skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Determination of low-energy parameters of neutron-proton scattering on the basis of modern experimental data from partial-wave analyses

Abstract

The triplet and singlet low-energy parameters in the effective-range expansion for neutron-proton scattering are determined by using the latest experimental data on respective phase shifts from the SAID nucleon-nucleon database. The results differ markedly from the analogous parameters obtained on the basis of the phase shifts of the Nijmegen group and contradict the parameter values that are presently used as experimental ones. The values found with the aid of the phase shifts from the SAID nucleon-nucleon database for the total cross section for the scattering of zero-energy neutrons by protons, {sigma}{sub 0} = 20.426 b, and the neutron-proton coherent scattering length, f = -3.755 fm, agree perfectly with experimental cross-section values obtained by Houk, {sigma}{sub 0} = 20.436 {+-} 0.023 b, and experimental scattering-length values obtained by Houk and Wilson, f = -3.756 {+-} 0.009 fm, but they contradict cross-section values of {sigma}{sub 0} = 20.491 {+-} 0.014 b according to Dilg and coherent-scattering-length values of f = -3.7409 {+-} 0.0011 fm according to Koester and Nistler.

Authors:
;  [1]
  1. National Academy of Sciences of Ukraine, Bogolyubov Institute for Theoretical Physics (Ukraine)
Publication Date:
OSTI Identifier:
21075900
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Atomic Nuclei; Journal Volume: 70; Journal Issue: 4; Other Information: DOI: 10.1134/S1063778807040072; Copyright (c) 2007 Nauka/Interperiodica; Article Copyright (c) 2007 Pleiades Publishing, Ltd; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; COHERENT SCATTERING; NEUTRONS; PARTIAL WAVES; PHASE SHIFT; PROTON-NEUTRON INTERACTIONS; PROTONS; SCATTERING LENGTHS; TOTAL CROSS SECTIONS; TRIPLETS

Citation Formats

Babenko, V. A., E-mail: pet@online.com.ua, and Petrov, N. M.. Determination of low-energy parameters of neutron-proton scattering on the basis of modern experimental data from partial-wave analyses. United States: N. p., 2007. Web. doi:10.1134/S1063778807040072.
Babenko, V. A., E-mail: pet@online.com.ua, & Petrov, N. M.. Determination of low-energy parameters of neutron-proton scattering on the basis of modern experimental data from partial-wave analyses. United States. doi:10.1134/S1063778807040072.
Babenko, V. A., E-mail: pet@online.com.ua, and Petrov, N. M.. Sun . "Determination of low-energy parameters of neutron-proton scattering on the basis of modern experimental data from partial-wave analyses". United States. doi:10.1134/S1063778807040072.
@article{osti_21075900,
title = {Determination of low-energy parameters of neutron-proton scattering on the basis of modern experimental data from partial-wave analyses},
author = {Babenko, V. A., E-mail: pet@online.com.ua and Petrov, N. M.},
abstractNote = {The triplet and singlet low-energy parameters in the effective-range expansion for neutron-proton scattering are determined by using the latest experimental data on respective phase shifts from the SAID nucleon-nucleon database. The results differ markedly from the analogous parameters obtained on the basis of the phase shifts of the Nijmegen group and contradict the parameter values that are presently used as experimental ones. The values found with the aid of the phase shifts from the SAID nucleon-nucleon database for the total cross section for the scattering of zero-energy neutrons by protons, {sigma}{sub 0} = 20.426 b, and the neutron-proton coherent scattering length, f = -3.755 fm, agree perfectly with experimental cross-section values obtained by Houk, {sigma}{sub 0} = 20.436 {+-} 0.023 b, and experimental scattering-length values obtained by Houk and Wilson, f = -3.756 {+-} 0.009 fm, but they contradict cross-section values of {sigma}{sub 0} = 20.491 {+-} 0.014 b according to Dilg and coherent-scattering-length values of f = -3.7409 {+-} 0.0011 fm according to Koester and Nistler.},
doi = {10.1134/S1063778807040072},
journal = {Physics of Atomic Nuclei},
number = 4,
volume = 70,
place = {United States},
year = {Sun Apr 15 00:00:00 EDT 2007},
month = {Sun Apr 15 00:00:00 EDT 2007}
}