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Dihadron fragmentation functions for large invariant mass

Zhou, J
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Metz, A
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Journal Article
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2011-04-29
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hep-ph
 hep-ph
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http://hdl.handle.net/20.500.12613/6040
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1101.3273v2.pdf
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10.1103/PhysRevLett.106.172001
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 H1, which plays an important role in spin physics of the nucleon. Our calculation also reveals that H1 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. © 2011 American Physical Society.
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Physical Review Letters
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