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Transverse asymmetry of individual $$gamma$$ rays in the $$^{139}$$La($$overrightarrow{n},gamma$$)$$^{140}$$La reaction

$$^{139}$$La($$overrightarrow{n},gamma$$)$$^{140}$$La反応における個々の$$gamma$$線の横非対称度

奥泉 舞桜*; Auton, C. J.*; 遠藤 駿典   ; 藤岡 宏之*; 広田 克也*; 猪野 隆*; 石崎 貢平*; 木村 敦   ; 北口 雅暁*; 古賀 淳*; 牧瀬 荘*; 新實 裕大*; 奥 隆之   ; 奥平 琢也*; 酒井 健二 ; 嶋 達志*; 清水 裕彦*; 多田 紘規*; 高田 秀佐*; 高橋 慎吾*; 谷 結以花*; 山本 知樹*; 吉川 大幹*; 吉岡 瑞樹*

Okuizumi, Mao*; Auton, C. J.*; Endo, Shunsuke; Fujioka, Hiroyuki*; Hirota, Katsuya*; Ino, Takashi*; Ishizaki, Kohei*; Kimura, Atsushi; Kitaguchi, Masaaki*; Koga, Jun*; Makise, So*; Niinomi, Yudai*; Oku, Takayuki; Okudaira, Takuya*; Sakai, Kenji; Shima, Tatsushi*; Shimizu, Hirohiko*; Tada, Hiroki*; Takada, Shusuke*; Takahashi, Shingo*; Tani, Yuika*; Yamamoto, Tomoki*; Yoshikawa, Hiromoto*; Yoshioka, Tamaki*

The observed enhancement of Parity Violation in the vicinity of p-wave compound nuclear resonances for a variety of medium-heavy nuclei can be understood using the sp-mixing model. The sp-mixing model predicts several neutron energy-dependent angular correlations between the spin and momentum of neutron and $$gamma$$-ray emitted from (n,$$gamma$$) reactions. In this work, the correlation term $$overrightarrow{sigma_textrm{n}}cdot(overrightarrow{k_textrm{n}}timesoverrightarrow{k_gamma})$$ in the $$^{139}$$La($$overrightarrow{n}$$,$$gamma$$)$$^{140}$$La$$^ast$$ reaction was measured precisely and a significant transverse asymmetry was found in the transition to the excited states of $$^{140}$$La.

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