New measurements of the European muon collaboration 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. M. Dalton, D. Day, J. Dunne, D. DuttaL. 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, W. F. Vulcan, F. R. Wesselmann, S. A. Wood, J. Wright, L. Yuan, X. Zheng

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179 Citations (Scopus)


New Jefferson Lab data are presented on the nuclear dependence of the inclusive cross section from H2, He3, He4, Be9 and C12 for 0.3<x<0.9, Q23-6GeV2. These data represent the first measurement of the EMC effect for He3 at large x and a significant improvement for He4. 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.

Original languageEnglish
Article number202301
JournalPhysical Review Letters
Issue number20
Publication statusPublished - 13 Nov 2009

ASJC Scopus subject areas

  • General Physics and Astronomy


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