Interference fragmentation functions for large invariant mass

Dihadron Fragmentation Functions for Large Invariant Mass

“…This is true only in the light-cone gauge A − = 0 which we use for this analysis. In a covariant gauge, the treatment gets more involved [35]. In the end we indeed find a matching, showing the consistency of the factorization in terms of DiFFs for M hh ≫ Λ QCD as long as M hh ≪ Q.…”

“…In this paper, contributions from 3-gluon correlators are neglected since they do not affect any of our general results. We leave this part, details of the calculation, and the discussion about a potential singularity in (7) at ξ = 0 and ξ = 1 for future work [35].…”

“…Both the ∂ ⊥ -contribution and the A ⊥ -contribution can be brought into a gauge invariant form. After collecting all the pieces we find [35]…”