Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
1999-05-27
Phys.Rev.D61:052003,2000
Physics
High Energy Physics
High Energy Physics - Experiment
4 pages, 4 figures, 1 table. Sibmitted to PRL
Scientific paper
10.1103/PhysRevD.61.052003
Data from the CCFR E770 Neutrino Deep Inelastic Scattering (DIS) experiment at Fermilab contain events with 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. 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 \propto e^-s(x-x_0) at large x, predicted by ``multi-quark clusters'' and ``few-nucleon correlations'', can describe the data. A value of s=8.3 \pm 0.7(stat.)\pm 0.7(sys.) yields the best agreement with the data.
Arroyo C. G.
Auchincloss P.
Barbaro L. de
Barbaro P. de
Bazarko Andrew O.
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