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Hadronic light-by-light scattering contributions to (g−2)μ from axial-vector and tensor mesons in the holographic soft-wall model

Pietro Colangelo*, Floriana Giannuzzi†, and Stefano Nicotri‡

  • *pietro.colangelo@ba.infn.it
  • †floriana.giannuzzi@ba.infn.it
  • ‡nicotri@infn.it
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Phys. Rev. D 109, 094036 – Published 23 May, 2024

DOI: https://doi.org/10.1103/PhysRevD.109.094036

Abstract

We compute the light axial-vector and tensor meson two-photon transition form factors in the soft-wall holographic model of quantum chromodynamics (QCD) in the flavor-symmetric case. They are used to evaluate the axial-vector and tensor meson contributions to the anomalous magnetic moment of the muon via the hadronic light-by-light scattering process. As expected, these contributions are smaller than the one from pseudoscalar mesons. The result for axial-vector mesons is higher than the value found in other approaches.

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Phys. Rev. D 109, 094036– Published 23 May, 2024
  • Received 16 February 2024
  • Accepted 6 May 2024
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