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Title: SoLID-SIDIS: Future Measurements of Transversity, TMDs and more

Over the past few decades, investigations of the nucleon structure mainly focused on the one-dimensional study of parton distributions and structure functions. New theoretical developments, including both transverse momentum distributions (TMDs) and generalized parton distributions (GPDs), provide a new way to understand the 3-dimensional structure of the nucleon. TMDs give access to the nucleon tomography in the momentum space, and also provide an opportunity to evaluate the contribution of quarks’ and gluons’ orbital angular momenta to the nucleon spin. The experimental study of TMDs requires a device with high luminosity, large kinematic coverage and great detection resolutions. With the Jefferson Lab (JLab) 12 GeV electron beam, we have proposed a Solenoidal Large Intensity Device (SoLID) in Hall A which is capable of performing such measurements. Several newly approved experiments will perform measurements of both the single and double spin asymmetries via semi-inclusive deep inelastic scattering (SIDIS) from polarized 3He ("neutron") and proton targets. The new data will provide important information to extract TMDs with unprecedented precision. Besides, we are also able to use SoLID to explore many more important physics topics. Several experiments for the measurements of PVDIS and J=y production have been approved, and new proposals are under development.more » For example, with the similar SIDIS configuration, we are actively developing new measurements to study GPDs via deep virtual Compton scattering (DVCS) with polarized targets, doubly-DVCS, deep virtual meson production, time-like Compton scattering, and so on. Our collaboration has submitted the pre-conceptual design report to JLab and successfully passed the Director’s Review in early 2015. Our collaborators are focusing on optimizing the detector system, finalizing the detector designs and proceeding on the detector R&D. We are looking forward to having the DOE Science Review in the near future.« less
  1. Duke University, Durham, NC
Publication Date:
OSTI Identifier:
Report Number(s):
JLAB-PHY-15-2143; DOE/OR/23177-3598
DOE Contract Number:
AC05-06OR23177; FG02- 03ER41231
Resource Type:
Resource Relation:
Journal Name: Proceedings of Science; Journal Volume: DIS2015; Conference: DIS 2015, April 27 - May 1, 2015, Southern Methodist University, Dallas, Texas
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States