Search for Exotic Glue in Nuclei: Gluonic Transversity in Polarized DIS

Conference · Sat Sep 01 00:00:00 EDT 2018 · Proceedings of Science

DOI:https://doi.org/10.22323/1.346.0174· OSTI ID:1968267

Maxwell, James ^[1]

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1. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Although crucial to our understanding of nuclear structure, probes of gluonic components in the nucleus can be elusive, as gluons are accessed only indirectly in deep inelastic scattering. In 1989, Jaffe and Manohar identified a gluonic transveristy structure function $$\Delta(x,Q^2)$$ which is sensitive to exotic gluonic states in the nucleus, and is accessible via an inclusive measurement on a transversely polarized nucleus of spin greater than or equal to 1. We are developing an experiment to utilize Jefferson Lab's 12 GeV electron beam with a transversely polarized $$^{14}$$N target to mount a first measurement of the $$\Delta$$ structure function. The Jefferson Lab experiment will probe $$\Delta$$ from from $$x$$ of 0.3 to 0.05, but the vast kinematic reach of an electron-ion collider would allow a thorough probe of this quantity. We will discuss the impact of exciting new lattice QCD results on this quantity, our proposal to measure $$\Delta(x,Q^2)$$ at JLab, and what a measurement might look like at an EIC.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1968267
• Report Number(s): JLAB-PHY-19-2853
• Journal Information: Proceedings of Science, Vol. SPIN 2018; Conference: 23rd International Spin Physics Symposium - SPIN2018, Ferrara, Italy, September 10-14, 2018
• Country of Publication: United States
• Language: English