Slope and curvature of the hadron vacuum polarization at vanishing virtuality from lattice QCD

Abstract : We compute the slope and curvature, at vanishing four-momentum transfer squared, of the leading order hadron vacuum polarization function, using lattice QCD. Calculations are performed with 2+1+1 flavors of staggered fermions directly at the physical values of the quark masses and in volumes of linear extent larger than 6fm. The continuum limit is carried out using six different lattice spacings. All connected and disconnected contributions are calculated, up to and including those of the charm.
Type de document :
Pré-publication, Document de travail
6 pages, 3 figures. 2017
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https://hal.archives-ouvertes.fr/hal-01477989
Contributeur : Laurent Lellouch <>
Soumis le : lundi 27 février 2017 - 18:11:18
Dernière modification le : jeudi 23 novembre 2017 - 14:56:02

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  • HAL Id : hal-01477989, version 1
  • ARXIV : 1612.02364

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Sz. Borsanyi, Z. Fodor, T. Kawanai, S. Krieg, L. Lellouch, et al.. Slope and curvature of the hadron vacuum polarization at vanishing virtuality from lattice QCD. 6 pages, 3 figures. 2017. 〈hal-01477989〉

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