia i Tormo; Péter Petreczky; Joan Soto; Antonio Vairo; Johannes Heinrich Weber

α_s from the QCD static energy

Nora Brambilla
, Alexei Bazavov
, Xavier Garcia i Tormo
, Péter Petreczky
, Joan Soto
, Antonio Vairo
, Johannes Heinrich Weber

Chair of Theoretische Teilchen- und Kernphysik

Department of Computational Mathematics, Science and Engineering
University of Bern
Brookhaven National Laboratory
Universitat de Barcelona

Research output: Contribution to journal › Conference article › peer-review

Abstract

We present our latest determination of the strong coupling constant α_s from the Quantum Chro-modynamics static energy: α_s(m_Z) = 0.1166⁺₋₀⁰₀₀₀₈⁰⁰¹², extracted at three loops with leading ultrasoft log resummation. The determination is based on a combination of lattice data on the static energy at small quark-antiquark distance and perturbative high-order calculations of the static energy for small quark-antiquark distance. We discuss further improvements from an upcoming extraction based on new lattice data, at smaller lattice spacings reaching shorter distances, and on lattice data on the singlet free energy at finite temperature at very small distances.

Original language	English
Journal	Proceedings of Science
Volume	365
State	Published - 2019
Event	2019 Alphas Workshop on Precision Measurements of the QCD Coupling Constant, ALPHAS 2019 - Trento, Italy Duration: 11 Feb 2019 → 15 Feb 2019

Cite this

@article{089db3c1e6204aedbc957a5c987c8755,

title = "αs from the QCD static energy",

abstract = "We present our latest determination of the strong coupling constant αs from the Quantum Chro-modynamics static energy: αs(mZ) = 0.1166+−0000080012, extracted at three loops with leading ultrasoft log resummation. The determination is based on a combination of lattice data on the static energy at small quark-antiquark distance and perturbative high-order calculations of the static energy for small quark-antiquark distance. We discuss further improvements from an upcoming extraction based on new lattice data, at smaller lattice spacings reaching shorter distances, and on lattice data on the singlet free energy at finite temperature at very small distances.",

author = "Nora Brambilla and Alexei Bazavov and \{Garcia i Tormo\}, Xavier and P{\'e}ter Petreczky and Joan Soto and Antonio Vairo and Weber, \{Johannes Heinrich\}",

note = "Publisher Copyright: {\textcopyright} Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0).; 2019 Alphas Workshop on Precision Measurements of the QCD Coupling Constant, ALPHAS 2019 ; Conference date: 11-02-2019 Through 15-02-2019",

year = "2019",

language = "English",

volume = "365",

journal = "Proceedings of Science",

issn = "1824-8039",

publisher = "Sissa Medialab Srl",

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TY - JOUR

T1 - αs from the QCD static energy

AU - Brambilla, Nora

AU - Bazavov, Alexei

AU - Garcia i Tormo, Xavier

AU - Petreczky, Péter

AU - Soto, Joan

AU - Vairo, Antonio

AU - Weber, Johannes Heinrich

N1 - Publisher Copyright: © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0).

PY - 2019

Y1 - 2019

N2 - We present our latest determination of the strong coupling constant αs from the Quantum Chro-modynamics static energy: αs(mZ) = 0.1166+−0000080012, extracted at three loops with leading ultrasoft log resummation. The determination is based on a combination of lattice data on the static energy at small quark-antiquark distance and perturbative high-order calculations of the static energy for small quark-antiquark distance. We discuss further improvements from an upcoming extraction based on new lattice data, at smaller lattice spacings reaching shorter distances, and on lattice data on the singlet free energy at finite temperature at very small distances.

AB - We present our latest determination of the strong coupling constant αs from the Quantum Chro-modynamics static energy: αs(mZ) = 0.1166+−0000080012, extracted at three loops with leading ultrasoft log resummation. The determination is based on a combination of lattice data on the static energy at small quark-antiquark distance and perturbative high-order calculations of the static energy for small quark-antiquark distance. We discuss further improvements from an upcoming extraction based on new lattice data, at smaller lattice spacings reaching shorter distances, and on lattice data on the singlet free energy at finite temperature at very small distances.

UR - https://www.scopus.com/pages/publications/85073419901

M3 - Conference article

AN - SCOPUS:85073419901

SN - 1824-8039

VL - 365

JO - Proceedings of Science

JF - Proceedings of Science

T2 - 2019 Alphas Workshop on Precision Measurements of the QCD Coupling Constant, ALPHAS 2019

Y2 - 11 February 2019 through 15 February 2019

ER -

α_s from the QCD static energy

Abstract

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