M Ablikim, M N Achasov, X C Ai, O Albayrak, D J Ambrose, F F An, Q An, J Z Bai, R Baldini Ferroli, Y Ban, J Becker, J V Bennett, M Bertani, J M Bian, E Boger, O Bondarenko, I Boyko, R A Briere, V Bytev, H Cai, X Cai, O Cakir, A Calcaterra, G F Cao, S A Cetin, J F Chang, G Chelkov, G Chen, H S Chen, J C Chen, M L Chen, S J Chen, X Chen, Y B Chen, H P Cheng, Y P Chu, D Cronin-Hennessy, H L Dai, J P Dai, D Dedovich, Z Y Deng, A Denig, I Denysenko, M Destefanis, W M Ding, Y Ding, L Y Dong, M Y Dong, S X Du, J Fang, S S Fang, L Fava, C Q Feng, P Friedel, C D Fu, J L Fu, O Fuks, Q Gao, Y Gao, C Geng, K Goetzen, W X Gong, W Gradl, M Greco, M H Gu, Y T Gu, Y H Guan, A Q Guo, L B Guo, T Guo, Y P Guo, Y L Han, F A Harris, K L He, M He, Z Y He, T Held, Y K Heng, Z L Hou, C Hu, H M Hu, J F Hu, T Hu, G M Huang, G S Huang, J S Huang, L Huang, X T Huang, Y Huang, Y P Huang, T Hussain, C S Ji, Q Ji, Q P Ji, X B Ji, X L Ji, L L Jiang, X S Jiang, J B Jiao, Z Jiao, D P Jin, S Jin, F F Jing, N Kalantar-Nayestanaki, M Kavatsyuk, B Kopf, M Kornicer, W Kühn, W Lai, J S Lange, M Lara, P Larin, M Leyhe, C H Li, Cheng Li, Cui Li, D M Li, F Li, G Li, H B Li, J C Li, K Li, Lei Li, Q J Li, S L Li, W D Li, W G Li, X L Li, X N Li, X Q Li, X R Li, Z B Li, H Liang, Y F Liang, Y T Liang, G R Liao, X T Liao, D Lin, 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, Kai Liu, P L Liu, Q Liu, S B Liu, X Liu, Y B Liu, Z A Liu, Zhiqiang Liu, Zhiqing Liu, H Loehner, X C Lou, G R Lu, H J Lu, J G Lu, Q W Lu, X R Lu, Y P Lu, C L Luo, M X Luo, T Luo, X L Luo, M Lv, C L Ma, F C Ma, H L Ma, Q M Ma, S Ma, T Ma, X Y Ma, F E Maas, M Maggiora, Q A Malik, Y J Mao, Z P Mao, J G Messchendorp, J Min, T J Min, R E Mitchell, X H Mo, Y J Mo, H Moeini, C Morales Morales, K Moriya, N Yu Muchnoi, H Muramatsu, Y Nefedov, C Nicholson, I B Nikolaev, Z Ning, S L Olsen, Q Ouyang, S Pacetti, J W Park, M Pelizaeus, H P Peng, K Peters, J L Ping, R G Ping, R Poling, E Prencipe, M Qi, S Qian, C F Qiao, L Q Qin, X S Qin, Y Qin, Z H Qin, J F Qiu, K H Rashid, G Rong, X D Ruan, A Sarantsev, B D Schaefer, M Shao, C P Shen, X Y Shen, H Y Sheng, M R Shepherd, W M Song, X Y Song, S Spataro, B Spruck, D H Sun, G X Sun, J F Sun, S S Sun, Y J Sun, Y Z Sun, Z J Sun, Z T Sun, C J Tang, X Tang, I Tapan, E H Thorndike, D Toth, M Ullrich, I Uman, G S Varner, B Q 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 Wang, D H Wei, J B Wei, P Weidenkaff, Q G Wen, S P Wen, M Werner, U Wiedner, L H Wu, N Wu, S X Wu, W Wu, Z Wu, L G Xia, Y X Xia, Z J Xiao, Y G Xie, Q L Xiu, G F Xu, G M Xu, Q J Xu, Q N Xu, X P Xu, Z R Xu, F Xue, Z Xue, L Yan, W B Yan, Y H Yan, H X Yang, Y Yang, Y X Yang, H Ye, M Ye, M H Ye, B X Yu, C X Yu, H W Yu, J S Yu, S P Yu, C Z Yuan, Y Yuan, A A Zafar, A Zallo, S L Zang, Y Zeng, B X Zhang, B Y Zhang, C Zhang, C C Zhang, D H Zhang, H H Zhang, H Y Zhang, J Q Zhang, J W Zhang, J Y Zhang, J Z Zhang, LiLi Zhang, R Zhang, S H Zhang, X J Zhang, X Y Zhang, Y Zhang, Y H Zhang, Z P Zhang, Z Y Zhang, Zhenghao Zhang, G Zhao, H S Zhao, J W Zhao, K X Zhao, Lei Zhao, Ling Zhao, M G Zhao, Q Zhao, S J Zhao, T C Zhao, X H Zhao, Y B Zhao, Z G Zhao, A Zhemchugov, B Zheng, J P Zheng, Y H Zheng, B Zhong, L Zhou, X Zhou, X K Zhou, X R Zhou, C Zhu, K Zhu, K J Zhu, S H Zhu, X L Zhu, Y C Zhu, Y M Zhu, Y S Zhu, Z A Zhu, J Zhuang, B S Zou, J H Zou
{"title":"在sqrt[s] = 4.26 GeV时，e+ e-→π+ π- J/ψ中带电类谐元结构的观察。","authors":"M Ablikim, M N Achasov, X C Ai, O Albayrak, D J Ambrose, F F An, Q An, J Z Bai, R Baldini Ferroli, Y Ban, J Becker, J V Bennett, M Bertani, J M Bian, E Boger, O Bondarenko, I Boyko, R A Briere, V Bytev, H Cai, X Cai, O Cakir, A Calcaterra, G F Cao, S A Cetin, J F Chang, G Chelkov, G Chen, H S Chen, J C Chen, M L Chen, S J Chen, X Chen, Y B Chen, H P Cheng, Y P Chu, D Cronin-Hennessy, H L Dai, J P Dai, D Dedovich, Z Y Deng, A Denig, I Denysenko, M Destefanis, W M Ding, Y Ding, L Y Dong, M Y Dong, S X Du, J Fang, S S Fang, L Fava, C Q Feng, P Friedel, C D Fu, J L Fu, O Fuks, Q Gao, Y Gao, C Geng, K Goetzen, W X Gong, W Gradl, M Greco, M H Gu, Y T Gu, Y H Guan, A Q Guo, L B Guo, T Guo, Y P Guo, Y L Han, F A Harris, K L He, M He, Z Y He, T Held, Y K Heng, Z L Hou, C Hu, H M Hu, J F Hu, T Hu, G M Huang, G S Huang, J S Huang, L Huang, X T Huang, Y Huang, Y P Huang, T Hussain, C S Ji, Q Ji, Q P Ji, X B Ji, X L Ji, L L Jiang, X S Jiang, J B Jiao, Z Jiao, D P Jin, S Jin, F F Jing, N Kalantar-Nayestanaki, M Kavatsyuk, B Kopf, M Kornicer, W Kühn, W Lai, J S Lange, M Lara, P Larin, M Leyhe, C H Li, Cheng Li, Cui Li, D M Li, F Li, G Li, H B Li, J C Li, K Li, Lei Li, Q J Li, S L Li, W D Li, W G Li, X L Li, X N Li, X Q Li, X R Li, Z B Li, H Liang, Y F Liang, Y T Liang, G R Liao, X T Liao, D Lin, 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, Kai Liu, P L Liu, Q Liu, S B Liu, X Liu, Y B Liu, Z A Liu, Zhiqiang Liu, Zhiqing Liu, H Loehner, X C Lou, G R Lu, H J Lu, J G Lu, Q W Lu, X R Lu, Y P Lu, C L Luo, M X Luo, T Luo, X L Luo, M Lv, C L Ma, F C Ma, H L Ma, Q M Ma, S Ma, T Ma, X Y Ma, F E Maas, M Maggiora, Q A Malik, Y J Mao, Z P Mao, J G Messchendorp, J Min, T J Min, R E Mitchell, X H Mo, Y J Mo, H Moeini, C Morales Morales, K Moriya, N Yu Muchnoi, H Muramatsu, Y Nefedov, C Nicholson, I B Nikolaev, Z Ning, S L Olsen, Q Ouyang, S Pacetti, J W Park, M Pelizaeus, H P Peng, K Peters, J L Ping, R G Ping, R Poling, E Prencipe, M Qi, S Qian, C F Qiao, L Q Qin, X S Qin, Y Qin, Z H Qin, J F Qiu, K H Rashid, G Rong, X D Ruan, A Sarantsev, B D Schaefer, M Shao, C P Shen, X Y Shen, H Y Sheng, M R Shepherd, W M Song, X Y Song, S Spataro, B Spruck, D H Sun, G X Sun, J F Sun, S S Sun, Y J Sun, Y Z Sun, Z J Sun, Z T Sun, C J Tang, X Tang, I Tapan, E H Thorndike, D Toth, M Ullrich, I Uman, G S Varner, B Q 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 Wang, D H Wei, J B Wei, P Weidenkaff, Q G Wen, S P Wen, M Werner, U Wiedner, L H Wu, N Wu, S X Wu, W Wu, Z Wu, L G Xia, Y X Xia, Z J Xiao, Y G Xie, Q L Xiu, G F Xu, G M Xu, Q J Xu, Q N Xu, X P Xu, Z R Xu, F Xue, Z Xue, L Yan, W B Yan, Y H Yan, H X Yang, Y Yang, Y X Yang, H Ye, M Ye, M H Ye, B X Yu, C X Yu, H W Yu, J S Yu, S P Yu, C Z Yuan, Y Yuan, A A Zafar, A Zallo, S L Zang, Y Zeng, B X Zhang, B Y Zhang, C Zhang, C C Zhang, D H Zhang, H H Zhang, H Y Zhang, J Q Zhang, J W Zhang, J Y Zhang, J Z Zhang, LiLi Zhang, R Zhang, S H Zhang, X J Zhang, X Y Zhang, Y Zhang, Y H Zhang, Z P Zhang, Z Y Zhang, Zhenghao Zhang, G Zhao, H S Zhao, J W Zhao, K X Zhao, Lei Zhao, Ling Zhao, M G Zhao, Q Zhao, S J Zhao, T C Zhao, X H Zhao, Y B Zhao, Z G Zhao, A Zhemchugov, B Zheng, J P Zheng, Y H Zheng, B Zhong, L Zhou, X Zhou, X K Zhou, X R Zhou, C Zhu, K Zhu, K J Zhu, S H Zhu, X L Zhu, Y C Zhu, Y M Zhu, Y S Zhu, Z A Zhu, J Zhuang, B S Zou, J H Zou","doi":"10.1103/PhysRevLett.110.252001","DOIUrl":null,"url":null,"abstract":"<p><p>We study the process ee+ e- → π+ π- J/ψ at a center-of-mass energy of 4.260 GeV using a 525 pb(-1) data sample collected with the BESIII detector operating at the Beijing Electron Positron Collider. The Born cross section is measured to be (62.9±1.9±3.7) pb, consistent with the production of the Y(4260). We observe a structure at around 3.9 GeV/c2 in the π(±)J/ψ mass spectrum, which we refer to as the Z(c)(3900). If interpreted as a new particle, it is unusual in that it carries an electric charge and couples to charmonium. A fit to the π(±)J/ψ invariant mass spectrum, neglecting interference, results in a mass of (3899.0±3.6±4.9) MeV/c2 and a width of (46±10±20) MeV. Its production ratio is measured to be R = (σ(e+ e- → π(±)Z(c)(3900)(∓) → π+ π- J/ψ)/σ(e+ e- → π+ π- J/ψ)) = (21.5±3.3±7.5)%. In all measurements the first errors are statistical and the second are systematic.</p>","PeriodicalId":20069,"journal":{"name":"Physical review letters","volume":"110 25","pages":"252001"},"PeriodicalIF":8.1000,"publicationDate":"2013-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1103/PhysRevLett.110.252001","citationCount":"334","resultStr":"{\"title\":\"Observation of a charged charmoniumlike structure in e+ e- → π+ π- J/ψ at sqrt[s] = 4.26 GeV.\",\"authors\":\"M Ablikim, M N Achasov, X C Ai, O Albayrak, D J Ambrose, F F An, Q An, J Z Bai, R Baldini Ferroli, Y Ban, J Becker, J V Bennett, M Bertani, J M Bian, E Boger, O Bondarenko, I Boyko, R A Briere, V Bytev, H Cai, X Cai, O Cakir, A Calcaterra, G F Cao, S A Cetin, J F Chang, G Chelkov, G Chen, H S Chen, J C Chen, M L Chen, S J Chen, X Chen, Y B Chen, H P Cheng, Y P Chu, D Cronin-Hennessy, H L Dai, J P Dai, D Dedovich, Z Y Deng, A Denig, I Denysenko, M Destefanis, W M Ding, Y Ding, L Y Dong, M Y Dong, S X Du, J Fang, S S Fang, L Fava, C Q Feng, P Friedel, C D Fu, J L Fu, O Fuks, Q Gao, Y Gao, C Geng, K Goetzen, W X Gong, W Gradl, M Greco, M H Gu, Y T Gu, Y H Guan, A Q Guo, L B Guo, T Guo, Y P Guo, Y L Han, F A Harris, K L He, M He, Z Y He, T Held, Y K Heng, Z L Hou, C Hu, H M Hu, J F Hu, T Hu, G M Huang, G S Huang, J S Huang, L Huang, X T Huang, Y Huang, Y P Huang, T Hussain, C S Ji, Q Ji, Q P Ji, X B Ji, X L Ji, L L Jiang, X S Jiang, J B Jiao, Z Jiao, D P Jin, S Jin, F F Jing, N Kalantar-Nayestanaki, M Kavatsyuk, B Kopf, M Kornicer, W Kühn, W Lai, J S Lange, M Lara, P Larin, M Leyhe, C H Li, Cheng Li, Cui Li, D M Li, F Li, G Li, H B Li, J C Li, K Li, Lei Li, Q J Li, S L Li, W D Li, W G Li, X L Li, X N Li, X Q Li, X R Li, Z B Li, H Liang, Y F Liang, Y T Liang, G R Liao, X T Liao, D Lin, 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, Kai Liu, P L Liu, Q Liu, S B Liu, X Liu, Y B Liu, Z A Liu, Zhiqiang Liu, Zhiqing Liu, H Loehner, X C Lou, G R Lu, H J Lu, J G Lu, Q W Lu, X R Lu, Y P Lu, C L Luo, M X Luo, T Luo, X L Luo, M Lv, C L Ma, F C Ma, H L Ma, Q M Ma, S Ma, T Ma, X Y Ma, F E Maas, M Maggiora, Q A Malik, Y J Mao, Z P Mao, J G Messchendorp, J Min, T J Min, R E Mitchell, X H Mo, Y J Mo, H Moeini, C Morales Morales, K Moriya, N Yu Muchnoi, H Muramatsu, Y Nefedov, C Nicholson, I B Nikolaev, Z Ning, S L Olsen, Q Ouyang, S Pacetti, J W Park, M Pelizaeus, H P Peng, K Peters, J L Ping, R G Ping, R Poling, E Prencipe, M Qi, S Qian, C F Qiao, L Q Qin, X S Qin, Y Qin, Z H Qin, J F Qiu, K H Rashid, G Rong, X D Ruan, A Sarantsev, B D Schaefer, M Shao, C P Shen, X Y Shen, H Y Sheng, M R Shepherd, W M Song, X Y Song, S Spataro, B Spruck, D H Sun, G X Sun, J F Sun, S S Sun, Y J Sun, Y Z Sun, Z J Sun, Z T Sun, C J Tang, X Tang, I Tapan, E H Thorndike, D Toth, M Ullrich, I Uman, G S Varner, B Q 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 Wang, D H Wei, J B Wei, P Weidenkaff, Q G Wen, S P Wen, M Werner, U Wiedner, L H Wu, N Wu, S X Wu, W Wu, Z Wu, L G Xia, Y X Xia, Z J Xiao, Y G Xie, Q L Xiu, G F Xu, G M Xu, Q J Xu, Q N Xu, X P Xu, Z R Xu, F Xue, Z Xue, L Yan, W B Yan, Y H Yan, H X Yang, Y Yang, Y X Yang, H Ye, M Ye, M H Ye, B X Yu, C X Yu, H W Yu, J S Yu, S P Yu, C Z Yuan, Y Yuan, A A Zafar, A Zallo, S L Zang, Y Zeng, B X Zhang, B Y Zhang, C Zhang, C C Zhang, D H Zhang, H H Zhang, H Y Zhang, J Q Zhang, J W Zhang, J Y Zhang, J Z Zhang, LiLi Zhang, R Zhang, S H Zhang, X J Zhang, X Y Zhang, Y Zhang, Y H Zhang, Z P Zhang, Z Y Zhang, Zhenghao Zhang, G Zhao, H S Zhao, J W Zhao, K X Zhao, Lei Zhao, Ling Zhao, M G Zhao, Q Zhao, S J Zhao, T C Zhao, X H Zhao, Y B Zhao, Z G Zhao, A Zhemchugov, B Zheng, J P Zheng, Y H Zheng, B Zhong, L Zhou, X Zhou, X K Zhou, X R Zhou, C Zhu, K Zhu, K J Zhu, S H Zhu, X L Zhu, Y C Zhu, Y M Zhu, Y S Zhu, Z A Zhu, J Zhuang, B S Zou, J H Zou\",\"doi\":\"10.1103/PhysRevLett.110.252001\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>We study the process ee+ e- → π+ π- J/ψ at a center-of-mass energy of 4.260 GeV using a 525 pb(-1) data sample collected with the BESIII detector operating at the Beijing Electron Positron Collider. The Born cross section is measured to be (62.9±1.9±3.7) pb, consistent with the production of the Y(4260). We observe a structure at around 3.9 GeV/c2 in the π(±)J/ψ mass spectrum, which we refer to as the Z(c)(3900). If interpreted as a new particle, it is unusual in that it carries an electric charge and couples to charmonium. A fit to the π(±)J/ψ invariant mass spectrum, neglecting interference, results in a mass of (3899.0±3.6±4.9) MeV/c2 and a width of (46±10±20) MeV. Its production ratio is measured to be R = (σ(e+ e- → π(±)Z(c)(3900)(∓) → π+ π- J/ψ)/σ(e+ e- → π+ π- J/ψ)) = (21.5±3.3±7.5)%. In all measurements the first errors are statistical and the second are systematic.</p>\",\"PeriodicalId\":20069,\"journal\":{\"name\":\"Physical review letters\",\"volume\":\"110 25\",\"pages\":\"252001\"},\"PeriodicalIF\":8.1000,\"publicationDate\":\"2013-06-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1103/PhysRevLett.110.252001\",\"citationCount\":\"334\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Physical review letters\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://doi.org/10.1103/PhysRevLett.110.252001\",\"RegionNum\":1,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2013/6/17 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q1\",\"JCRName\":\"PHYSICS, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physical review letters","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1103/PhysRevLett.110.252001","RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2013/6/17 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 334
摘要
利用北京正电子对撞机BESIII探测器采集的525 pb(-1)数据样本，研究了质心能量为4.260 GeV时的ee+ e-→π+ π- J/ψ过程。Born截面测量值为(62.9±1.9±3.7)pb，与Y(4260)的产量一致。我们在π(±)J/ψ的质谱中观察到3.9 GeV/c2左右的结构，我们称之为Z(c)(3900)。如果把它解释为一种新粒子，它的不同寻常之处在于它携带一个电荷，并与调和体偶联。对π(±)J/ψ不变质谱进行拟合，忽略干扰，得到质量为(3899.0±3.6±4.9)MeV/c2，宽度为(46±10±20)MeV。其生产比率测量R =(σ(e + e -→π(±)Z (c)(3900)(∓)→π+π- J /ψ)/σ(e + e -→π+π- J /ψ))=(21.5±3.3±7.5)%。在所有的测量中，第一个误差是统计误差，第二个误差是系统误差。
Observation of a charged charmoniumlike structure in e+ e- → π+ π- J/ψ at sqrt[s] = 4.26 GeV.
We study the process ee+ e- → π+ π- J/ψ at a center-of-mass energy of 4.260 GeV using a 525 pb(-1) data sample collected with the BESIII detector operating at the Beijing Electron Positron Collider. The Born cross section is measured to be (62.9±1.9±3.7) pb, consistent with the production of the Y(4260). We observe a structure at around 3.9 GeV/c2 in the π(±)J/ψ mass spectrum, which we refer to as the Z(c)(3900). If interpreted as a new particle, it is unusual in that it carries an electric charge and couples to charmonium. A fit to the π(±)J/ψ invariant mass spectrum, neglecting interference, results in a mass of (3899.0±3.6±4.9) MeV/c2 and a width of (46±10±20) MeV. Its production ratio is measured to be R = (σ(e+ e- → π(±)Z(c)(3900)(∓) → π+ π- J/ψ)/σ(e+ e- → π+ π- J/ψ)) = (21.5±3.3±7.5)%. In all measurements the first errors are statistical and the second are systematic.
期刊介绍：
Physical review letters(PRL)covers the full range of applied, fundamental, and interdisciplinary physics research topics:
General physics, including statistical and quantum mechanics and quantum information
Gravitation, astrophysics, and cosmology
Elementary particles and fields
Nuclear physics
Atomic, molecular, and optical physics
Nonlinear dynamics, fluid dynamics, and classical optics
Plasma and beam physics
Condensed matter and materials physics
Polymers, soft matter, biological, climate and interdisciplinary physics, including networks
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
