High sensitivity of a future search for effects of -odd/-odd interactions on the 0.75 eV -wave resonance in + forward transmission determined using a pulsed neutron beam

パルス中性子ビームを用いた+前方透過により 決定される0.75eV 波共鳴での-odd/-odd相互作用探索に向けた予測感度

中部 倫太郎*; Auton, C. J.*; 遠藤 駿典   ; 藤岡 宏之*; Gudkov, V.*; 広田 克也*; 井出 郁央*; 猪野 隆*; 石角 元志*; 神原 理*; 河村 しほり; 木村 敦   ; 北口 雅暁*; 小林 龍珠*; 岡村 崇弘*; 奥 隆之   ; 奥平 琢也*; 奥泉 舞桜*; Otero Munoz, J. G.*; Parker, J. D.*; 酒井 健二 ; 嶋 達志*; 清水 裕彦*; 篠原 武尚   ; Snow, W. M.*; 高田 秀佐*; 高橋 竜太*; 高橋 慎吾; 土川 雄介 ; 吉岡 瑞樹*

Nakabe, Rintaro*; Auton, C. J.*; Endo, Shunsuke; Fujioka, Hiroyuki*; Gudkov, V.*; Hirota, Katsuya*; Ide, Ikuo*; Ino, Takashi*; Ishikado, Motoyuki*; Kambara, Wataru*; Kawamura, Shihori; Kimura, Atsushi; Kitaguchi, Masaaki*; Kobayashi, Ryuju*; Okamura, Takahiro*; Oku, Takayuki; Okudaira, Takuya*; Okuizumi, Mao*; Otero Munoz, J. G.*; Parker, J. D.*; Sakai, Kenji; Shima, Tatsushi*; Shimizu, Hirohiko*; Shinohara, Takenao; Snow, W. M.*; Takada, Shusuke*; Takahashi, Ryuta*; Takahashi, Shingo; Tsuchikawa, Yusuke; Yoshioka, Tamaki*

Neutron transmission experiments can offer a new type of highly sensitive search for time-reversal invariance violating (TRIV) effects in nucleon-nucleon interactions via the same enhancement mechanism observed for large parity violating (PV) effects in neutron-induced compound nuclear processes. In these compound processes, the TRIV cross-section is given as the product of the PV cross-section, a spin-factor , and a ratio of TRIV and PV matrix elements. We determined to be 0.59 0.05 for La+n using both (n, ) spectroscopy and (+) transmission. This result quantifies for the first time the high sensitivity of the La 0.75 eV -wave resonance in a future search for -odd/-odd interactions in (+) forward transmission.