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Title: Photo- and electroproduction of the hypertriton on {sup 3}He

Abstract

Differential cross sections of the photo- and electroproduction of the hypertriton have been calculated by utilizing modern nuclear wave functions and the elementary operator of KAON-MAID. It is found that a proper treatment of Fermi motion is essential for the two processes. Whereas the average momentum approximation can partly simulate the Fermi motion in the process, the 'frozen nucleon' assumption yields very different results, especially at lower energies. The Coulomb effect induced by the interaction between the positively charged kaon and the hypertriton is found to be negligible. The influence of higher partial waves is also found to be relatively small, in contrast to the finding of the previous work. Electroproduction is found to be much more sensitive to the off-shell assumption than is photoproduction. It is shown that the few available experimental data favor the assumption that the initial nucleon is off-shell and the final hyperon is on-shell. This seems to be reasonable, since the hyperon in the hypertriton is less bound than the nucleon in the initial {sup 3}He nucleus. The effect of the missing resonance D{sub 13}(1895) is more profound in the longitudinal cross sections. Excluding this resonance reduces the longitudinal cross sections by one order ofmore » magnitude but does not change the effects of various off-shell assumptions on the cross sections.« less

Authors:
 [1]
  1. Departemen Fisika, FMIPA, Universitas Indonesia, Depok 16424 (Indonesia)
Publication Date:
OSTI Identifier:
21192014
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 78; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevC.78.014004; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; APPROXIMATIONS; DIFFERENTIAL CROSS SECTIONS; ELECTROPRODUCTION; HELIUM 3; HYPERONS; KAONS; NUCLEONS; PARTIAL WAVES; PHOTOPRODUCTION; RESONANCE; TRITONS; WAVE FUNCTIONS

Citation Formats

Mart, T, and Ventel, B. I. S. van der. Photo- and electroproduction of the hypertriton on {sup 3}He. United States: N. p., 2008. Web. doi:10.1103/PHYSREVC.78.014004.
Mart, T, & Ventel, B. I. S. van der. Photo- and electroproduction of the hypertriton on {sup 3}He. United States. https://doi.org/10.1103/PHYSREVC.78.014004
Mart, T, and Ventel, B. I. S. van der. 2008. "Photo- and electroproduction of the hypertriton on {sup 3}He". United States. https://doi.org/10.1103/PHYSREVC.78.014004.
@article{osti_21192014,
title = {Photo- and electroproduction of the hypertriton on {sup 3}He},
author = {Mart, T and Ventel, B. I. S. van der},
abstractNote = {Differential cross sections of the photo- and electroproduction of the hypertriton have been calculated by utilizing modern nuclear wave functions and the elementary operator of KAON-MAID. It is found that a proper treatment of Fermi motion is essential for the two processes. Whereas the average momentum approximation can partly simulate the Fermi motion in the process, the 'frozen nucleon' assumption yields very different results, especially at lower energies. The Coulomb effect induced by the interaction between the positively charged kaon and the hypertriton is found to be negligible. The influence of higher partial waves is also found to be relatively small, in contrast to the finding of the previous work. Electroproduction is found to be much more sensitive to the off-shell assumption than is photoproduction. It is shown that the few available experimental data favor the assumption that the initial nucleon is off-shell and the final hyperon is on-shell. This seems to be reasonable, since the hyperon in the hypertriton is less bound than the nucleon in the initial {sup 3}He nucleus. The effect of the missing resonance D{sub 13}(1895) is more profound in the longitudinal cross sections. Excluding this resonance reduces the longitudinal cross sections by one order of magnitude but does not change the effects of various off-shell assumptions on the cross sections.},
doi = {10.1103/PHYSREVC.78.014004},
url = {https://www.osti.gov/biblio/21192014}, journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 1,
volume = 78,
place = {United States},
year = {2008},
month = {7}
}