Hyperfine splitting in the bottomonium system on the lattice and in the continuum

Nikolai Zerf

Hyperfine splitting in the bottomonium system on the lattice and in the continuum

High Energy Physics - Phenomenology 2015-11-17 v1

Authors: Nikolai Zerf

Abstract

The latest experimental measurements of the hyperfine splitting $E_{\rm{hfs}}=M_{\Upsilon(1 S)}-M_{\eta_b(1 S)}$ done by the Belle collaboration and the perturbative and lattice QCD predictions show a tension with the current extraction within lattice non-relativistic QCD. In this talk we revise the analysis of radiative corrections to the bottomonium hyperfine splitting within lattice non-relativistic QCD at the next-to-leading order. The result of the analysis is in good agreement with the perturbative and lattice QCD result as well as the direct measurement.

Keywords

hyperfine splitting bottomonium lattice QCD continuum non-relativistic QCD radiative corrections Belle collaboration

Cite

@article{arxiv.1511.04958,
  title  = {Hyperfine splitting in the bottomonium system on the lattice and in the continuum},
  author = {Nikolai Zerf},
  journal= {arXiv preprint arXiv:1511.04958},
  year   = {2015}
}

Comments

Contribution to the proceedings of the 12th International Symposium on Radiative Corrections (Radcor 2015) and LoopFest XIV (Radiative Corrections for the LHC and Future Colliders) 15-19 June 2015 UCLA Department of Physics & Astronomy Los Angeles, CA, USA. 7 pages, 2 figures

Hyperfine splitting in the bottomonium system on the lattice and in the continuum

Abstract

Keywords

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