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Infrared Renormalons and Power Corrections in Deep-Inelastic Sum Rules
Xiangdong Ji, MIT
Infrared renormalons and power corrections in deep-inelastic sum rules are studied. The renormalization of operators with power divergence are discussed. The higher-twist t…
Probing Quark Fragmentation Functions for Spin-1/2 Baryon Production in Unpolarized Annihilation
Kun Chen, Gary R. Goldstein, R. L. Jaffe +1
We study the measurement of the quark fragmentation functions for spin-1/2 baryon production ( and , in particular) in unpolarized annihilation. The spin-depend…
A QCD Analysis of the Mass Structure of the Nucleon
Xiangdong Ji
{}From the deep-inelastic momentum sum rule and the trace anomaly of the energy-momentum tensor, I derive a separation of the nucleon mass into the contributions of the quark and g…
-Dependence of Deep Inelastic Sum Rules
Xiangdong Ji
In this talk, I will concentrate on -dependence of deep inelastic sum rules. I will first give a modern definition of deep-inelastic sum rules and then discuss physical origin…
Quark Fragmentation Functions in Low-Energy Chiral Theory
Xiangdong Ji, Zheng-Kun Zhu
We examine the physics content of fragmentation functions for inclusive hadron production in a quark jet and argue that it can be calculated in low energy effective theories. As an…