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

被引:173
|
作者
Seely, J. [2 ]
Daniel, A. [3 ]
Gaskell, D. [4 ]
Arrington, J. [1 ]
Fomin, N. [5 ]
Solvignon, P. [1 ]
Asaturyan, R. [6 ]
Benmokhtar, F. [7 ]
Boeglin, W. [8 ]
Boillat, B. [9 ]
Bosted, P. [4 ]
Bruell, A. [4 ]
Bukhari, M. H. S. [3 ]
Christy, M. E. [10 ]
Clasie, B. [2 ]
Connell, S. [5 ]
Dalton, M. M. [5 ]
Day, D. [5 ]
Dunne, J. [11 ]
Dutta, D. [11 ,12 ]
El Fassi, L. [1 ]
Ent, R. [4 ]
Fenker, H. [4 ]
Filippone, B. W. [13 ]
Gao, H. [2 ,12 ]
Hill, C. [5 ]
Holt, R. J. [1 ]
Horn, T. [4 ,7 ]
Hungerford, E. [3 ]
Jones, M. K. [4 ]
Jourdan, J. [9 ]
Kalantarians, N. [3 ]
Keppel, C. E. [10 ]
Kiselev, D. [9 ]
Kotulla, M. [9 ]
Lee, C. [14 ]
Lung, A. F. [4 ]
Malace, S. [10 ]
Meekins, D. G. [4 ]
Mertens, T. [9 ]
Mkrtchyan, H. [6 ]
Navasardyan, T. [6 ]
Niculescu, G. [15 ]
Niculescu, I. [15 ]
Nomura, H. [16 ]
Okayasu, Y. [3 ,16 ]
Opper, A. K. [17 ]
Perdrisat, C. [18 ]
Potterveld, D. H. [1 ]
Punjabi, V. [19 ]
机构
[1] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA
[2] MIT, Nucl Sci Lab, Cambridge, MA 02139 USA
[3] Univ Houston, Houston, TX USA
[4] Thomas Jefferson Natl Lab, Newport News, VA USA
[5] Univ Virginia, Charlottesville, VA USA
[6] Yerevan Phys Inst, Yerevan 375036, Armenia
[7] Univ Maryland, College Pk, MD 20742 USA
[8] Florida Int Univ, Miami, FL 33199 USA
[9] Univ Basel, Basel, Switzerland
[10] Hampton Univ, Hampton, VA 23668 USA
[11] Mississippi State Univ, Jackson, MS USA
[12] Duke Univ, Triangle Univ Nucl Lab, Durham, NC USA
[13] CALTECH, Kellogg Radiat Lab, Pasadena, CA 91125 USA
[14] Univ Witwatersrand, Johannesburg, South Africa
[15] James Madison Univ, Harrisonburg, VA 22807 USA
[16] Tohoku Univ, Sendai, Miyagi 980, Japan
[17] Ohio Univ, Athens, OH 45701 USA
[18] Coll William & Mary, Williamsburg, VA USA
[19] Norfolk State Univ, Norfolk, VA USA
基金
美国国家科学基金会; 新加坡国家研究基金会;
关键词
INELASTIC ELECTRON-SCATTERING; DEPENDENCE;
D O I
10.1103/PhysRevLett.103.202301
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
New Jefferson Lab data are presented on the nuclear dependence of the inclusive cross section from H-2, He-3, He-4, Be-9 and C-12 for 0.3 < x < 0.9, Q(2)approximate to 3-6 GeV2. These data represent the first measurement of the EMC effect for He-3 at large x and a significant improvement for He-4. 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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页数:5
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