QCD determination of the magnetic field dependence of QCD and hadronic parameters

A set of four Finite Energy QCD sum rules are used to determine the magnetic field dependence of the sum of the up- and down-quark masses of QCD, $(m_u + m_d)$,thepiondecayconstant$f_\pi$,thepionmass$m_\pi$, the gluon condensate, $⟨0\mathrm{\mid }{\alpha }_s{G}^2\mathrm{\mid }0⟩$, and the squared energy threshold for the onset of perturbative QCD, $s_0$, related to the Polyakov loop of lattice QCD.