Observation of $a^{0}_{0}(980)$-$f_{0}(980)$ Mixing

Autor: M, Ablikim, M N, Achasov, S, Ahmed, M, Albrecht, M, Alekseev, A, Amoroso, F F, An, Q, An, J Z, Bai, Y, Bai, O, Bakina, R, Baldini Ferroli, Y, Ban, D W, Bennett, J V, Bennett, N, Berger, M, Bertani, D, Bettoni, J M, Bian, F, Bianchi, E, Boger, I, Boyko, R A, Briere, H, Cai, X, Cai, O, Cakir, A, Calcaterra, G F, Cao, S A, Cetin, J, Chai, J F, Chang, G, Chelkov, G, Chen, H S, Chen, J C, Chen, M L, Chen, S J, Chen, X R, Chen, Y B, Chen, X K, Chu, G, Cibinetto, H L, Dai, J P, Dai, A, Dbeyssi, D, Dedovich, Z Y, Deng, A, Denig, I, Denysenko, M, Destefanis, F, De Mori, Y, Ding, C, Dong, J, Dong, L Y, Dong, M Y, Dong, O, Dorjkhaidav, Z L, Dou, S X, Du, P F, Duan, J, Fang, S S, Fang, X, Fang, Y, Fang, R, Farinelli, L, Fava, S, Fegan, F, Feldbauer, G, Felici, C Q, Feng, E, Fioravanti, M, Fritsch, C D, Fu, Q, Gao, X L, Gao, Y, Gao, Y G, Gao, Z, Gao, B, Garillon, I, Garzia, K, Goetzen, L, Gong, W X, Gong, W, Gradl, M, Greco, M H, Gu, S, Gu, Y T, Gu, A Q, Guo, L B, Guo, R P, Guo, Y P, Guo, Z, Haddadi, S, Han, X Q, Hao, F A, Harris, K L, He, X Q, He, F H, Heinsius, T, Held, Y K, Heng, T, Holtmann, Z L, Hou, C, Hu, H M, Hu, T, Hu, Y, Hu, G S, Huang, J S, Huang, S H, Huang, X T, Huang, X Z, Huang, Z L, Huang, T, Hussain, W, Ikegami Andersson, Q, Ji, Q P, Ji, X B, Ji, X L, Ji, X S, Jiang, X Y, Jiang, J B, Jiao, Z, Jiao, D P, Jin, S, Jin, Y, Jin, T, Johansson, A, Julin, N, Kalantar-Nayestanaki, X L, Kang, X S, Kang, M, Kavatsyuk, B C, Ke, T, Khan, A, Khoukaz, P, Kiese, R, Kliemt, L, Koch, O B, Kolcu, B, Kopf, M, Kornicer, M, Kuemmel, M, Kuhlmann, A, Kupsc, W, Kühn, J S, Lange, M, Lara, P, Larin, L, Lavezzi, H, Leithoff, C, Leng, C, Li, Cheng, Li, D M, Li, F, Li, F Y, Li, G, Li, H B, Li, H J, Li, J C, Li, Jin, Li, K, Li, K J, Li, Lei, Li, P L, Li, P R, Li, Q Y, Li, T, Li, W D, Li, W G, Li, X L, Li, X N, Li, X Q, Li, Z B, Li, H, Liang, Y F, Liang, Y T, Liang, G R, Liao, D X, Lin, B, Liu, B J, Liu, C X, Liu, D, Liu, F H, Liu, Fang, Liu, Feng, Liu, H B, Liu, H H, Liu, H M, Liu, J B, Liu, J Y, Liu, K, Liu, K Y, Liu, Ke, Liu, L D, Liu, P L, Liu, Q, Liu, S B, Liu, X, Liu, Y B, Liu, Z A, Liu, Zhiqing, Liu, Y F, Long, X C, Lou, H J, Lu, J G, Lu, Y, Lu, Y P, Lu, C L, Luo, M X, Luo, X L, Luo, X R, Lyu, F C, Ma, H L, Ma, L L, Ma, M M, Ma, Q M, Ma, T, Ma, X N, Ma, X Y, Ma, Y M, Ma, F E, Maas, M, Maggiora, Q A, Malik, Y J, Mao, Z P, Mao, S, Marcello, Z X, Meng, J G, Messchendorp, G, Mezzadri, J, Min, T J, Min, R E, Mitchell, X H, Mo, Y J, Mo, C, Morales Morales, G, Morello, N Yu, Muchnoi, H, Muramatsu, A, Mustafa, Y, Nefedov, F, Nerling, I B, Nikolaev, Z, Ning, S, Nisar, S L, Niu, X Y, Niu, S L, Olsen, Q, Ouyang, S, Pacetti, Y, Pan, M, Papenbrock, P, Patteri, M, Pelizaeus, J, Pellegrino, H P, Peng, K, Peters, J, Pettersson, J L, Ping, R G, Ping, A, Pitka, R, Poling, V, Prasad, H R, Qi, M, Qi, S, Qian, C F, Qiao, N, Qin, X S, Qin, Z H, Qin, J F, Qiu, K H, Rashid, C F, Redmer, M, Richter, M, Ripka, M, Rolo, G, Rong, Ch, Rosner, A, Sarantsev, M, Savrié, C, Schnier, K, Schoenning, W, Shan, M, Shao, C P, Shen, P X, Shen, X Y, Shen, H Y, Sheng, J J, Song, W M, Song, X Y, Song, S, Sosio, C, Sowa, S, Spataro, G X, Sun, J F, Sun, L, Sun, S S, Sun, X H, Sun, Y J, Sun, Y K, Sun, Y Z, Sun, Z J, Sun, Z T, Sun, C J, Tang, G Y, Tang, X, Tang, I, Tapan, M, Tiemens, B T, Tsednee, I, Uman, G S, Varner, B, Wang, B L, Wang, D, Wang, D Y, Wang, Dan, Wang, K, Wang, L L, Wang, L S, Wang, M, Wang, P, Wang, P L, Wang, W P, Wang, X F, Wang, Y, Wang, Y D, Wang, Y F, Wang, Y Q, Wang, Z, Wang, Z G, Wang, Z H, Wang, Z Y, Wang, T, Weber, D H, Wei, J H, Wei, P, Weidenkaff, S P, Wen, U, Wiedner, M, Wolke, L H, Wu, L J, Wu, Z, Wu, L, Xia, Y, Xia, D, Xiao, H, Xiao, Y J, Xiao, Z J, Xiao, X H, Xie, Y G, Xie, Y H, Xie, X A, Xiong, Q L, Xiu, G F, Xu, J J, Xu, L, Xu, Q J, Xu, Q N, Xu, X P, Xu, L, Yan, W B, Yan, W C, Yan, Y H, Yan, H J, Yang, H X, Yang, L, Yang, Y H, Yang, Y X, Yang, M, Ye, M H, Ye, J H, Yin, Z Y, You, B X, Yu, C X, Yu, J S, Yu, C Z, Yuan, Y, Yuan, A, Yuncu, A A, Zafar, Y, Zeng, Z, Zeng, B X, Zhang, B Y, Zhang, C C, Zhang, D H, Zhang, H H, Zhang, H Y, Zhang, J, Zhang, J L, Zhang, J Q, Zhang, J W, Zhang, J Y, Zhang, J Z, Zhang, K, Zhang, L, Zhang, S Q, Zhang, X Y, Zhang, Y, Zhang, Y H, Zhang, Y T, Zhang, Yu, Zhang, Z H, Zhang, Z P, Zhang, Z Y, Zhang, G, Zhao, J W, Zhao, J Y, Zhao, J Z, Zhao, Lei, Zhao, Ling, Zhao, M G, Zhao, Q, Zhao, S J, Zhao, T C, Zhao, Y B, Zhao, Z G, Zhao, A, Zhemchugov, B, Zheng, J P, Zheng, W J, Zheng, Y H, Zheng, B, Zhong, L, Zhou, X, Zhou, X K, Zhou, X R, Zhou, X Y, Zhou, J, Zhu, K, Zhu, K J, Zhu, S, Zhu, S H, Zhu, X L, Zhu, Y C, Zhu, Y S, Zhu, Z A, Zhu, J, Zhuang, B S, Zou, J H, Zou
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: INSPIRE-HEP
Physical review letters 121(2), 022001 (2018). doi:10.1103/PhysRevLett.121.022001
Popis: Physical review letters 121(2), 022001 (2018). doi:10.1103/PhysRevLett.121.022001
We report the first observation of $a^{0}_{0}(980)$-$f_{0}(980)$ mixing in the decays of $J/\psi\to\phi f_{0}(980)\to\phi a^{0}_{0}(980)\to\phi\eta\pi^{0}$ and $\chi_{c1}\to a^{0}_{0}(980)\pi^{0}\to f_{0}(980)\pi^{0}\to\pi^{+}\pi^{-}\pi^{0}$, using data samples of $1.31\times10^{9}$ $J/\psi$ events and $4.48\times10^{8}$ $\psi(3686)$ events accumulated with the BESIII detector. The signals of $f_{0}(980)\to a^{0}_{0}(980)$ and $a^{0}_{0}(980)\to f_{0}(980)$ mixing are observed at levels of statistical significance of $7.4\sigma$ and $5.5\sigma$, respectively. The corresponding branching fractions and mixing intensities are measured and the constraint regions on the coupling constants, $g_{a_{0}K^{+}K^{-}}$ and $g_{f_{0}K^{+}K^{-}}$, are estimated. The results improve the understanding of the nature of $a^{0}_{0}(980)$ and $f_{0}(980)$.
Published by APS, College Park, Md.
Databáze: OpenAIRE