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24 April 2024

» arxiv » 0904.4448

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New measurements of the EMC effect in very light nuclei
J. Seely ; A. Daniel ; D. Gaskell ; J. Arrington ; N. Fomin ; P. Solvignon ; R. Asaturyan ; F. Benmokhtar ; W. Boeglin ; B. Boillat ; P. Bosted ; A. Bruell ; M. H. S. Bukhari ; M. E. Christy ; B. Clasie ; S. Connell ; M. Dalton ; D. Day ; J. Dunne ; D. Dutta ; L. El Fassi ; R. Ent ; H. Fenker ; B. W. Filippone ; H. Gao ; C. Hill ; R.J. Holt ; T. Horn ; E. Hungerford ; M.K. Jones ; J. Jourdan ; N. Kalantarians ; C. E. Keppel ; D. Kiselev ; M. Kotulla ; C. Lee ; A. F. Lung ; S. Malace ; D. G. Meekins ; T. Mertens ; H. Mkrtchyan ; T. Navasardyan ; G. Niculescu ; I. Niculescu ; H. Nomura ; Y. Okayasu ; A.K. Opper ; C. Perdrisat ; D. H. Potterveld ; V. Punjabi ; X. Qian ; P. E. Reimer ; J. Roche ; V. M. Rodriguez ; O. Rondon ; E. Schulte ; E. Segbefia ; K. Slifer ; G. R. Smith ; V. Tadevosyan ; S. Tajima ; L. Tang ; G. Testa ; R. Trojer ; V. Tvaskis ; A. Villano ; W. F. Vulcan ; F. R. Wesselmann ; S.A. Wood ; J. Wright ; L. Yuan ; X. Zheng ;
Date:	28 Apr 2009
Abstract:	New Jefferson Lab data are presented on the nuclear dependence of the inclusive cross section from 2H, 3He, 4He, 9Be and 12C for 0.3<x<0.9, Q^2 approximately 3-6 GeV^2. These data represent the first measurement of the EMC effect for 3He at large x and a significant improvement for 4He. The data do not support previous A-dependent or density-dependent fits to the EMC effect and suggest that the nuclear dependence of the quark distributions may depend on the local nuclear environment.
Source:	arXiv, 0904.4448
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