Accessing Target Fragmentation: Prospects and Results from CLAS

Jul 20, 2022, 9:40 AM
Classroom 512 (APCTP)

Classroom 512


Asia Pacific Center for Theoretical Physics, Pohang, Gyeongbuk 37673, Korea


Timothy Hayward (University of Connecticut)


The study of the properties of hadrons produced in the target fragmentation region (TFR) serve as a test of our complete understanding of the production mechanisms in SIDIS and provide additional information on QCD dynamics that are not accessible in the current fragmentation region (CFR). We report first results for a number of TFR sensitive measurements that can be interpreted in terms of fracture functions, the conditional probability for the target remnant to form a specific hadron given an ejected quark. Measurements related to single hadron production, where a clear sign change is observed that captures the transition between both hemispheres, and back-to-back dihadron production, which provide access to the complete list of leading-twist fracture functions, will be presented. Finally, prospects for polarized target measurements at CLAS12 and future measurements at CLAS24 will be discussed.

Primary author

Timothy Hayward (University of Connecticut)

Presentation materials