Photoproduction of a πN pair on nuclei and isobar configurations

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Abstract

A model of πN pair photoproduction on nuclei at high momentum transfer is presented. The A(γ, π N). B reaction amplitude is obtained by means of an extended impulse approximation, according to which the nuclear wave function includes delta-isobar components in addition to nucleon components. A one-particle transition operator is defined in terms of the two-body γ N→ π N and γδ → π N photoproduction amplitudes. Direct and exchange mechanisms of the nuclear photoproduction reaction are studied, and numerical estimates are made and presented of C12(γ,π-p)C11 and C12(γ,π+p)Be11 differential cross sections at photon incident energies in the δ(1232) resonance region.

Original language	English
Pages (from-to)	51-72
Number of pages	22
Journal	Nuclear Physics A
Volume	889
DOIs	https://doi.org/10.1016/j.nuclphysa.2012.07.003
Publication status	Published - 1 Sep 2012

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Keywords

Cross section
Isobar configurations
Pion photoproduction
Reaction A(γ, πN)B

ASJC Scopus subject areas

Nuclear and High Energy Physics

Cite this

Glavanakov, I. V., & Tabachenko, A. N. (2012). Photoproduction of a πN pair on nuclei and isobar configurations. Nuclear Physics A, 889, 51-72. https://doi.org/10.1016/j.nuclphysa.2012.07.003

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N2 - A model of πN pair photoproduction on nuclei at high momentum transfer is presented. The A(γ, π N). B reaction amplitude is obtained by means of an extended impulse approximation, according to which the nuclear wave function includes delta-isobar components in addition to nucleon components. A one-particle transition operator is defined in terms of the two-body γ N→ π N and γδ → π N photoproduction amplitudes. Direct and exchange mechanisms of the nuclear photoproduction reaction are studied, and numerical estimates are made and presented of C12(γ,π-p)C11 and C12(γ,π+p)Be11 differential cross sections at photon incident energies in the δ(1232) resonance region.

AB - A model of πN pair photoproduction on nuclei at high momentum transfer is presented. The A(γ, π N). B reaction amplitude is obtained by means of an extended impulse approximation, according to which the nuclear wave function includes delta-isobar components in addition to nucleon components. A one-particle transition operator is defined in terms of the two-body γ N→ π N and γδ → π N photoproduction amplitudes. Direct and exchange mechanisms of the nuclear photoproduction reaction are studied, and numerical estimates are made and presented of C12(γ,π-p)C11 and C12(γ,π+p)Be11 differential cross sections at photon incident energies in the δ(1232) resonance region.

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KW - Isobar configurations

KW - Pion photoproduction

KW - Reaction A(γ, πN)B

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Access to Document

10.1016/j.nuclphysa.2012.07.003