Fragmentation inside an identified jet
Author(s)
Procura, Massimiliano; Stewart, Iain
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Using Soft‐Collinear Effective Theory (SCET) we derive factorization formulae for semi‐inclusive processes where a light hadron h fragments from a jet whose invariant mass is measured. Our analysis yields a novel “fragmenting jet function” Gih(s,z) that depends on the jet invariant mass √s, and on the fraction z of the large light‐cone momentum components of the hadron and the parent parton i. We show that Gih(s,z) can be computed in terms of perturbatively calculable coefficients, Jij(s,z/x), integrated against standard non‐perturbative fragmentation functions, Djh(x). Our analysis yields a simple replacement rule that allows any factorization theorem depending on a jet function Ji to be converted to a semi‐inclusive process with a fragmenting hadron h.
Date issued
2010-08Department
Massachusetts Institute of Technology. Center for Theoretical Physics; Massachusetts Institute of Technology. Center for Theoretical Physics; Massachusetts Institute of Technology. Department of PhysicsJournal
Proceedings of the IX International Conference on Quark Confinement and the Hadron Spectrum, QCHS IX, Madrid, Spain, 30 August-3 September 2010
Publisher
American Institute of Physics
Citation
Procura, Massimiliano, and Iain W. Stewart. “Fragmentation Inside an Identified Jet.”
in Proceedings of the IX INTERNATIONAL CONFERENCE ON QUARK CONFINEMENT AND THE HADRON SPECTRUM—QCHS IX, 30 August–3 September 2010, Madrid, (Spain), 2011. 424–426. Web. (AIP Conf. Proc. 1343)
Version: Author's final manuscript
ISBN
9780735408999
0735408998