The Gottfried Sum Rule Revisited

Not scheduled
WG1 Structure Functions and Parton Densities


Cynthia Keppel (Jefferson Lab)


Significant progress has recently been made, both experimentally and theoretically, in extracting the neutron structure function from deuterium data. Of particular note is the Jefferson Lab "BONUS" experiment, where a novel tagged proton spectator approach was employed to isolate the neutron target in electron-deuteron scattering. The BONUS data, combined with a wealth of precision deuterium data from Jefferson Lab, SLAC, and NMC, the latter now all with state-of-the-art nuclear corrections applied, has been used to re-evaluate the Gottfried Sum rule integrand F2n-F2p. Results of this analysis will be presented, and compared with the well-known results from NMC which lacked precision neutron extraction.

Primary author

Cynthia Keppel (Jefferson Lab)


Prof. Gabriel Niculescu (James Madison University) Prof. Ioana Niculescu (James Madison University) Simona Malace

Presentation Materials