The dihadron fragmentation function and its evolution

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Dihadron fragmentation functions and their evolution arestudied in the process of e+e- annihilation. Under the collinearfactorization approximation and facilitated by the cut-vertex technique,the two hadron inclusive cross section at leading order (LO) is shown tofactorize into a short distance parton cross section and a long distancedihadron fragmentation function. We provide the definition of such adihadron fragmentation function in terms of parton matrix elements andderive its DGLAP evolution equation at leading log. The evolutionequation for the non-singlet quark fragmentation function is solvednumerically with a simple ansatz for the initial condition and resultsare presented for cases of physical interest.

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Majumder, Abhijit & Wang, Xin-Nian February 24, 2004.

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Dihadron fragmentation functions and their evolution arestudied in the process of e+e- annihilation. Under the collinearfactorization approximation and facilitated by the cut-vertex technique,the two hadron inclusive cross section at leading order (LO) is shown tofactorize into a short distance parton cross section and a long distancedihadron fragmentation function. We provide the definition of such adihadron fragmentation function in terms of parton matrix elements andderive its DGLAP evolution equation at leading log. The evolutionequation for the non-singlet quark fragmentation function is solvednumerically with a simple ansatz for the initial condition and resultsare presented for cases of physical interest.

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  • Journal Name: Physics Review; Journal Volume: 70; Journal Issue: 1; Related Information: Journal Publication Date: 27 July,2004

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  • Report No.: LBNL--54628
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 927010
  • Archival Resource Key: ark:/67531/metadc897758

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  • February 24, 2004

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  • Sept. 27, 2016, 1:39 a.m.

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  • Nov. 23, 2016, 3:58 p.m.

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Majumder, Abhijit & Wang, Xin-Nian. The dihadron fragmentation function and its evolution, article, February 24, 2004; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc897758/: accessed January 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.