Nuclear Structure Functions In The Large-X Large-Q(2) Kinematic Region In Neutrino Deep Inelastic Scattering

Data from the CCFR E770 neutrino deep inelastic scattering experiment at Fermilab contain events with a large Bjorken x (x > 0.7) and high momentum transfer [Q(2) > 50 (GeV/c)(2)]. A comparison of the data with a model based on no nuclear effects at large x shows a significant excess of events in the data. The addition of Fermi gas motion of the nucleons in the nucleus to the model does not explain the excess. Adding a higher momentum tail due to the formation of "quasi-deuterons" makes some improvement. An exponentially falling F-2 proportional to e (-s(x - x0)) at large x, predicted by "multi-quark clusters" and "few-nucleon correlations," can describe the data. A value of s = 8.3 +/- 0.7(stat) +/- 0.7(syst) yields the best agreement with the data.