Equation Icon  16πδ2 (α − 1)2G˙(a )2( 1 )2 ∫ Cvℓel(zS) = ----H-4-S----------S--- ------− 1 dkkT 2(k)j′ℓ(k χS)2. (1.7.15 ) H 0G2 (a = 1) ℋS χS