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

被引：175

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

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 20期

基金：

新加坡国家研究基金会; 美国国家科学基金会;

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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