Factorization and Resummation for the Nearside Energy-Energy Correlators

Abstract

By utilizing the di-hadron fragmentation formalism, we extend the previous factorization of nearside energy-energy correlators (EEC) in the collinear limit and derive an all order resummation in the Fourier transform $b_T$-space. A perfect matching is obtained when we compare to the fixed-order results. We further demonstrate the resummation effects for the EEC in $e^{+}{e}^{-}$ annihilation and show that they will significantly improve the theoretical predictions at small angles.

Comments: 8 pages, 2 figures