The contribution of pion absorption with two-nucleon emission to the pion-nucleus optical potential

Humberto Garcilazo; W. R. Gibbs

doi:10.1016/0375-9474(82)90372-4

The contribution of pion absorption with two-nucleon emission to the pion-nucleus optical potential

Humberto Garcilazo, W. R. Gibbs

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6 Citas (Scopus)

Resumen

Four terms in the pion-nucleus optical potential which arise from pion absorption with two nucleon emission are calculated using a model in which the nucleon is treated as a bound state of a pion and a nucleon. The contribution of these terms to the reaction cross section of carbon is considered. Two of the terms give rise to a negative reaction cross section, but it is shown that the sum of the four is positive definite. We find that the absorption reaction cross sections are very sensitive to the off-shell behavior of the free pion-nucleon T-matrix.

Idioma original	Inglés
Páginas (desde-hasta)	487-506
Número de páginas	20
Publicación	Nuclear Physics, Section A
Volumen	381
N.º	3
DOI	https://doi.org/10.1016/0375-9474(82)90372-4
Estado	Publicada - 21 jun. 1982
Publicado de forma externa	Sí

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abstract = "Four terms in the pion-nucleus optical potential which arise from pion absorption with two nucleon emission are calculated using a model in which the nucleon is treated as a bound state of a pion and a nucleon. The contribution of these terms to the reaction cross section of carbon is considered. Two of the terms give rise to a negative reaction cross section, but it is shown that the sum of the four is positive definite. We find that the absorption reaction cross sections are very sensitive to the off-shell behavior of the free pion-nucleon T-matrix.",

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T1 - The contribution of pion absorption with two-nucleon emission to the pion-nucleus optical potential

AU - Garcilazo, Humberto

AU - Gibbs, W. R.

PY - 1982/6/21

Y1 - 1982/6/21

N2 - Four terms in the pion-nucleus optical potential which arise from pion absorption with two nucleon emission are calculated using a model in which the nucleon is treated as a bound state of a pion and a nucleon. The contribution of these terms to the reaction cross section of carbon is considered. Two of the terms give rise to a negative reaction cross section, but it is shown that the sum of the four is positive definite. We find that the absorption reaction cross sections are very sensitive to the off-shell behavior of the free pion-nucleon T-matrix.

AB - Four terms in the pion-nucleus optical potential which arise from pion absorption with two nucleon emission are calculated using a model in which the nucleon is treated as a bound state of a pion and a nucleon. The contribution of these terms to the reaction cross section of carbon is considered. Two of the terms give rise to a negative reaction cross section, but it is shown that the sum of the four is positive definite. We find that the absorption reaction cross sections are very sensitive to the off-shell behavior of the free pion-nucleon T-matrix.

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U2 - 10.1016/0375-9474(82)90372-4

DO - 10.1016/0375-9474(82)90372-4

M3 - Artículo

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EP - 506

JO - Nuclear Physics, Section A

JF - Nuclear Physics, Section A

IS - 3

ER -

The contribution of pion absorption with two-nucleon emission to the pion-nucleus optical potential

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