2011
DOI: 10.1103/physrevlett.106.172001
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Dihadron Fragmentation Functions for Large Invariant Mass

Abstract: 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 , which plays an important role in spin physics of the nucleon. Our calculation also reveals that H ∢ 1 and the Collins fragmentation function have a closely related underlying dynamics. By considering semi-inclusive deep-inelastic scattering, we further show that collinear factorization in terms of dihadron fr… Show more

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Cited by 16 publications
(13 citation statements)
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“…For the following reasons the scale-dependence of all the asymmetries is rather weak: because the leading order evolution kernels for f 1 and g 1 are the same, A LL is almost scale-independent. This also applies to A LT when using the approximations (25) and (26). Since both the parameterization of the Sivers function in [51] as well as the one for the ETQS matrix element T F in [9,70] are related to the unpolarized distribution f 1 , also the scale dependence of A U T is quite mild.…”
Section: Numerical Estimatesmentioning
confidence: 97%
“…For the following reasons the scale-dependence of all the asymmetries is rather weak: because the leading order evolution kernels for f 1 and g 1 are the same, A LL is almost scale-independent. This also applies to A LT when using the approximations (25) and (26). Since both the parameterization of the Sivers function in [51] as well as the one for the ETQS matrix element T F in [9,70] are related to the unpolarized distribution f 1 , also the scale dependence of A U T is quite mild.…”
Section: Numerical Estimatesmentioning
confidence: 97%
“…DFFs for large invariant mass are studied in Ref. [60]. The dihadron fragmentation functions' evolution equations are derived in Ref.…”
Section: Introductionmentioning
confidence: 99%
“…At leading twist, if the invariant mass of the pair is much smaller than Q the underpinnings of factorization theorems for the single-hadron case remain valid also for the two-hadron case (the situation may be different for a large invariant mass [20]). Then, we apply a parton-model scheme to the analysis of The production of two hadrons in SIDIS has been studied in several papers.…”
Section: Introductionmentioning
confidence: 99%