Search for the Δ++ component in the 12C ground state using the 12C(γ, π+ p) reaction

Аннотация

The differential cross section for the ¹²C(γ,π⁺ p) reaction has been measured in the Δ(1232) resonance region at high recoil momenta of the residual nuclear system. The data are analyzed under the assumption that the formation of the π⁺ p pairs may be interpreted as a γΔ⁺⁺ → π⁺ p process which takes place on a Δ⁺⁺ preexisting in the target nucleus. Estimates of the Δ⁺⁺ momentum distribution ρ_Δ ⁺⁺ (p̄) = 0.17 fm³ for a mean momentum p̄ = 300 ± 49 MeV/c as well as the number of Δ isobars per nucleon N_Δ = 0.017 were obtained for ¹²C.

Язык оригинала	Английский
Страницы (с-по)	55-72
Число страниц	18
Журнал	Nuclear Physics A
Том	705
Номер выпуска	1-2
DOI	https://doi.org/10.1016/S0375-9474(02)00625-5
Состояние	Опубликовано - 1 июл 2002

ASJC Scopus subject areas

Nuclear and High Energy Physics

Доступ к документу

10.1016/S0375-9474(02)00625-5

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Цитировать

Search for the Δ⁺⁺ component in the ¹²C ground state using the ¹²C(γ, π⁺ p) reaction. / Bystritsky, V. M.; Fix, A. I.; Glavanakov, I. V.; Grabmayr, P.; Krechetov, Yu F.; Saigushkin, O. K.; Schuvalov, E. N.; Tabachenko, A. N.

В: Nuclear Physics A, Том 705, № 1-2, 01.07.2002, стр. 55-72.

Результат исследований: Материалы для журнала › Статья › рецензирование

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title = "Search for the Δ++ component in the 12C ground state using the 12C(γ, π+ p) reaction",

abstract = "The differential cross section for the 12C(γ,π+ p) reaction has been measured in the Δ(1232) resonance region at high recoil momenta of the residual nuclear system. The data are analyzed under the assumption that the formation of the π+ p pairs may be interpreted as a γΔ++ → π+ p process which takes place on a Δ++ preexisting in the target nucleus. Estimates of the Δ++ momentum distribution ρΔ ++ ({\=p}) = 0.17 fm3 for a mean momentum {\=p} = 300 ± 49 MeV/c as well as the number of Δ isobars per nucleon NΔ = 0.017 were obtained for 12C.",

keywords = "σ(E,θ), C deduced Δ resonance component, E=420,500 MeV bremsstrahlung; measured Ep, NUCLEAR REACTIONSC(γ, pπ), pπ-coin",

author = "Bystritsky, {V. M.} and Fix, {A. I.} and Glavanakov, {I. V.} and P. Grabmayr and Krechetov, {Yu F.} and Saigushkin, {O. K.} and Schuvalov, {E. N.} and Tabachenko, {A. N.}",

year = "2002",

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doi = "10.1016/S0375-9474(02)00625-5",

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journal = "Nuclear Physics A",

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TY - JOUR

T1 - Search for the Δ++ component in the 12C ground state using the 12C(γ, π+ p) reaction

AU - Bystritsky, V. M.

AU - Fix, A. I.

AU - Glavanakov, I. V.

AU - Grabmayr, P.

AU - Krechetov, Yu F.

AU - Saigushkin, O. K.

AU - Schuvalov, E. N.

AU - Tabachenko, A. N.

PY - 2002/7/1

Y1 - 2002/7/1

N2 - The differential cross section for the 12C(γ,π+ p) reaction has been measured in the Δ(1232) resonance region at high recoil momenta of the residual nuclear system. The data are analyzed under the assumption that the formation of the π+ p pairs may be interpreted as a γΔ++ → π+ p process which takes place on a Δ++ preexisting in the target nucleus. Estimates of the Δ++ momentum distribution ρΔ ++ (p̄) = 0.17 fm3 for a mean momentum p̄ = 300 ± 49 MeV/c as well as the number of Δ isobars per nucleon NΔ = 0.017 were obtained for 12C.

AB - The differential cross section for the 12C(γ,π+ p) reaction has been measured in the Δ(1232) resonance region at high recoil momenta of the residual nuclear system. The data are analyzed under the assumption that the formation of the π+ p pairs may be interpreted as a γΔ++ → π+ p process which takes place on a Δ++ preexisting in the target nucleus. Estimates of the Δ++ momentum distribution ρΔ ++ (p̄) = 0.17 fm3 for a mean momentum p̄ = 300 ± 49 MeV/c as well as the number of Δ isobars per nucleon NΔ = 0.017 were obtained for 12C.

KW - σ(E,θ)

KW - C deduced Δ resonance component

KW - E=420,500 MeV bremsstrahlung; measured Ep

KW - NUCLEAR REACTIONSC(γ, pπ)

KW - pπ-coin

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U2 - 10.1016/S0375-9474(02)00625-5

DO - 10.1016/S0375-9474(02)00625-5

M3 - Article

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JO - Nuclear Physics A

JF - Nuclear Physics A

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