The contribution of reflections to the Lorentz-Lorenz effect

Humberto Garcilazo

doi:10.1016/0375-9474(80)90353-X

The contribution of reflections to the Lorentz-Lorenz effect

Humberto Garcilazo

Escuela Superior de Física y Matemáticas (ESFM)

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Abstract

We use the static limit and delta isobar dominance to calculate the contribution to the optical potential of pionic atoms of those terms in which a pion or a rho meson are exchanged any number of times between two nucleons, which constitute the ρ² term of the Lorentz-Lorenz effect. By suppressing the spin and isospin degrees of freedom, we are able to express the Lorentz-Lorenz parameter ξ in analytical form. In the general case when we include fully the spin and isospin variables, we obtain the Lorentz-Lorenz parameter ξ in numerical form. Our results show that ξ can not be larger than one and more likely is close to zero.

Original language	English
Pages (from-to)	516-532
Number of pages	17
Journal	Nuclear Physics, Section A
Volume	345
Issue number	2
DOIs	https://doi.org/10.1016/0375-9474(80)90353-X
State	Published - 1980

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title = "The contribution of reflections to the Lorentz-Lorenz effect",

abstract = "We use the static limit and delta isobar dominance to calculate the contribution to the optical potential of pionic atoms of those terms in which a pion or a rho meson are exchanged any number of times between two nucleons, which constitute the ρ2 term of the Lorentz-Lorenz effect. By suppressing the spin and isospin degrees of freedom, we are able to express the Lorentz-Lorenz parameter ξ in analytical form. In the general case when we include fully the spin and isospin variables, we obtain the Lorentz-Lorenz parameter ξ in numerical form. Our results show that ξ can not be larger than one and more likely is close to zero.",

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AB - We use the static limit and delta isobar dominance to calculate the contribution to the optical potential of pionic atoms of those terms in which a pion or a rho meson are exchanged any number of times between two nucleons, which constitute the ρ2 term of the Lorentz-Lorenz effect. By suppressing the spin and isospin degrees of freedom, we are able to express the Lorentz-Lorenz parameter ξ in analytical form. In the general case when we include fully the spin and isospin variables, we obtain the Lorentz-Lorenz parameter ξ in numerical form. Our results show that ξ can not be larger than one and more likely is close to zero.

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DO - 10.1016/0375-9474(80)90353-X

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JO - Nuclear Physics, Section A

JF - Nuclear Physics, Section A

IS - 2

ER -

The contribution of reflections to the Lorentz-Lorenz effect

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