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Title: A combined analysis of SLAC experiments on deep inelastic e-p and e-d scattering

Abstract

We report recent work on the extraction of R = {sigma}{sub L}/{sigma}{sub T} and the structure function F{sub 2} over a large kinematic range, which is based on a reanalysis of deep inelastic {var_epsilon} {minus} p and {var_epsilon} {minus} d scattering cross sections measured at SLAC between 1970 and 1985. All these data were corrected for radiative effects using improved versions of external and internal radiative correction procedures. The data from seven individual experiments were normalized to those from the recent high-precision SLAC experiment E140. We find that R{sub p} = R{sub d}, as expected in QCD. The value of R is higher than predicted by QCD even when target-mass effects are included. This difference indicates that additional dynamical higher-twist effects may be present. The structure functions F{sub 2}p and F{sub 2}d were also extracted from the full data sets of normalized cross sections using an empirical fit to R. These structure functions were then compared with data from the CERN muon scattering experiments BCDMS and EMC. We find that our data are consistent with the EMC data, if the latter are multiplied by a normalization factor of 1.07. No single, uniform normalization factor can be applied to the BCDMSmore » data that will bring them into agreement with the SLAC data in the region of overlap.« less

Authors:
 [1]; ; ; ; ; ; ;  [2]; ; ; ; ; ; ; ; ;  [3];  [4]; ;  [5] more »; ;  [6]; ; ; ; ; ;  [7];  [8];  [9] « less
  1. Stanford Univ., CA (United States)
  2. Rochester Univ., NY (United States)
  3. American Univ., Washington, DC (United States)
  4. Tel Aviv Univ. (Israel)
  5. Massachusetts Univ., Amherst, MA (United States)
  6. Lawrence Livermore National Lab., CA (United States)
  7. California Inst. of Tech., Pasadena, CA (United States)
  8. Stanford Linear Accelerator Center, Menlo Park, CA (United States)
  9. Fermi National Accelerator Lab., Batavia, IL (United States)
Publication Date:
Research Org.:
Stanford Linear Accelerator Center, Menlo Park, CA (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10174211
Report Number(s):
SLAC-PUB-5100; UR-1119; ER-13065-586; CONF-890903-1
ON: DE92018151
DOE Contract Number:  
AC03-76SF00515
Resource Type:
Conference
Resource Relation:
Other Information: PBD: Aug 1989
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ELECTRON-PROTON INTERACTIONS; DEEP INELASTIC SCATTERING; ELECTRON-DEUTERON INTERACTIONS; CROSS SECTIONS; STRUCTURE FUNCTIONS; QUANTUM CHROMODYNAMICS; 662330; PHOTON AND CHARGED-LEPTON INTERACTIONS WITH HADRONS

Citation Formats

Whitlow, L W, Bodek, A, deBarbaro, P, Dasu, S, Harada, H, Krasny, M W, Lang, K, Riordan, E M, Rock, S, Arnold, R, Benton, D, Bosted, P, Button-Shafer, J, deChambrier, G, Clogher, L, Lung, A, Szalata, Z M, Alster, J, Debebe, B, Hicks, R, Dietrich, F, Van Bibber, K, Filippone, B, Jourdan, J, Milner, R, McKeown, R, Potterveld, D, Walker, R C, Gearhart, R, and Para, A. A combined analysis of SLAC experiments on deep inelastic e-p and e-d scattering. United States: N. p., 1989. Web.
Whitlow, L W, Bodek, A, deBarbaro, P, Dasu, S, Harada, H, Krasny, M W, Lang, K, Riordan, E M, Rock, S, Arnold, R, Benton, D, Bosted, P, Button-Shafer, J, deChambrier, G, Clogher, L, Lung, A, Szalata, Z M, Alster, J, Debebe, B, Hicks, R, Dietrich, F, Van Bibber, K, Filippone, B, Jourdan, J, Milner, R, McKeown, R, Potterveld, D, Walker, R C, Gearhart, R, & Para, A. A combined analysis of SLAC experiments on deep inelastic e-p and e-d scattering. United States.
Whitlow, L W, Bodek, A, deBarbaro, P, Dasu, S, Harada, H, Krasny, M W, Lang, K, Riordan, E M, Rock, S, Arnold, R, Benton, D, Bosted, P, Button-Shafer, J, deChambrier, G, Clogher, L, Lung, A, Szalata, Z M, Alster, J, Debebe, B, Hicks, R, Dietrich, F, Van Bibber, K, Filippone, B, Jourdan, J, Milner, R, McKeown, R, Potterveld, D, Walker, R C, Gearhart, R, and Para, A. 1989. "A combined analysis of SLAC experiments on deep inelastic e-p and e-d scattering". United States. https://www.osti.gov/servlets/purl/10174211.
@article{osti_10174211,
title = {A combined analysis of SLAC experiments on deep inelastic e-p and e-d scattering},
author = {Whitlow, L W and Bodek, A and deBarbaro, P and Dasu, S and Harada, H and Krasny, M W and Lang, K and Riordan, E M and Rock, S and Arnold, R and Benton, D and Bosted, P and Button-Shafer, J and deChambrier, G and Clogher, L and Lung, A and Szalata, Z M and Alster, J and Debebe, B and Hicks, R and Dietrich, F and Van Bibber, K and Filippone, B and Jourdan, J and Milner, R and McKeown, R and Potterveld, D and Walker, R C and Gearhart, R and Para, A},
abstractNote = {We report recent work on the extraction of R = {sigma}{sub L}/{sigma}{sub T} and the structure function F{sub 2} over a large kinematic range, which is based on a reanalysis of deep inelastic {var_epsilon} {minus} p and {var_epsilon} {minus} d scattering cross sections measured at SLAC between 1970 and 1985. All these data were corrected for radiative effects using improved versions of external and internal radiative correction procedures. The data from seven individual experiments were normalized to those from the recent high-precision SLAC experiment E140. We find that R{sub p} = R{sub d}, as expected in QCD. The value of R is higher than predicted by QCD even when target-mass effects are included. This difference indicates that additional dynamical higher-twist effects may be present. The structure functions F{sub 2}p and F{sub 2}d were also extracted from the full data sets of normalized cross sections using an empirical fit to R. These structure functions were then compared with data from the CERN muon scattering experiments BCDMS and EMC. We find that our data are consistent with the EMC data, if the latter are multiplied by a normalization factor of 1.07. No single, uniform normalization factor can be applied to the BCDMS data that will bring them into agreement with the SLAC data in the region of overlap.},
doi = {},
url = {https://www.osti.gov/biblio/10174211}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Aug 01 00:00:00 EDT 1989},
month = {Tue Aug 01 00:00:00 EDT 1989}
}

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