Observation of S11(1535) resonance in nuclear medium via the 12C(γ,η) reaction

被引：50

作者：

Yorita, T

Yamazaki, H

Kinoshita, T

Okuda, T

Matsui, H

Kasagi, J

Suda, T

Itoh, K

Miyakawa, T

Okuno, H

Shimizu, H

Yoshida, HY

Kinashi, T

Maruyama, T

机构：

[1] Tohoku Univ, Nucl Sci Lab, Sendai, Miyagi 9820826, Japan

[2] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan

[3] Tokyo Univ Agr & Technol, Dept Appl Phys, Tokyo 1848588, Japan

[4] Yamagata Univ, Dept Phys, Yamagata 9908560, Japan

[5] Nihon Univ, Coll Bioresource Sci, Fujisawa, Kanagawa 2528510, Japan

来源：

PHYSICS LETTERS B | 2000年 / 476卷 / 3-4期

关键词：

D O I：

10.1016/S0370-2693(00)00176-3

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Properties of the S-11(1535) resonance in nuclear medium were investigated, through the C-12(gamma,eta) reaction for photon energies between 0.68 and 1.0 GeV, A broad resonance due to the the S-11 excitation in the carbon nucleus was clearly observed for the first time. The data were compared with calculations of the quantum molecular dynamics, and the observed shape being different from the elementary one is essentially explained by the medium effects such as the Fermi motion, the Pauli blocking and effects of N-eta and N-N * collisions. (C) 2000 Published by Elsevier Science B.V. All rights reserved.

引用

页码：226 / 232

页数：7

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