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Author: Harvey Lee Lynch
Publisher:
ISBN:
Category :
Languages : en
Pages : 278
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Author: Harvey Lee Lynch
Publisher:
ISBN:
Category :
Languages : en
Pages : 278
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Author: David Evans Andrews
Publisher:
ISBN:
Category : Electrons
Languages : en
Pages : 362
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Author: Edward Clement Jones
Publisher:
ISBN:
Category : Electrons
Languages : en
Pages : 228
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Author: Larry W. Whitlow
Publisher:
ISBN:
Category : Electrons
Languages : en
Pages : 424
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 52
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The authors propose to measure the inclusive deep inelastic electron-nucleon scattering cross sections on hydrogen and deuterium. Cross sections will be measured in the range of momentum transfers Q{sub min}2 = 0.160 (GeV/c)2 and Q{sub max}2 = 160.0 (GeV/c)2, in the range of recoil hadronic mass squared of W{sub min}2 = 2 GeV2 and W{sub max}2 = 450 GeV2. The electromagnetic structure functions, [nu]W2(Q2, [nu]) and W1(Q2, [nu]), of both protons and neutrons will be measured and separated by well-known methods, in the highest possible unexplored FERMILAB kinematical regions. The high intensity Proton-West superconducting beam will be used to yield an electron beam of high purity, based on a synchrotron radiation compensated tuning technique. The electron beam will be used at 150 GeV (5 x 108 e{sup {+-}}/pulse), at 175 GeV (3.6 x 108 e{sup {+-}}/pulse) and at 250 GeV (1 x 108 e{sup {+-}}/pulse). The scattered electron will be detected with good acceptance, good resolution and excellent identification. The detector will be the E-192 apparatus with small additions. A simple self-calibration procedure is available, both in experiment and apparatus, removing beam-associated and target-associated background in the entire (Q2, W2) kinematical regions. Usually, interesting physics occurs where counting rates are small. This experiment will be completely trust-worthy in such regions because their apparatus provides excellent information on the tracking and identification of scattered electrons.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 203
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We report the final results from experiment E140, a recent deep inelastic electron-deuterium and electron-iron scattering experiment at SLAC. In addition, we present the results of a combined global analysis of all SLAC deep inelastic electron-hydrogen and electron-deuterium cross section measurements between 1970 and 1983. Data from seven earlier experiments are re-radiatively corrected and normalized to experiment E140. We report extractions of R(x, Q2) and F2(x, Q2) for hydrogen and deuterium over the entire SLAC kinematic range: .06(less-than or equal to) x (less-than or equal to).90 and 0.6(less-than or equal to) Q2 (less-than or equal to)30.0 (GeV2). We fine that R{sup p} = R{sup d}, as expected by QCD. Extracted values of R(x, Q2) are significantly larger than predictions based on QCD and on QCD with the inclusion of kinematic target mass terms. This difference indicates that dynamical higher twist effects may be important in the SLAC kinematic range. A best fit empirical model of R(x, Q2) is used to extract F2 from each cross section measurement. These F2 extractions are compared with F2 data from EMC and BCDMS. Agreement is observed with EMC when the EMC data are multiplied by 1.07. Agreement is observed with BCDMS over a limited range in x. The ratios of F2{sup d}/F2{sup p} are examined for Q2 dependence. We observe a significant negative slope for x (less-than or equal to) .6, and a significant positive slope above x> .7, in excellent agreement with predictions based on QCD with the inclusion of kinematic target mass terms. 111 refs., 40 figs., 34 tabs.
Author: Aaron Temkin
Publisher:
ISBN:
Category : Atomic hydrogen
Languages : en
Pages : 18
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Author: Harold Rieth Collard
Publisher:
ISBN:
Category :
Languages : en
Pages : 470
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Author: Igor Bray
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ISBN:
Category : Electrons
Languages : en
Pages :
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Author: L. W. Whitlow
Publisher:
ISBN:
Category : Deuterium
Languages : en
Pages : 193
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