Details

Autor(en) / Beteiligte

• Amoroso, A
• Bianco, E
• Chelkov, G
• Chen, C
• Cheng, W S
• Chu, X
• de Boer, R E
• Deng, Z Y
• Du, S X
• Fang, S S
• Farinelli, R
• Feng, C Q
• Fritsch, M
• Goetzen, K
• Gramigna, S
• Gu, Y T
• Guan, Z L
• Han, T T
• Harris, F A
• Heinsius, F H H
• Heinz, C H
• Herold, C
• Hou, Z L
• Jackson, J
• Jaeger, S
• Jeong, J H
• Jiang, T J
• Jiao, J B
• Jiao, Z
• Kalantar-Nayestanaki, N
• Kiuchi, R
• Kupsc, A
• Lavezzi, L
• Lellmann, M
• Li, J W
• Li, K L
• Li, L J
• Li, W D
• Li, Y G
• Li, Z J
• Liang, C
• Liang, Y F
• Liu, F H
• Liu, H B
• Liu, W M
• Liu, X
• Lu, X L
• Luo, C L
• Luo, M X
• Lyu, X R
• Ma, J L
• Ma, Y
• Maggiora, M
• Mo, X H
• Ning, Z
• Nisar, S
• Niu, Y
• Pan, X
• Qi, F Z
• Qi, T Y
• Qin, L Q
• Qin, X S
• Rivetti, A
• Rolo, M
• Shen, C P
• Shen, X Y
• Song, J J
• Song, T Z
• Su, Y J
• Sun, G X
• Sun, W Y
• Tang, J
• Tao, L Y
• Wang, H P
• Wang, W
• Wang, W P
• Wang, Y F
• Wei, D H
• Wu, Y
• Xiang, T
• Xie, C
• Xu, Y C
• Yan, F
• Yan, W B
• Yang, Y F
• Ye, M H
• Zhai, X Y
• Zhang, J W
• Zhang, J X
• Zhang, Xuyan
• Zhang, Y T
• Zhang, Yan
• Zhang, Z Y
• Zhao, Ling
• Zhao, S J
• Zhao, Z G
• Zheng, Y H
• Zhu, Z A
• Zou, J H

Titel

Coupled-Channel Analysis of the χ_{c1}(3872) Line Shape with BESIII Data

Ist Teil von

• Physical review letters, 2024-04, Vol.132 (15), p.151903-151903

Ort / Verlag

United States

Erscheinungsjahr

2024

Quelle

American Physical Society

Beschreibungen/Notizen

• We perform a study of the χ_{c1}(3872) line shape using the data samples of e^{+}e^{-}→γχ_{c1}(3872), χ_{c1}(3872)→D^{0}D[over ¯]^{0}π^{0}, and π^{+}π^{-}J/ψ collected with the BESIII detector. The effects of the coupled channels and the off-shell D^{*0} are included in the parametrization of the line shape. The line shape mass parameter is obtained to be M_{X}=(3871.63±0.13_{-0.05}^{+0.06})  MeV. Two poles are found on the first and second Riemann sheets corresponding to the D^{*0}D[over ¯]^{0} branch cut. The pole location on the first sheet is much closer to the D^{*0}D[over ¯]^{0} threshold than the other, and is determined to be 7.04±0.15_{-0.08}^{+0.07}  MeV above the D^{0}D[over ¯]^{0}π^{0} threshold with an imaginary part -0.19±0.08_{-0.19}^{+0.14}  MeV.