Observation of a charged charmoniumlike structure in e+ e- → (D* D*)± π∓ at √s = 4.26 GeV.

Ablikim M,Achasov M N,Albayrak O,Ambrose D J,An F F,An Q,Bai J Z,Baldini Ferroli R,Ban Y,Becker J,Bennett J V,Bertani M,Bian J M,Boger E,Bondarenko O,Boyko I,Braun S,Briere R A,Bytev V,Cai H,Cai X,Cakir O,Calcaterra A,Cao G F,Cetin S A,Chang J F,Chelkov G,Chen G, Chen H S, Chen J C,Chen M L, Chen S J,Chen X R, Chen Y B,Cheng H P,Chu Y P,Cronin-Hennessy D,Dai H L,Dai J P,Dedovich D,Deng Z Y,Denig A,Denysenko I,Destefanis M,Ding W M,Ding Y,Dong L Y,Dong M Y,Du S X,Fang J,Fang S S,Fava L,Feng C Q,Friedel P,Fu C D,Fu J L,Fuks O,Gao Y,Geng C,Goetzen K,Gong W X,Gradl W,Greco M,Gu M H,Gu Y T,Guan Y H,Guo A Q,Guo L B,Guo T,Guo Y P,Han Y L,Harris F A,He K L,He M,He Z Y,Held T,Heng Y K,Hou Z L,Hu C,Hu H M,Hu J F,Hu T,Huang G M,Huang G S,Huang J S,Huang L,Huang X T, Huang Y,Hussain T,Ji C S,Ji Q,Ji Q P,Ji X B,Ji X L,Jiang L L,Jiang X S,Jiao J B,Jiao Z,Jin D P,Jin S,Jing F F,Kalantar-Nayestanaki N,Kavatsyuk M,Kloss B,Kopf B,Kornicer M,Kuehn W,Lai W,Lange J S,Lara M,Larin P,Leyhe M,Li C H,Li Cheng,Li Cui,Li D M,Li F,Li G,Li H B,Li J C,Li K,Li Lei,Li P R,Li Q J,Li W D,Li W G,Li X L,Li X N,Li X Q,Li X R,Li Z B,Liang H,Liang Y F,Liang Y T,Liao G R,Liao X T,Lin D X, Liu B J,Liu C L,Liu C X,Liu F H,Liu Fang,Liu Feng, Liu H,Liu H B, Liu H H,Liu H M, Liu H W, Liu J P,Liu K,Liu K Y,Liu L D,Liu P L,Liu Q,Liu S B,Liu X,Liu Y B,Liu Z A,Liu Zhiqiang,Liu Zhiqing,Loehner H,Lou X C,Lu G R,Lu H J,Lu J G,Lu X R,Lu Y P,Luo C L,Luo M X,Luo T,Luo X L,Lv M,Ma F C,Ma H L,Ma Q M,Ma S,Ma T,Ma X Y,Maas F E,Maggiora M,Malik Q A,Mao Y J,Mao Z P,Messchendorp J G,Min J,Min T J,Mitchell R E,Mo X H,Moeini H,Morales Morales C,Moriya K,Muchnoi N Yu,Muramatsu H,Nefedov Y,Nikolaev I B,Ning Z,Olsen S L,Ouyang Q,Pacetti S,Park J W,Pelizaeus M,Peng H P,Peters K,Ping J L,Ping R G,Poling R,Prencipe E,Qi M,Qian S,Qiao C F,Qin L Q,Qin X S,Qin Y,Qin Z H,Qiu J F,Rashid K H,Redmer C F,Rong G,Ruan X D,Sarantsev A,Shao M,Shen C P,Shen X Y,Sheng H Y,Shepherd M R,Song W M, Song X Y,Spataro S,Spruck B,Sun D H,Sun G X,Sun J F,Sun S S,Sun Y J,Sun Y Z,Sun Z J,Sun Z T,Tang C J,Tang X,Tapan I,Thorndike E H,Toth D,Ullrich M,Uman I,Varner G S,Wang B,Wang D, Wang D Y,Wang K,Wang L L, Wang L S,Wang M,Wang P,Wang P L,Wang Q J,Wang S G, Wang X F,Wang X L, Wang Y D,Wang Y F, Wang Y Q,Wang Z,Wang Z G, Wang Z Y,Wei D H,Wei J B,Weidenkaff P,Wen Q G,Wen S P,Werner M,Wiedner U,Wu L H,Wu N,Wu S X,Wu W,Wu Z,Xia L G,Xia Y X,Xiao Z J,Xie Y G,Xiu Q L,Xu G F,Xu Q J,Xu Q N,Xu X P,Xu Z R,Xue Z,Yan L,Yan W B, Yan Y H,Yang H X,Yang Y,Yang Y X,Ye H,Ye M,Ye M H,Yu B X,Yu C X,Yu H W,Yu J S,Yu S P,Yuan C Z,Yuan Y,Zafar A A,Zallo A,Zang S L,Zeng Y,Zhang B X, Zhang B Y,Zhang C,Zhang C C,Zhang D H, Zhang H H, Zhang H Y, Zhang L, Zhang J Q, Zhang J W, Zhang J Y, Zhang J Z,Zhang R,Zhang S H, Zhang X J, Zhang X Y, Zhang Y, Zhang Y H,Zhang Z H,Zhang Z P, Zhang Z Y,Zhao G,Zhao H S,Zhao J W,Zhao Lei,Zhao Ling,Zhao M G,Zhao Q,Zhao S J,Zhao T C,Zhao X H, Zhao Y B,Zhao Z G,Zhemchugov A,Zheng B,Zheng J P, Zheng Y H,Zhong B,Zhou L,Zhou X,Zhou X K,Zhou X R,Zhu C,Zhu K,Zhu K J,Zhu S H,Zhu X L,Zhu Y C,Zhu Y S,Zhu Z A, Zhuang J,Zou B S,Zou J H, Null Null

Physical review letters（2014）

引用 23|浏览30

暂无评分

摘要

We study the process e+ e- →(D* D*)± π∓ at a center-of-mass energy of 4.26 GeV using a 827 pb(-1) data sample obtained with the BESIII detector at the Beijing Electron Positron Collider. Based on a partial reconstruction technique, the Born cross section is measured to be (137±9±15) pb. We observe a structure near the (D* D*)± threshold in the π∓ recoil mass spectrum, which we denote as the Zc±(4025). The measured mass and width of the structure are (4026.3±2.6±3.7) MeV/c2 and (24.8±5.6±7.7) MeV, respectively. Its production ratio σ(e+ e- → Zc±(4025)π∓ → (D* D*)± π∓)/σ(e+ e- → (D* D*)± π∓) is determined to be 0.65±0.09±0.06. The first uncertainties are statistical and the second are systematic.

查看译文

AI 理解论文

溯源树

样例

生成溯源树，研究论文发展脉络

Chat Paper

正在生成论文摘要