White Paper on Polarized Target Studies with Real Photons in Hall D

TL;DR

This white paper reviews the experimental setup and potential physics research opportunities involving polarized targets and real photons in Hall D at Jefferson Lab, emphasizing capabilities for baryon spectroscopy and nucleon structure studies.

Contribution

It provides a comprehensive overview of Hall D's infrastructure, photon beam properties, and outlines promising physics measurements for future experiments.

Findings

Hall D has advanced detection and rate capabilities.

Potential for new insights into baryon spectroscopy.

Feasibility of studying nucleon structure modifications.

Abstract

This white paper summarizes the Workshop on Polarized Target Studies with Real Photons in Hall D at Jefferson Lab, that took place on 21 February 2024. The Workshop included about 45 participants both online and in person at Florida State University in Tallahassee. Contributions describe the experimental infrastructure available in Hall D and potential physics applications. The rate and detection capabilities of Hall D are outlined, as well as the properties of a circularly polarized photon beam and a polarized target. Possible physics measurements include light and strange quark baryon spectroscopy, the GDH sum rule, proton structure accessed through measurement of Generalized Parton Distributions and modification of nucleon structure within the nuclear medium.