On the theory of low-energy pion-nucleus scattering

doi:10.1016/0370-2693(84)91719-2

Physics Letters B

Volume 137, Issues 5–6, 5 April 1984, Pages 299-302

https://doi.org/10.1016/0370-2693(84)91719-2 Get rights and content

Abstract

It is shown that the low-energy π−⁴He-scattering data can be described quantitatively by taking into account the contribution from the pion absorption channel in the framework of the unitary potential approach. The results indicate an approximate constancy of the absorptive parameters in the low-energy range from 0 to 50 MeV.

References (17)

A.W. Thomas et al.
Phys. Rep.
(1980)
M. Ericson et al.
Ann. Phys. (NY)
(1966)
F. Binon
Nucl. Phys.
(1978)
D.S. Koltun et al.
Phys. Rev.
(1966)
K. Stricker et al.
Phys. Rev.
(1979)
K. Stricker et al.
Phys. Rev.
(1980)
D.R. Gill
Phys. Rev.
(1982)
G. Fournier
Differential cross section for elastic helium isotope scattering from 25 to 65 MeV
Nucl. Phys.
(1983)
R. Mach et al.
Investigation of second-order optical potential for elastic π−⁴He scattering
J. Phys. G
(1982)

There are more references available in the full text version of this article.

Cited by (6)

Unitary scattering theory of low-energy pions by light nuclei
1989, Nuclear Physics, Section A
The unitary theory of pion-nucleus scattering based on the method of evolution of the system with respect to the coupling constant is presented. The consistency theory along with the unitarity provides a correct separation of the potential effects from the nonpotential (true pion absorption) effect. The basic equations are formulated for the direct calculation of the pion-nucleus phase shifts. An iterative solution of these equations that is rapidly convergent at low energies (below ~70 MeV) is considered. The results of a unified description of both the low-energy scattering data and the pionic atom data for ⁴He, ¹²C and ¹⁶O are presented. Strong influence of the pion absorption on the elastic scattering channel at low energies is demonstrated. It is shown that a unique set of parameters of the absorption correction fitted to pionic atom data provides a good quantitative description of the pion elastic scattering data at energies up to 50 MeV.
On the pion-nucleus dynamics at low energies
1988, Physics Letters B
Charge-symmetry-breaking effects from phase-shift analysis of elastic π± He scattering
1986, Physics Letters B
On determination of the 2p-energy level shift and width for π--4He atom
1990, Czechoslovak Journal of Physics
Unitary scattering theory of low energy pions on light nuclei
1986, Czechoslovak Journal of Physics
Test for charge symmetry breaking in elastic scattering of π±-mesons by4He
1986, Czechoslovak Journal of Physics

View full text

Article preview

Physics Letters B

Abstract

References (17)

Phys. Rep.

Ann. Phys. (NY)

Nucl. Phys.

Phys. Rev.

Phys. Rev.

Phys. Rev.

Phys. Rev.

Differential cross section for elastic helium isotope scattering from 25 to 65 MeV

Nucl. Phys.

Investigation of second-order optical potential for elastic π−⁴He scattering

J. Phys. G

Cited by (6)

Unitary scattering theory of low-energy pions by light nuclei

On the pion-nucleus dynamics at low energies

Charge-symmetry-breaking effects from phase-shift analysis of elastic π<sup>±</sup> He scattering

On determination of the 2p-energy level shift and width for π<sup>-</sup>-<sup>4</sup>He atom

Unitary scattering theory of low energy pions on light nuclei

Test for charge symmetry breaking in elastic scattering of π<sup>±</sup>-mesons by<sup>4</sup>He

On the theory of low-energy pion-nucleus scattering

Abstract

Phys. Rep.

Ann. Phys. (NY)

Nucl. Phys.

Phys. Rev.

Phys. Rev.

Phys. Rev.

Phys. Rev.

Differential cross section for elastic helium isotope scattering from 25 to 65 MeV

Nucl. Phys.

Investigation of second-order optical potential for elastic π−4He scattering

J. Phys. G

Investigation of second-order optical potential for elastic π−⁴He scattering