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Strong and Weak CP Tests in Sequential Decays of Polarized Σ^{0} Hyperons.

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成果类型:
期刊论文
作者:
Ablikim, M;Achasov, M N;Adlarson, P;Afedulidis, O;Ai, X C;...
作者机构:
[Sun, Z Q; Wen, S P; Hou, G Y; Liang, H; Dai, H L; Yuan, C Z; Zhao, G; Xu, W; Zhao, L; Xiao, S Y; Ma, Q M; Lou, X C; Hou, X T; Zhang, P; Zhang, Y; Tang, G Y; Liu, F; Batozskaya, V; Liu, P L; Wang, X N; Xiang, B H; Zhang, Z D; Cao, G F; Sun, H K; Yan, X Q; Wang, Y F; Kiuchi, R; Li, Q M; Wang, Y Q; Sun, Y Z; Zhang, J Z; Zhang, J W; Zhang, J Y; Zhang, Z H; Han, T T; Yang, T; Liu, C X; Mo, X H; Hu, Y; Fang, Y Q; Hu, T; Song, W M; Zhu, Z A; Wu, Z; Zheng, W J; Chang, J F; Yuan, Y; Deng, Z Y; Lu, J G; Yu, G; Hu, H M; Zheng, J P; Zeng, Y J; Ma, R Q; Ouyang, Q; Fang, W X; Chen, T; Yuan, S C; Fu, Y W; Rong, G; Chen, G; Ding, B; Liu, B J; Zhu, K J; Hou, Z L; Ablikim, M; Xu, C F; Cai, X; Li, L K; Li, L J; Ma, H L; Qiu, J F; Jiang, D; Ma, X T; Ma, X Y; Lu, Y P; Heng, Y K; Qin, Z H; Fang, S S; Wang, B; Sun, S S; Wang, K; Ping, R G; Du, M C; Wang, Z; Liu, H M; Liao, Y P; Zhang, S H; Mao, Z P; Yin, J H; Yu, B X; Liu, H H; Gong, W X; Kui, X; Lu, Z H; Chen, M L; Zhu, K; Chen, Z Y; Ji, X L; Zhang, B X; Ji, X B; Zhang, B L; Guan, C Y; Jing, M Q; Li, K; Li, G; Shi, J Y; Li, F; Lin, T; Zhang, A Q; Li, X; Li, H B; Lu, X L; Xu, G F; Chen, X T; Yang, H X; Gu, M H; Wang, Z Y; Zhang, Y H; Zou, J H; Li, X Y; Wu, L H; Wu, L J; Zhang, H Q; Zhou, L P; Chen, H S; Shao, L G; Fu, C D; Zhang, H C; Zhao, J Y; Zhao, J Z; Xing, T Y; Yang, Y F; Li, W D; Li, W G; He, K L; Ma, M M; Qi, F Z; Qian, S; Yang, Y X; Zhang, X M; Zhang, H Y; Zhao, Y B; Chen, Y B; Sun, G X; Wang, L L; Ning, Z; Huang, Y P; Ma, J L; Dong, L Y; Luo, X L; Jiang, X S; Fang, Y; Fang, J; Ye, M; Shen, X Y; Dong, M Y; Cao, N; Miao, H; Shi, X; Ji, Q; Wu, J F; Liu, Z A; Ji, W; Shen, H F; Xie, Y G; Dong, J; Liu, J Y] Institute of High Energy Physics, Beijing 100049, People's Republic of China
[Achasov, M N; Muchnoi, N Yu; Nikolaev, I B] Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia
[Adlarson, P; Schoenning, K; Thoren, V; Kupsc, A; Wolke, M; Johansson, T] Uppsala University, Box 516, SE-75120 Uppsala, Sweden
[Fritsch, M; Heinsius, F H; Wiedner, U; Wollenberg, L; Feldbauer, F; Hölzken, F; Afedulidis, O; Holtmann, T; Hanisch, F; Pelizaeus, M; de Boer, R E; Kopf, B; Kuessner, M] Bochum Ruhr-University, D-44780 Bochum, Germany
[Li, D M; Liu, Y; Zhang, H; Zhang, J; Du, S X; Yu, Y C; Yan, W C; Ai, X C; Zhao, S J; Ke, B C; Zhang, Y T; Ge, L; Qiao, X K] Zhengzhou University, Zhengzhou 450001, People's Republic of China
语种:
英文
期刊:
PHYSICAL REVIEW LETTERS
ISSN:
0031-9007
年:
2024
卷:
133
期:
10
页码:
101902
机构署名:
本校为其他机构
摘要:
The J/ψ, ψ(3686)→Σ^{0}Σ[over ¯]^{0} processes and subsequent decays are studied using the world's largest J/ψ and ψ(3686) data samples collected with the BESIII detector. The parity-violating decay parameters of the decays Σ^{0}→Λγ and Σ[over ¯]^{0}→Λ[over ¯]γ, α_{Σ^{0}}=-0.0017±0.0021±0.0018 and α[over ¯]_{Σ^{0}}=0.0021±0.0020±0.0022, are measured for the first time. The strong CP symmetry is tested in the decays of the Σ^{0} hyperons for the first time by measuring the asymmetry A_{CP}^{Σ}=α_{Σ^{0}}+α[over ¯]_...

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