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Photo of Johan Bijnens

Johan Bijnens

Professor

Photo of Johan Bijnens

Connected, disconnected and strange quark contributions to HVP

Author

  • Johan Bijnens
  • Johan Relefors

Summary, in English

We calculate all neutral vector two-point functions in Chiral Perturbation Theory (ChPT) to two-loop order and use these to estimate the ratio of disconnected to connected contributions as well as contributions involving the strange quark. We extend the ratio of −1/10 derived earlier in two flavour ChPT at one-loop order to a large part of the higher order contributions and discuss corrections to it. Our final estimate of the ratio disconnected to connected is negative and a few % in magnitude.

Department/s

  • Theoretical Particle Physics

Publishing year

2016-11-01

Language

English

Publication/Series

Journal of High Energy Physics

Volume

2016

Issue

11

Document type

Journal article

Publisher

Springer

Topic

  • Subatomic Physics

Keywords

  • Chiral Lagrangians
  • Lattice QCD
  • Precision QED

Status

Published

ISBN/ISSN/Other

  • ISSN: 1029-8479