Study of $e^+e^- \to γωJ/ψ$ and Observation of $X(3872) \to ωJ/ψ$
Creators: name: Ablikim, M
name: Achasov, M N
name: Adlarson, P
name: Ahmed, S.
name: Albrecht, M
name: Alekseev, M
name: Amoroso, A
name: An, F F
name: An, Q
name: Bai, Y
name: Bakina, O
name: Ferroli, R Baldini
name: Balossino, I
name: Ban, Y
name: Begzsuren, K
name: Bennett, J V
name: Berger, N
name: Bertani, M
name: Bettoni, D
name: Bianchi, F
name: Biernat, J
name: Bloms, J
name: Boyko, I
name: Briere, R A
name: Cai, H
name: Cai, X
name: Calcaterra, A
name: Cao, G F
name: Cao, N
name: Cetin, S A
name: Chai, J
name: Chang, J F
name: Chang, W L
name: Chelkov, G
name: Chen, D Y
name: Chen, G
name: Chen, H S
name: Chen, J C
name: Chen, M L
name: Chen, S J
name: Chen, Y B
name: Cheng, W
name: Cibinetto, G
name: Cossio, F
name: Cui, X F
name: Dai, H L
name: Dai, J P
name: Dai, X C
name: Dbeyssi, A
name: Dedovich, D
name: Deng, Z Y
name: Denig, A
name: Denysenko, I
name: Destefanis, M
name: De Mori, F
name: Ding, Y
name: Dong, C
name: Dong, J
name: Dong, L Y
name: Dong, M Y
name: Dou, Z L
name: Du, S X
name: Fan, J Z
name: Fang, J
name: Fang, S S
name: Fang, Y
name: Farinelli, R
name: Fava, L
name: Feldbauer, F
name: Felici, G
name: Feng, C Q
name: Fritsch, M
name: Fu, C D
name: Fu, Y
name: Gao, Q
name: Gao, X L
name: Gao, Y
name: Gao, Y
name: Gao, Y G
name: Gao, Z
name: Garillon, B.
name: Garzia, I
name: Gersabeck, E M
name: Gilman, A
name: Goetzen, K
name: Gong, L
name: Gong, W X
name: Gradl, W
name: Greco, M
name: Gu, L M
name: Gu, M H
name: Gu, S
name: Gu, Y T
name: Guo, A Q
name: Guo, L B
name: Guo, R P
name: Guo, Y P
name: Guskov, A
name: Han, S
name: Hao, X Q
name: Harris, F A
name: He, K L
name: Heinsius, F H
name: Held, T
name: Heng, Y K
name: Hou, Y R
name: Hou, Z L
name: Hu, H M
name: Hu, J F
name: Hu, T
name: Hu, Y
name: Huang, G S
name: Huang, J S
name: Huang, X T
name: Huang, X Z
name: Huesken, N
name: Hussain, T
name: Andersson, W Ikegami
name: Imoehl, W
name: Irshad, M
name: Ji, Q
name: Ji, Q P
name: Ji, X B
name: Ji, X L
name: Jiang, H L
name: Jiang, X S
name: Jiang, X Y
name: Jiao, J B
name: Jiao, Z
name: Jin, D P
name: Jin, S
name: Jin, Y
name: Johansson, T
name: Kalantar-Nayestanaki, N
name: Kang, X S
name: Kappert, R
name: Kavatsyuk, M
name: Ke, B C
name: Keshk, I K
name: Khoukaz, A
name: Kiese, P.
name: Kiuchi, R
name: Kliemt, R
name: Koch, L
name: Kolcu, O B
name: Kopf, B
name: Kuemmel, M
name: Kuessner, M
name: Kupsc, A
name: Kurth, M
name: Kurth, M G
name: Kühn, W
name: Lange, J S
name: Larin, P.
name: Lavezzi, L
name: Leithoff, H
name: Lenz, T
name: Li, C
name: Li, Cheng
name: Li, D M
name: Li, F
name: Li, F Y
name: Li, G
name: Li, H B
name: Li, H J
name: Li, J C
name: Li, J W
name: Li, Ke
name: Li, L K
name: Li, Lei
name: Li, P L
name: Li, P R
name: Li, Q Y
name: Li, W D
name: Li, W G
name: Li, X H
name: Li, X L
name: Li, X N
name: Li, X Q
name: Li, Z B
name: Li, Z Y
name: Liang, H
name: Liang, H
name: Liang, Y F
name: Liang, Y T
name: Liao, G R
name: Liao, L Z
name: Libby, J
name: Lin, C X
name: Lin, D X
name: Lin, Y J
name: Liu, B
name: Liu, B J
name: Liu, C X
name: Liu, D
name: Liu, D Y
name: Liu, F H
name: Liu, Fang
name: Liu, Feng
name: Liu, H B
name: Liu, H M
name: Liu, Huanhuan
name: Liu, Huihui
name: Liu, J B
name: Liu, J Y
name: Liu, K Y
name: Liu, Ke
name: Liu, L Y
name: Liu, Q
name: Liu, S B
name: Liu, T
name: Liu, X
name: Liu, X Y
name: Liu, Y B
name: Liu, Z A
name: Liu, Zhiqing
name: Long, Y. F
name: Lou, X C
name: Lu, H J
name: Lu, J D
name: Lu, J G
name: Lu, Y
name: Lu, Y P
name: Luo, C L
name: Luo, M X
name: Luo, P W
name: Luo, T
name: Luo, X L
name: Lusso, S
name: Lyu, X R
name: Ma, F C
name: Ma, H L
name: Ma, L L.
name: Ma, M M
name: Ma, Q M
name: Ma, X N
name: Ma, X X
name: Ma, X Y
name: Ma, Y M
name: Maas, F E
name: Maggiora, M
name: Maldaner, S
name: Malde, S
name: Malik, Q A
name: Mangoni, A
name: Mao, Y J
name: Mao, Z P
name: Marcello, S
name: Meng, Z X
name: Messchendorp, J G
name: Mezzadri, G
name: Min, J
name: Min, T J
name: Mitchell, R E
name: Mo, X H
name: Mo, Y J
name: Morales, C Morales
name: Muchnoi, N Yu
name: Muramatsu, H
name: Mustafa, A
name: Nakhoul, S
name: Nefedov, Y
name: Nerling, F
name: Nikolaev, I B
name: Ning, Z
name: Nisar, S
name: Niu, S L
name: Olsen, S L
name: Ouyang, Q
name: Pacetti, S
name: Pan, Y
name: Papenbrock, M
name: Patteri, P
name: Pelizaeus, M
name: Peng, H P
name: Peters, K
name: Pettersson, J
name: Ping, J L
name: Ping, R G
name: Pitka, A
name: Poling, R
name: Prasad, V
name: Qi, M
name: Qi, T Y
name: Qian, S
name: Qiao, C F
name: Qin, N
name: Qin, X P
name: Qin, X S
name: Qin, Z H
name: Qiu, J F
name: Qu, S Q
name: Rashid, K H
name: Redmer, C F
name: Richter, M
name: Rivetti, A
name: Rodin, V
name: Rolo, M
name: Rong, G
name: Rosner, Ch
name: Rump, M
name: Sarantsev, A
name: Savrié, M
name: Schoenning, K
name: Shan, W
name: Shan, X Y
name: Shao, M
name: Shen, C P
name: Shen, P X
name: Shen, X Y
name: Sheng, H Y
name: Shi, X
name: Shi, X D
name: Song, J J
name: Song, Q Q
name: Song, X Y
name: Sosio, S
name: Sowa, C
name: Spataro, S
name: Sui, F F.
name: Sun, G X
name: Sun, J F
name: Sun, L
name: Sun, S S
name: Sun, X H
name: Sun, Y J
name: Sun, Y K
name: Sun, Y Z
name: Sun, Z J
name: Sun, Z T
name: Tan, Y T
name: Tang, C J
name: Tang, G Y
name: Tang, X
name: Thoren, V
name: Tsednee, B
name: Uman, I
name: Wang, B
name: Wang, B L
name: Wang, C W
name: Wang, D Y
name: Wang, H H
name: Wang, K
name: Wang, L L
name: Wang, L S
name: Wang, M
name: Wang, M Z
name: Wang, Meng
name: Wang, P L
name: Wang, R M
name: Wang, W P
name: Wang, X
name: Wang, X F
name: Wang, X L
name: Wang, Y
name: Wang, Y
name: Wang, Y F
name: Wang, Z
name: Wang, Z G
name: Wang, Z Y
name: Wang, Zongyuan
name: Weber, T
name: Wei, D H
name: Weidenkaff, P
name: Wen, H W
name: Wen, S P
name: Wiedner, U
name: Wilkinson, G
name: Wolke, M
name: Wu, L H
name: Wu, L J
name: Wu, Z
name: Xia, L
name: Xia, Y
name: Xiao, S Y
name: Xiao, Y J
name: Xiao, Z J
name: Xie, Y G
name: Xie, Y H
name: Xing, T Y
name: Xiong, X A
name: Xiu, Q L
name: Xu, G F
name: Xu, L
name: Xu, Q J
name: Xu, W
name: Xu, X P
name: Yan, F
name: Yan, L
name: Yan, W B
name: Yan, W C
name: Yan, Y H
name: Yang, H J
name: Yang, H X
name: Yang, L
name: Yang, R X
name: Yang, S L
name: Yang, Y H
name: Yang, Y X
name: Yang, Yifan
name: Yang, Z Q
name: Ye, M
name: Ye, M H
name: Yin, J H
name: You, Z Y
name: Yu, B X
name: Yu, C X
name: Yu, J S
name: Yuan, C Z
name: Yuan, X Q
name: Yuan, Y
name: Yuncu, A
name: Zafar, A A
name: Zeng, Y
name: Zhang, B X
name: Zhang, B Y
name: Zhang, C C
name: Zhang, D H
name: Zhang, H H
name: Zhang, H Y
name: Zhang, J
name: Zhang, J L
name: Zhang, J Q
name: Zhang, J W
name: Zhang, J Y
name: Zhang, J Z
name: Zhang, K
name: Zhang, L
name: Zhang, S F
name: Zhang, T J
name: Zhang, X Y
name: Zhang, Y
name: Zhang, Y H
name: Zhang, Y T
name: Zhang, Yang
name: Zhang, Yao
name: Zhang, Yi
name: Zhang, Yu
name: Zhang, Z H
name: Zhang, Z P
name: Zhang, Z Y
name: Zhao, G
name: Zhao, J W
name: Zhao, J Y
name: Zhao, J Z
name: Zhao, Lei
name: Zhao, Ling
name: Zhao, M G
name: Zhao, Q
name: Zhao, S J
name: Zhao, T C
name: Zhao, Y B
name: Zhao, Z G
name: Zhemchugov, A
name: Zheng, B
name: Zheng, J P
name: Zheng, Y
name: Zheng, Y H
name: Zhong, B
name: Zhou, L
name: Zhou, L P
name: Zhou, Q
name: Zhou, X
name: Zhou, X K
name: Zhou, X R
name: Zhou, Xiaoyu
name: Zhou, Xu
name: Zhu, A N
name: Zhu, J
name: Zhu, J
name: Zhu, K
name: Zhu, K J
name: Zhu, S H
name: Zhu, W J
name: Zhu, X L
name: Zhu, Y C
name: Zhu, Y S
name: Zhu, Z A
name: Zhuang, J
name: Zou, B S
name: Zou, J H
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: We study the $e^+e^-\toγωJ/ψ$ process using $11.6 ~\rm fb^{-1}$ $e^+ e^-$ annihilation data taken at center-of-mass energies from $\sqrt{s}=4.008~\rm GeV$ to $4.600~\rm GeV$ with the BESIII detector at the BEPCII storage ring. The $X(3872)$ resonance is observed for the first time in the $ωJ/ψ$ system with a significance of more than $5σ$. The relative decay ratio of $X(3872)\toωJ/ψ$ and $π^+π^- J/ψ$ is measured to be $\mathcal{R}=1.6^{+0.4}_{-0.3}\pm0.2$, where the first error is statistical and the second systematic (the same hereafter). The $\sqrt{s}$-dependent cross section of $e^+e^-\toγX(3872)$ is also measured and investigated, and it can be described by a single Breit-Wigner resonance, referred to as the $Y(4200)$, with a mass of $4200.6^{+7.9}_{-13.3}\pm3.0~{\rm MeV}/c^2$ and a width of $115^{+38}_{-26}\pm12~{\rm MeV}$. In addition, to describe the $ωJ/ψ$ mass distribution above $3.9~\rm GeV/c^2$, we need at least one additional Breit-Wigner resonance, labeled as $X(3915)$, in the fit. The mass and width of the $X(3915)$ are measured to be $3926.4\pm2.2\pm1.2~\rm MeV/c^2$ and $3.8\pm7.5\pm2.6~\rm MeV$, or $3932.6\pm8.7\pm4.7~\rm MeV/c^2$ and $59.7\pm15.5\pm3.7~\rm MeV$, respectively, depending on the fit models. The resonant parameters of the $X(3915)$ agree with those of the $Y(3940)$ in $B\to KωJ/ψ$ and of the $X(3915)$ in $γγ\toωJ/ψ$ by the Belle and BABAR experiments within errors.