Speaker
Radzhabov, Andrey
(Institute for System Dynamics and Control Theory SB RAS)
Description
The hadronic light-by-light (HLbL) contribution to the muon anomalous magnetic moment is calculated within a nonlocal quark model incorporating scalar--pseudoscalar and vector--axial-vector interactions.
Both resonance contributions and contact terms are included in the calculation.
For the non-strange quark loop, the obtained contribution is
$
a_{\mu}^{\mathrm{HLbL,\,Loop}} = (93 \pm 9.9) \times 10^{-11}.
$
The total HLbL contribution, accounting for meson exchanges and strange quark effects, is
$
a_{\mu}^{\mathrm{HLbL}} = (154 \pm 12.4) \times 10^{-11}.
$
When combined with other contributions, our result shows good agreement with recent experimental data.
Authors
Radzhabov, Andrey
(Institute for System Dynamics and Control Theory SB RAS)
Zhevlakov, Alexey
(JINR)
