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25 April 2024

» arxiv » hep-ex/9905052

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Nuclear Structure Functions in the Large x Large Q^2 Kinematic Region in Neutrino Deep Inelastic Scattering
CCFR collaboration: M. Vakili ; C.G. Arroyo ; P. Auchincloss ; P. de Barbaro ; A.O. Bazarko ; R.H. Bernstein ; A. Bodek ; T. Bolton ; H. Budd ; J. Conrad ; L. de Barbaro ; D.A. Harris ; R.A. Johnson ; J.H. Kim ; B.J. King ; T. Kinnel ; G. Koizumi ; S. Koutsoliotas ; M.J. Lamm ; W.C. Lefmann ; W. Marsh ; K.S. McFarland ; C. McNulty ; S.R. Mishra ; D. Naples ; P. Nienaber ; M.J. Oreglia ; L. Perera ; P.Z. Quintas ; A. Romosan ; W.K. Sakumoto ; B.A. Schumm ; F.J. Sciulli ; W.G. Seligman ; M.H. Shaevitz ; W.H. Smith ; P. Spentzouris ; R. Steiner ; E.G. Stern ; U.K. Yang ; J. Yu ;
Date:	27 May 1999
Journal:	Phys.Rev. D61 (2000) 052003
Subject:	hep-ex
Abstract:	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.
Source:	arXiv, hep-ex/9905052
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