Equation Icon  1 N μναβ(x,y) = -ℱ μxναβNA (x − y;m2 ) + ℱ μxνℱxαβNB (x − y;m2, Δ ξ), 6 (102 ) μναβ 1- μναβ 2 μν αβ 2 HA (x,y) = 6ℱ x DA (x − y; m ) + ℱ x ℱ x DB (x − y;m ,Δ ξ).