Factorized lightcone expansion of conformal blocks

Wenliang Li
2021 Journal of High Energy Physics  
We present a factorized decomposition of 4-point scalar conformal blocks near the lightcone, which applies to arbitrary intermediate spin and general spacetime dimensions. Then we discuss the systematic expansion in large intermediate spin and the resummations of the large-spin tails of Regge trajectories. The basic integrals for the Lorentzian inversion are given by Wilson functions.
doi:10.1007/jhep05(2021)128 fatcat:fph562hsavbwbeu6xgtrc56mvm