Journal
PHYSICS LETTERS B
Volume 650, Issue 1, Pages 81-89Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2007.04.065
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We consider dihadron fragmentation functions, describing the fragmentation of a parton in two unpolarized hadrons, and in particular extended dihadron fragmentation functions, explicitly dependent on the invariant mass, M-h, of the hadron pair. We first rederive the known results on M-h-integrated functions using jet calculus techniques, and then we present the evolution equations for extended dihadron fragmentation functions. Our results are relevant for the analysis of experimental measurements of two-particle-inclusive processes at different energies. (c) 2007 Elsevier B.V. All rights reserved.
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