Author
G. Boyd
Bio: G. Boyd is an academic researcher from California Institute of Technology. The author has contributed to research in topics: Nuclear reaction & Photodisintegration. The author has an hindex of 4, co-authored 6 publications receiving 124 citations.
Papers
More filters
TL;DR: In this paper, the authors measured the differential cross section for two-body deuteron photodisintegration at θc.m.=90° and for photon energies between 0.8 and 1.6 GeV.
Abstract: We have measured the differential cross section for two-body deuteron photodisintegration at θc.m.=90° and for photon energies between 0.8 and 1.6 GeV. At energies above ≃ 1.2 GeV, the data appear to obey a simple scaling law predicted by constituent-counting rules assuming parton degrees of freedom for the deuteron and nucleons. Agreement with model calculations based on meson exchange or "reduced nuclear amplitudes" is discussed.
37 citations
TL;DR: The longitudinal response function, after correction for Coulomb distortion, is lower than quasifree-scattering-model predictions at the quasielastic peak and on the high-ω side.
Abstract: Inclusive electron-scattering cross sections have been measured for ^(56)Fe in the quasielastic region at electron energies between 0.9 and 4.3 GeV, at scattering angles of 15° and 85°. Longitudinal and transverse response functions at a q of 1.14 GeV/c have been extracted using a Rosenbluth separation. The experimental Coulomb sum has been obtained with aid of an extrapolation. The longitudinal response function, after correction for Coulomb distortion, is lower than quasifree-scattering-model predictions at the quasielastic peak and on the high-ω side.
33 citations
TL;DR: The differential cross section for the reaction 2H(γ,p)n has been measured at several center-of-mass angles and the energy dependence of the cross sections is consistent with predictions of scaling using counting rules for constituent quarks.
Abstract: The differential cross section for the reaction 2H(γ,p)n has been measured at several center-of-mass angles ranging from 50° to 143° for photon energies between 0.8 and 1.8 GeV. The experiment was performed at the SLAC-NPAS facility with the use of the 1.6 GeV/c spectrometer to detect the high energy protons produced by a bremsstrahlung beam directed at a liquid deuterium target. Contributions from concurrent disintegration by the residual electron beam were determined by measuring the proton yield without the Cu photon radiator. At angles not very far from 90°, the energy dependence of the cross sections is consistent with predictions of scaling using counting rules for constituent quarks. At least one theoretical calculation based on a meson-baryon picture of the reaction is able to reproduce the magnitude and energy dependence of the 90° cross section. The angular distribution exhibits a large enhancement at backward angles at the higher energies.
29 citations
TL;DR: Inclusive electron scattering cross sections for {sup 3,4}He have been measured and the ratio of the longitudinal to the transverse reduced response functions in the negative {ital y}.
Abstract: Inclusive electron scattering cross sections for {sup 3,4}He have been measured in the quasielastic region at electron energies between 0.9 and 4.3 GeV, and scattering angles of 15{degree} and 85{degree}. Longitudinal ({ital R}{sub {ital L}}) and transverse ({ital R}{sub {ital T}}) response functions have been extracted using a Rosenbluth separation at constant {vert bar}{bold q}{vert bar} of 1.050 GeV/{ital c}. The ratio of the longitudinal to the transverse reduced response functions in the negative {ital y} region reaches unity.
22 citations
TL;DR: In this article, the tantalizing problem of the quenching of the Coulomb sum rule observed in medium weight nuclei is investigated in light nuclei at high momentum transfer, and the ratio of the longitudinal to the transverse reduced response functions in the negative y region reaches unity.
3 citations
Cited by
More filters
CERN1
TL;DR: In this article, a statistical analysis of available data on the ratio of the nuclear structure functions F2 for different nuclei in the range from the deuteron to the lead was performed.
181 citations
TL;DR: A review of evidence on the properties of the A = 11 nuclei is given in this paper, with emphasis on the material leading to information about the structure of the a = 11 systems.
177 citations
TL;DR: In this article, a review on the field of inclusive quasielastic electron-nucleus scattering is presented, which includes the approach used to measure the data and includes a compilation of data available in numerical form.
Abstract: This paper presents a review on the field of inclusive quasielastic electron-nucleus scattering. It discusses the approach used to measure the data and includes a compilation of data available in numerical form. The theoretical approaches used to interpret the data are presented. A number of results obtained from the comparison between experiment and calculation are then reviewed. The analogies to, and differences from, other fields of physics exploiting quasielastic scattering from composite systems are pointed out.
164 citations
01 Jan 2014
TL;DR: An evaluation of A = 16-17 was published in Nuclear Physics A564 (1993), p. 1. as mentioned in this paper corrected some errors discovered after the article went to press.
Abstract: An evaluation of A = 16-17 was published in Nuclear Physics A564 (1993), p. 1. This version of A = 17 differs from the published version in that we have corrected some errors discovered after the article went to press. The introductio n and introductory tables have been omitted from this manuscript. Reference key numbers have been changed to the NNDC/TUNL format.
121 citations
TL;DR: In this article, the response of nucleons and complex nuclei to an external electromagnetic probe at intermediate and high energy is illustrated by considering both inclusive and semi-inclusive electron scattering.
121 citations