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Journal articles
Strong running coupling at $\tau$ and $Z_0$ mass scales from lattice QCD
B. Blossier
1
Ph. Boucaud
1
M. Brinet
2
F. de Soto
X. Du
2
Vincent Morenas
3
O. Pène
K. Petrov
J. Rodríguez-Quintero
B. Blossier 1
Author
Ph. Boucaud 1
Author IdHAL : ph-boucaud ORCID : https://orcid.org/0000-0002-5385-1998
M. Brinet 2
Author
F. de Soto
Author
J. Rodríguez-Quintero
Author
1
LPT - Laboratoire de Physique Théorique d'Orsay [Orsay] (Bâtiment 210 Université Paris XI 91405 Orsay Cedex - France)
- CNRS - Centre National de la Recherche Scientifique : UMR8627 (France)
- UP11 - Université Paris-Sud - Paris 11 (Bâtiment 300 - 91405 Orsay cedex - France)
2
LPSC - Laboratoire de Physique Subatomique et de Cosmologie (53 avenue des Martyrs - 38026 Grenoble Cedex - France)
- Grenoble INP - Institut polytechnique de Grenoble - Grenoble Institute of Technology (46 avenue Félix Viallet 38031 Grenoble Cedex 1 - France)
- Institut Polytechnique de Grenoble - Grenoble Institute of Technology (France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- UJF - Université Joseph Fourier - Grenoble 1 (BP 53 - 38041 Grenoble Cedex 9 - France)
- CNRS - Centre National de la Recherche Scientifique : UMR5821 (France)
3
LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand (Campus des Cézeaux, 24 avenue des Landais, BP 80026, 63171 Aubière Cedex - France)
- UBP - Université Blaise Pascal - Clermont-Ferrand 2 (34, avenue Carnot - BP 185 / 63006 Clermont-Ferrand cedex - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- CNRS - Centre National de la Recherche Scientifique : UMR6533 (France)
Abstract : This letter reports on the first computation, from data obtained in lattice QCD with $u,d,s$ and $c$ quarks in the sea, of the running strong coupling via the ghost-gluon coupling renormalized in the MOM Taylor scheme. We provide with estimates of $\alpha_{\bar{\rm MS}}(m_\tau^2)$ and $\alpha_{\bar{\rm MS}}(m_Z^2)$ (for which the inclusion of the dynamical charm quark makes the running much safer) in very good agreement with experimental results.
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Journal articles
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http://hal.in2p3.fr/in2p3-00664197
Contributor : Emmanuelle Vernay <>
Submitted on : Monday, January 30, 2012 - 9:14:30 AM
Last modification on : Tuesday, April 20, 2021 - 12:00:12 PM
Contributor : Emmanuelle Vernay <>
Submitted on : Monday, January 30, 2012 - 9:14:30 AM
Last modification on : Tuesday, April 20, 2021 - 12:00:12 PM
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- HAL Id : in2p3-00664197, version 1
- ARXIV : 1201.5770
- DOI : 10.1103/PhysRevLett.108.262002
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IN2P3 | LPC-CLERMONT | LPSC | CNRS | PRES_CLERMONT | GEPI | UGA
Citation
B. Blossier, Ph. Boucaud, M. Brinet, F. de Soto, X. Du, et al.. Strong running coupling at $\tau$ and $Z_0$ mass scales from lattice QCD. Physical Review Letters, American Physical Society, 2012, 108, pp.262002. ⟨10.1103/PhysRevLett.108.262002⟩. ⟨in2p3-00664197⟩
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