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Jet fragmentation and gauge/string duality

By Yoshitaka Hatta and Toshihiro Matsuo

Abstract

We consider an analog of e + e − annihilation in gauge theories which have a dual string description in asymptotically AdS5 space and discuss the nature of jet fragmentation. We construct the timelike anomalous dimension which governs the scale dependence of the fragmentation function. In the limit of infinite ’t Hooft coupling, the average multiplicity rises linearly with the energy and the inclusive spectrum is peaked at the kinematical boundary.

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