Inclusive Perspectives

TL;DR

This paper explores the connection between inclusive and exclusive hadronic processes through Bloom-Gilman duality, highlighting how different limits and Fock state contributions influence scattering behavior and scaling in high-energy physics.

Contribution

It provides a review of experimental evidence and theoretical insights into the duality between inclusive and exclusive processes, emphasizing the role of target Fock states and large transverse size configurations.

Findings

Experimental evidence supports the relevance of fixed mass limit at high xF.

Inclusive and exclusive processes involve the same target Fock states.

DIS scaling suggests large transverse size Fock states contribute to hard exclusive processes.

Abstract

I discuss the relation between inclusive and exclusive dynamics suggested by Bloom-Gilman duality. Duality implies the simultaneous applicability of two distinct limits, the standard DIS limit of hard inclusive processes taken at fixed xB and a limit where the hadronic mass is held fixed. I review experimental evidence for the relevance of the fixed mass limit in inclusive processes at high xF. Semi-local duality suggests that inclusive and exclusive processes occur on the same target Fock states. DIS scaling then implies that the Fock states contributing to hard exclusive processes have a large transverse size, i.e., that the hard scattering occurs off a single parton which carries a large fraction of the hadron momentum.