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New Measurements of the European Muon Collaboration Effect in Very Light Nuclei

Seely, J. and Daniel, A. and Gaskell, D. and Arrington, J. and Fomin, N. and Solvignon, P. and Asaturyan, R. and Benmokhtar, F. and Boeglin, W. and Boillat, B. and Bosted, P. and Bruell, A. and Bukhari, M. H. S. and Christy, M. E. and Clasie, B. and Connell, S. and Dalton, M. M. and Day, D. and Dunne, J. and Dutta, D. and El Fassi, L. and Ent, R. and Fenker, H. and Filippone, B. W. and Gao, H. and Hill, C. and Holt, R. J. and Horn, T. and Hungerford, E. and Jones, M. K. and Jourdan, J. and Kalantarians, N. and Keppel, C. E. and Kiselev, D. and Kotulla, M. and Lee, C. and Lung, A. F. and Malace, S. and Meekins, D. G. and Mertens, T. and Mkrtchyan, H. and Navasardyan, T. and Niculescu, G. and Niculescu, I. and Nomura, H. and Okayasu, Y. and Opper, A. K. and Perdrisat, C. and Potterveld, D. H. and Punjabi, V. and Qian, X. and Reimer, P. E. and Roche, J. and Rodriguez, V. M. and Rondon, O. and Schulte, E. and Segbefia, E. and Slifer, K. and Smith, G. R. and Tadevosyan, V. and Tajima, S. and Tang, L. and Testa, G. and Trojer, R. and Tvaskis, V. and Vulcan, W. F. and Wesselmann, F. R. and Wood, S. A. and Wright, J. and Yuan, L. and Zheng, X. (2009) New Measurements of the European Muon Collaboration Effect in Very Light Nuclei. Physical Review Letters, 103 (20). p. 202301. ISSN 0031-9007.

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New Jefferson Lab data are presented on the nuclear dependence of the inclusive cross section from ^(2)H, ^(3)He, ^(4)He, ^(9)Be and ^(12)C for 0.3< x <0.9, Q^2 ≈ 3–6 GeV^2. These data represent the first measurement of the EMC effect for ^(3)He at large x and a significant improvement for ^(4)He. 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.

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Additional Information:© 2009 American Physical Society. Received 28 April 2009; revised 27 July 2009; published 13 November 2009. This work was supported in part by the NSF and DOE, including DOE Contract No. DE-AC02-06CH11357, DOE Contract No. DE-AC05-06OR23177 under which JSA, LLC operates JLab, and the South African National Research Foundation.
Funding AgencyGrant Number
Department of Energy (DOE)DE-AC02-06CH11357
Department of Energy (DOE)DE-AC05-06OR23177
South African National Research FoundationUNSPECIFIED
Issue or Number:20
Classification Code:PACS numbers: 13.60.Hb, 24.85.+p, 25.30.Fj
Record Number:CaltechAUTHORS:20091209-112752603
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Official Citation: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. 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, W. F. Vulcan, F. R. Wesselmann, S. A. Wood, J. Wright, L. Yuan, and X. Zheng, Phys. Rev. Lett. 103, 202301 (2009), DOI:10.1103/PhysRevLett.103.202301
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:16924
Deposited By: Jason Perez
Deposited On:10 Dec 2009 19:04
Last Modified:03 Oct 2019 01:19

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