Slope and curvature of the hadronic 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.
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Physical Review D, American Physical Society, 2017, 96 (7), pp.074507 〈10.1103/PhysRevD.96.074507〉
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Soumis le : vendredi 4 mai 2018 - 15:16:18
Dernière modification le : mardi 29 mai 2018 - 14:34:23

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PhysRevD.96.074507.pdf
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Sz. Borsanyi, Z. Fodor, T. Kawanai, S. Krieg, L. Lellouch, et al.. Slope and curvature of the hadronic vacuum polarization at vanishing virtuality from lattice QCD. Physical Review D, American Physical Society, 2017, 96 (7), pp.074507 〈10.1103/PhysRevD.96.074507〉. 〈hal-01477989〉

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