Upcoming Events

Neutron Structure at Large X

December 2, 2013 3:30PM to 4:30PM
Cynthia Keppel, Thomas Jefferson National Accelerator Facility
Building 203, Room R150
Physics Division Seminar
An impressive amount of high quality nucleon structure function data exists from hydrogen, deuterium, and heavier targets. However, the lack of a neutron target has made direct comparisons between the proton and neutron structure nearly impossible at large x, where nuclear effects become large. The behavior of the d quark as x approaches 1 is particularly sensitive to deuterium nuclear corrections.

The impact on the parton distribution functions (PDFs) from these effects have been evaluated within a global PDF analysis. The results will be discussed, as well as compared to results from the Barely Off-Shell Nucleon Structure (BONUS) Experiment. The BONUS experiment employed a radial time projection chamber in the CEBAF Large Acceptance Spectrometer in Hall B at Jefferson Lab. The novel detector observes spectator protons resulting from electron-deuteron interactions in coincidence with electrons.