Antiproton-nucleus potentials from global fits to antiprotonic X-rays and radiochemical data

Eli Friedman; A. Gal; J. Mareš

doi:10.1016/j.nuclphysa.2005.08.001

Antiproton-nucleus potentials from global fits to antiprotonic X-rays and radiochemical data

Eli Friedman^*, A. Gal, J. Mareš

^*Corresponding author for this work

Racah Institute of Physics

Research output: Contribution to journal › Article › peer-review

63 Scopus citations

Abstract

We report on global fits of optical-model parameters to 90 data points for p̄ X-rays and 17 data points of radiochemical data put together. By doing separate fits to the two kinds of data it is possible to determine phenomenologically the radial region where the absorption of antiprotons takes place and to obtain neutron densities which represent the average behaviour over the periodic table. A finite-range attractive and absorptive p̄-nuclear isoscalar potential fits the data well. Self-consistent dynamical calculations within the RMF model demonstrate that the polarization of the nucleus by the atomic antiproton is negligible.

Original language	English
Pages (from-to)	283-295
Number of pages	13
Journal	Nuclear Physics A
Volume	761
Issue number	3-4
DOIs	https://doi.org/10.1016/j.nuclphysa.2005.08.001
State	Published - 14 Nov 2005

Keywords

RMF calculations
p̄ X-rays
p̄ single-nucleon absorption
p̄-nuclear interaction

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10.1016/j.nuclphysa.2005.08.001

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abstract = "We report on global fits of optical-model parameters to 90 data points for {\=p} X-rays and 17 data points of radiochemical data put together. By doing separate fits to the two kinds of data it is possible to determine phenomenologically the radial region where the absorption of antiprotons takes place and to obtain neutron densities which represent the average behaviour over the periodic table. A finite-range attractive and absorptive {\=p}-nuclear isoscalar potential fits the data well. Self-consistent dynamical calculations within the RMF model demonstrate that the polarization of the nucleus by the atomic antiproton is negligible.",

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AU - Gal, A.

AU - Mareš, J.

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Y1 - 2005/11/14

N2 - We report on global fits of optical-model parameters to 90 data points for p̄ X-rays and 17 data points of radiochemical data put together. By doing separate fits to the two kinds of data it is possible to determine phenomenologically the radial region where the absorption of antiprotons takes place and to obtain neutron densities which represent the average behaviour over the periodic table. A finite-range attractive and absorptive p̄-nuclear isoscalar potential fits the data well. Self-consistent dynamical calculations within the RMF model demonstrate that the polarization of the nucleus by the atomic antiproton is negligible.

AB - We report on global fits of optical-model parameters to 90 data points for p̄ X-rays and 17 data points of radiochemical data put together. By doing separate fits to the two kinds of data it is possible to determine phenomenologically the radial region where the absorption of antiprotons takes place and to obtain neutron densities which represent the average behaviour over the periodic table. A finite-range attractive and absorptive p̄-nuclear isoscalar potential fits the data well. Self-consistent dynamical calculations within the RMF model demonstrate that the polarization of the nucleus by the atomic antiproton is negligible.

KW - RMF calculations

KW - p̄ X-rays

KW - p̄ single-nucleon absorption

KW - p̄-nuclear interaction

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ER -

Antiproton-nucleus potentials from global fits to antiprotonic X-rays and radiochemical data

Abstract

Keywords

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