Dihadron Fragmentation Functions for Large Invariant Mass

作者：Zhou J^*; Metz A

来源：Physical Review Letters, 2011, 106(17): 172001.

DOI：10.1103/PhysRevLett.106.172001

Using perturbative quantum chromodynamics, we compute dihadron fragmentation functions for a large invariant mass of the dihadron pair. The main focus is on the interference fragmentation function H-1(measured angle) which plays an important role in spin physics of the nucleon. Our calculation also reveals that H-1(measured angle) and the Collins fragmentation function have closely related underlying dynamics. By considering semi-inclusive deep-inelastic scattering, we further show that collinear factorization in terms of dihadron fragmentation functions and collinear factorization in terms of single-hadron fragmentation functions provide the same result in the region of intermediate invariant mass.

• 出版日期2011-4-29