Аннотация
The hadronic light-by-light scattering contribution to the muon g-2 is the
most troublesome component of its theoretical prediction; (1) it cannot be
determined from the other measurable quantities, (2) the dimensional argument
and the estimation based on hadronic models imply that the magnitude of this
contribution may be comparable to the discrepancy between the standard model
prediction and the experimental value. The direct approach to evaluate the
hadronic light-by-light scattering contribution requires the evaluation of the
correlation function of four hadronic electromagnetic currents, and the
summation of it over two independent four-momenta of off-shell photons, which
is far from the reach of direct lattice simulation. Here we propose an
alternative method using combined (QCD + QED) lattice simulations to evaluate
the hadronic light-by-light scattering contribution.
Пользователи данного ресурса
Пожалуйста,
войдите в систему, чтобы принять участие в дискуссии (добавить собственные рецензию, или комментарий)