A study of the nuclear and kinematic dependence of R = σL/σT in deep inelastic electron scattering

S. Dasu; P. de Barbaro; R. C. Walker; L. W. Whitlow; J. Alster; R. Arnold; P. Bosted; D. Benton; A. Bodek; J. Button-Shafer; G. de Chambrier; L. Clogher; B. Debfbe; F. Dietrich; B. Filippone; R. Gearhart; H. Harada; R. Hicks; J. Jourdan; M. W. Krasny; K. Lang; A. Lung; R. Milner; R. Mckeown; A. Para; D. Potterveld; E. M. Riordan; S. E. Rock; Z. M. Szalata; K. Van Bibber

doi:10.1016/0375-9474(88)90869-X

A study of the nuclear and kinematic dependence of R = σ_L/σ_T in deep inelastic electron scattering

S. Dasu^*, P. de Barbaro, R. C. Walker, L. W. Whitlow, J. Alster, R. Arnold, P. Bosted, D. Benton, A. Bodek, J. Button-Shafer, G. de Chambrier, L. Clogher, B. Debfbe, F. Dietrich, B. Filippone, R. Gearhart, H. Harada, R. Hicks, J. Jourdan, M. W. KrasnyK. Lang, A. Lung, R. Milner, R. Mckeown, A. Para, D. Potterveld, E. M. Riordan, S. E. Rock, Z. M. Szalata, K. Van Bibber

^*Corresponding author for this work

School of Physics and Astronomy

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Abstract

We report preliminary results on the nuclear dependence of R = σ_L/σ_T in the deep inelastic electron scattering from deuterium, iron, and gold nuclei. In the x, Q² range of 0.2 ≤ x ≤ 0.5 and 1 ≤ Q² ≤ 5 (GeV/c)², the average R^Fe - R^D is 0.03 ± 0.02 (stat) ± 0.06 (syst); the final systematic errors are expected to be reduced to ± 0.03. The results indicate that there are no significant spin-0 constituents or higher twist effects in nuclei as compared to free nucleons. Models for the EMC effect with significant nuclear dependence of R are ruled out. The discrepancy, at low x, between CERN and SLAC results for the cross section ratio σ^Fe/σ^D cannot be attributed to a nuclear dependence of R as suggested by some authors. The kinematic variation of R^D with x and Q² in the SLAC energy is in agreement with the predictions of QCD with the addition of target mass effects.

Original language	English
Pages (from-to)	391-396
Number of pages	6
Journal	Nuclear Physics A
Volume	478
Issue number	C
DOIs	https://doi.org/10.1016/0375-9474(88)90869-X
State	Published - 1988

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Dasu, S., de Barbaro, P., Walker, R. C., Whitlow, L. W., Alster, J., Arnold, R., Bosted, P., Benton, D., Bodek, A., Button-Shafer, J., de Chambrier, G., Clogher, L., Debfbe, B., Dietrich, F., Filippone, B., Gearhart, R., Harada, H., Hicks, R., Jourdan, J., ... Van Bibber, K. (1988). A study of the nuclear and kinematic dependence of R = σ_L/σ_T in deep inelastic electron scattering. Nuclear Physics A, 478(C), 391-396. https://doi.org/10.1016/0375-9474(88)90869-X

@article{8a72141eda6445e39dca24519d9dfa9b,

title = "A study of the nuclear and kinematic dependence of R = σL/σT in deep inelastic electron scattering",

abstract = "We report preliminary results on the nuclear dependence of R = σL/σT in the deep inelastic electron scattering from deuterium, iron, and gold nuclei. In the x, Q2 range of 0.2 ≤ x ≤ 0.5 and 1 ≤ Q2 ≤ 5 (GeV/c)2, the average RFe - RD is 0.03 ± 0.02 (stat) ± 0.06 (syst); the final systematic errors are expected to be reduced to ± 0.03. The results indicate that there are no significant spin-0 constituents or higher twist effects in nuclei as compared to free nucleons. Models for the EMC effect with significant nuclear dependence of R are ruled out. The discrepancy, at low x, between CERN and SLAC results for the cross section ratio σFe/σD cannot be attributed to a nuclear dependence of R as suggested by some authors. The kinematic variation of RD with x and Q2 in the SLAC energy is in agreement with the predictions of QCD with the addition of target mass effects.",

author = "S. Dasu and {de Barbaro}, P. and Walker, {R. C.} and Whitlow, {L. W.} and J. Alster and R. Arnold and P. Bosted and D. Benton and A. Bodek and J. Button-Shafer and {de Chambrier}, G. and L. Clogher and B. Debfbe and F. Dietrich and B. Filippone and R. Gearhart and H. Harada and R. Hicks and J. Jourdan and Krasny, {M. W.} and K. Lang and A. Lung and R. Milner and R. Mckeown and A. Para and D. Potterveld and Riordan, {E. M.} and Rock, {S. E.} and Szalata, {Z. M.} and {Van Bibber}, K.",

year = "1988",

doi = "10.1016/0375-9474(88)90869-X",

language = "אנגלית",

volume = "478",

pages = "391--396",

journal = "Nuclear Physics A",

issn = "0375-9474",

publisher = "Elsevier",

number = "C",

}

Dasu, S, de Barbaro, P, Walker, RC, Whitlow, LW, Alster, J, Arnold, R, Bosted, P, Benton, D, Bodek, A, Button-Shafer, J, de Chambrier, G, Clogher, L, Debfbe, B, Dietrich, F, Filippone, B, Gearhart, R, Harada, H, Hicks, R, Jourdan, J, Krasny, MW, Lang, K, Lung, A, Milner, R, Mckeown, R, Para, A, Potterveld, D, Riordan, EM, Rock, SE, Szalata, ZM & Van Bibber, K 1988, 'A study of the nuclear and kinematic dependence of R = σ_L/σ_T in deep inelastic electron scattering', Nuclear Physics A, vol. 478, no. C, pp. 391-396. https://doi.org/10.1016/0375-9474(88)90869-X

TY - JOUR

T1 - A study of the nuclear and kinematic dependence of R = σL/σT in deep inelastic electron scattering

AU - Dasu, S.

AU - de Barbaro, P.

AU - Walker, R. C.

AU - Whitlow, L. W.

AU - Alster, J.

AU - Arnold, R.

AU - Bosted, P.

AU - Benton, D.

AU - Bodek, A.

AU - Button-Shafer, J.

AU - de Chambrier, G.

AU - Clogher, L.

AU - Debfbe, B.

AU - Dietrich, F.

AU - Filippone, B.

AU - Gearhart, R.

AU - Harada, H.

AU - Hicks, R.

AU - Jourdan, J.

AU - Krasny, M. W.

AU - Lang, K.

AU - Lung, A.

AU - Milner, R.

AU - Mckeown, R.

AU - Para, A.

AU - Potterveld, D.

AU - Riordan, E. M.

AU - Rock, S. E.

AU - Szalata, Z. M.

AU - Van Bibber, K.

PY - 1988

Y1 - 1988

N2 - We report preliminary results on the nuclear dependence of R = σL/σT in the deep inelastic electron scattering from deuterium, iron, and gold nuclei. In the x, Q2 range of 0.2 ≤ x ≤ 0.5 and 1 ≤ Q2 ≤ 5 (GeV/c)2, the average RFe - RD is 0.03 ± 0.02 (stat) ± 0.06 (syst); the final systematic errors are expected to be reduced to ± 0.03. The results indicate that there are no significant spin-0 constituents or higher twist effects in nuclei as compared to free nucleons. Models for the EMC effect with significant nuclear dependence of R are ruled out. The discrepancy, at low x, between CERN and SLAC results for the cross section ratio σFe/σD cannot be attributed to a nuclear dependence of R as suggested by some authors. The kinematic variation of RD with x and Q2 in the SLAC energy is in agreement with the predictions of QCD with the addition of target mass effects.

AB - We report preliminary results on the nuclear dependence of R = σL/σT in the deep inelastic electron scattering from deuterium, iron, and gold nuclei. In the x, Q2 range of 0.2 ≤ x ≤ 0.5 and 1 ≤ Q2 ≤ 5 (GeV/c)2, the average RFe - RD is 0.03 ± 0.02 (stat) ± 0.06 (syst); the final systematic errors are expected to be reduced to ± 0.03. The results indicate that there are no significant spin-0 constituents or higher twist effects in nuclei as compared to free nucleons. Models for the EMC effect with significant nuclear dependence of R are ruled out. The discrepancy, at low x, between CERN and SLAC results for the cross section ratio σFe/σD cannot be attributed to a nuclear dependence of R as suggested by some authors. The kinematic variation of RD with x and Q2 in the SLAC energy is in agreement with the predictions of QCD with the addition of target mass effects.

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U2 - 10.1016/0375-9474(88)90869-X

DO - 10.1016/0375-9474(88)90869-X

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AN - SCOPUS:12744262807

SN - 0375-9474

VL - 478

SP - 391

EP - 396

JO - Nuclear Physics A

JF - Nuclear Physics A

IS - C

ER -

A study of the nuclear and kinematic dependence of R = σ_L/σ_T in deep inelastic electron scattering

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