Equation Icon  √ -- j 4G q2 ( j′′ j′′) 2q ( j ji′′′ j ji′′′) Ji = cMB ξiI + ξRP k𝜖jki +--4P kQkiS′p′in + --3 ξkRηR + ξkIηI 𝜖jki +---4- ξIQ E − ξRQ M 5c √ -3c ( 15c) Gq2--( j′′ ji′′ j′′ ji′′ ) --2Gq- lj′′ lk′′′ lj′′ lk′′′ + 15c7 ηR QSpin − ηI Q Mass + 45c8 QMassQ E + Q SpinQ M 𝜖jki. (6.38 )