A step-like rise in the4He(γ, pn)2H cross section near the pion-production threshold

K. Maruyama; K. Niki; Y. Sumi; T. Emura; I. Endo; S. Endo; H. Itoh; S. Kato; M. Koike; Kazushige Maeda; T. Maki; Y. Murata; C. Rangacharyulu; A. Sasaki; T. Suda; Y. Wada; K. Yoshida

doi:10.1016/S0370-2693(96)01658-9

A step-like rise in the⁴He(γ, pn)²H cross section near the pion-production threshold

K. Maruyama, K. Niki, Y. Sumi, T. Emura, I. Endo, S. Endo, H. Itoh, S. Kato, M. Koike, Kazushige Maeda, T. Maki, Y. Murata, C. Rangacharyulu, A. Sasaki, T. Suda, Y. Wada, K. Yoshida

Research Center for Electron Photon Science (ELPH)

Research output: Contribution to journal › Article › peer-review

Abstract

A kinematically complete⁴He(γ, pn)²H measurement was carried out in the photon energy (E_γ) range 145-425 MeV. The total cross section (σ_α) forms a prominent structure whose peak lies at Eγ ∼ 245 MeV (the pnd invariant mass of 3960 MeV/c²). The ratio σ_α/σ_d, where σ_dis the deuteron photodisintegration cross section, shows a step-like rise to a value of 6 at E_γ∼ 140 MeV.

Original language	English
Pages (from-to)	295-300
Number of pages	6
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	393
Issue number	3-4
DOIs	https://doi.org/10.1016/S0370-2693(96)01658-9
Publication status	Published - 1997 Feb 13

Keywords

He
Photodisintegration
Photon absorption
Step-like rise
pn pair
Δ resonance

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1016/S0370-2693(96)01658-9

Cite this

Maruyama, K., Niki, K., Sumi, Y., Emura, T., Endo, I., Endo, S., Itoh, H., Kato, S., Koike, M., Maeda, K., Maki, T., Murata, Y., Rangacharyulu, C., Sasaki, A., Suda, T., Wada, Y., & Yoshida, K. (1997). A step-like rise in the⁴He(γ, pn)²H cross section near the pion-production threshold. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 393(3-4), 295-300. https://doi.org/10.1016/S0370-2693(96)01658-9

Maruyama, K, Niki, K, Sumi, Y, Emura, T, Endo, I, Endo, S, Itoh, H, Kato, S, Koike, M, Maeda, K, Maki, T, Murata, Y, Rangacharyulu, C, Sasaki, A, Suda, T, Wada, Y & Yoshida, K 1997, 'A step-like rise in the⁴He(γ, pn)²H cross section near the pion-production threshold', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 393, no. 3-4, pp. 295-300. https://doi.org/10.1016/S0370-2693(96)01658-9

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title = "A step-like rise in the4He(γ, pn)2H cross section near the pion-production threshold",

abstract = "A kinematically complete4He(γ, pn)2H measurement was carried out in the photon energy (Eγ) range 145-425 MeV. The total cross section (σα) forms a prominent structure whose peak lies at Eγ ∼ 245 MeV (the pnd invariant mass of 3960 MeV/c2). The ratio σα/σd, where σdis the deuteron photodisintegration cross section, shows a step-like rise to a value of 6 at Eγ∼ 140 MeV.",

keywords = "He, Photodisintegration, Photon absorption, Step-like rise, pn pair, Δ resonance",

author = "K. Maruyama and K. Niki and Y. Sumi and T. Emura and I. Endo and S. Endo and H. Itoh and S. Kato and M. Koike and Kazushige Maeda and T. Maki and Y. Murata and C. Rangacharyulu and A. Sasaki and T. Suda and Y. Wada and K. Yoshida",

note = "Funding Information: We would like to express our sincere thanks to Prof. S. Yamada and Prof. H. Okuno for their encouragement of this work. We appreciate Dr. G. Garino for his critical comments to the manuscript. Thanks are due to the ES crew for their support in carrying out the experiment. Part of this work is financially supported by the Grant-in-Aid for Special Project Research on Meson Science of the Ministry of Education, Science, Sports and Culture of Japan.",

year = "1997",

month = feb,

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doi = "10.1016/S0370-2693(96)01658-9",

language = "English",

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pages = "295--300",

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T1 - A step-like rise in the4He(γ, pn)2H cross section near the pion-production threshold

AU - Maruyama, K.

AU - Niki, K.

AU - Sumi, Y.

AU - Emura, T.

AU - Endo, I.

AU - Endo, S.

AU - Itoh, H.

AU - Kato, S.

AU - Koike, M.

AU - Maeda, Kazushige

AU - Maki, T.

AU - Murata, Y.

AU - Rangacharyulu, C.

AU - Sasaki, A.

AU - Suda, T.

AU - Wada, Y.

AU - Yoshida, K.

N1 - Funding Information: We would like to express our sincere thanks to Prof. S. Yamada and Prof. H. Okuno for their encouragement of this work. We appreciate Dr. G. Garino for his critical comments to the manuscript. Thanks are due to the ES crew for their support in carrying out the experiment. Part of this work is financially supported by the Grant-in-Aid for Special Project Research on Meson Science of the Ministry of Education, Science, Sports and Culture of Japan.

PY - 1997/2/13

Y1 - 1997/2/13

N2 - A kinematically complete4He(γ, pn)2H measurement was carried out in the photon energy (Eγ) range 145-425 MeV. The total cross section (σα) forms a prominent structure whose peak lies at Eγ ∼ 245 MeV (the pnd invariant mass of 3960 MeV/c2). The ratio σα/σd, where σdis the deuteron photodisintegration cross section, shows a step-like rise to a value of 6 at Eγ∼ 140 MeV.

AB - A kinematically complete4He(γ, pn)2H measurement was carried out in the photon energy (Eγ) range 145-425 MeV. The total cross section (σα) forms a prominent structure whose peak lies at Eγ ∼ 245 MeV (the pnd invariant mass of 3960 MeV/c2). The ratio σα/σd, where σdis the deuteron photodisintegration cross section, shows a step-like rise to a value of 6 at Eγ∼ 140 MeV.

KW - He

KW - Photodisintegration

KW - Photon absorption

KW - Step-like rise

KW - pn pair

KW - Δ resonance

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JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

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