6533b7dafe1ef96bd126dfbe
RESEARCH PRODUCT
Observation of a Charged Charmoniumlike Structure ine+e−→π+π−J/ψats=4.26 GeV
N. WuKrisztian PetersM. Y. DongH. B. LiuZ. A. LiuJ. H. ZouS. S. SunY. BanP. WeidenkaffXiao Dong ChenB. Q. WangM. QiS. P. WenX. S. QinJürgen BeckerX. R. ZhouC. P. ShenS. SpataroC. S. JiH. LiangJ. L. FuCheng LiL. H. WuX. LiuR. E. MitchellQ. P. JiY. T. LiangZ. J. XiaoY. P. GuoJie YuS. B. LiuY. L. HanT. GuoHongsheng ZhaoJianping ZhengM. LvY.n. GaoZ. XueM. DestefanisSerkant Ali CetinJ. M. BianZhenyu ZhangW. LaiZ. B. LiY. B. ZhaoX. H. MoL. S. WangM. H. YeI. TapanS. L. LiY. H. YanH. X. YangP. L. WangQi-wen LüY. H. GuanM. H. GuJ. W. ZhaoM. MaggioraD. Cronin-hennessyL. L. WangH. CaiM. BertaniChi ZhangJ. C. ChenXuanhong LouNasser Kalantar-nayestanakiM. KavatsyukY. C. ZhuY. Q. WangH. Y. ShengC. X. YuM. H. YeS. MaD. TothKai LiuT. J. MinK. J. ZhuB. D. SchaeferW. B. YanM. N. AchasovC. Morales MoralesC. J. TangY. P. LuKai LiuS. QianJialun PingHuihui LiuL. Y. DongX. Y. ZhangZhiqiang LiuMiao HeJ. P. LiuLing ZhaoZ. G. WangH. Y. ZhangS. PacettiSanfeng WuT. HeldB. X. ZhangMario GrecoJ. S. HuangJ. G. MesschendorpB. ZhengR. G. PingC. X. LiuB. SpruckM. LaraE. H. ThorndikeJifeng HuJ. F. SunF. LiF. C. MaW. GradlL. P. ZhouY. J. SunE. BogerW. M. DingY. NefedovG. F. ChenG. S. HuangQiunan XuY. ZengZhe SunJ. MinZ. P. MaoH. B. LiuX. L. JiY. F. LiangJ. Y. ZhangK. LiFang LiuL. Q. QinS. L. OlsenS. P. YuK. GoetzenI. B. NikolaevRoy A. BriereY. D. WangQ. M. MaH. P. ChengA. Q. GuoD. J. AmbroseZ. Y. HeG. A. ChelkovJ. F. QiuK. H. RashidB. KopfD. P. JinJ. FangI. DenysenkoG. LiK. L. HeL. FavaZujian WangJ. B. JiaoZ. L. HouY. B. ChenXiaofeng ZhuJ. Z. ZhangM. ShaoY. T. GuY. DingQ. J. LiS. J. ChenO. BondarenkoYang YangTalib HussainW. M. SongY. K. HengE. PrencipeB. Y. ZhangX. H. ZhaoC. D. FuX. S. JiangA. SarantsevY. YuanY. S. ZhuQun-yao WangD. Y. WangD. H. WeiJ. S. LangeX. Y. ShenDayong WangJ. P. DaiP. L. LiuC. Q. FengB. J. LiuW. D. LiM. LeyheZ. H. QinL. L. JiangJoong-won ParkLili ZhangXiangdong RuanQ. L. XiuQ. LiuLei ZhaoChuan LiuO. FuksZ. Y. DengC. L. MaW. G. LiFeng XueCui LiG. R. LiaoXuejun WangJ. Q. ZhangG. F. XuShou-hua ZhuW. KühnX. L. WangXingguo LiM. G. ZhaoX. P. XuY. G. XieY. J. MoF. F. JingS. JinC. ZhuG. X. SunLi YanO. CakirZ. JiaoFu-hu LiuD. H. ZhangL. G. XiaH. J. LuJ. G. LuH. M. LiuXiao-tong LuZ. A. ZhuJ. Z. BaiY. F. WangG. M. XuFeng LiuQ. OuyangB. S. ZouS. X. DuC. Z. YuanF. A. HarrisX. Y. SongG. F. CaoG. R. LuXiaocong AiS. S. FangM. KornicerD. H. SunS. L. ZangF. E. MaasX. T. HuangM. AblikimA. A. ZafarY. B. LiuH. L. MaT. HuM. L. ChenD. M. LiY. P. ChuX. Y. MaH. MoeiniW. X. GongG. RongH. MuramatsuP. L. WangX. B. JiC. GengZhiqing LiuX. L. LuoM. PelizaeusShan WangMichael WernerY. J. MaoGuangming HuangC. H. LiH. S. ChenZ. WuJ. F. ChangP. FriedelQ. GaoX. Q. LiY. ZhangQ. AnG. S. VarnerZhiqing ZhangQ. P. JiWei WuA. ZhemchugovHang LiuX. CaiX. R. LiS. H. ZhangY. X. YangH. H. ZhangI. UmanM. R. ShepherdK. Y. LiuK. X. ZhaoZ. NingC. NicholsonQ. ZhaoY. Z. SunX. K. ZhouXiang ZhouGang ZhaoY. H. ZhengCong-feng QiaoO. AlbayrakMeng WangM. UllrichH. B. LiN. Yu. MuchnoiA. G. DenigC. L. LuoHeng-yun YeY. H. ZhangC. C. ZhangB. ZhongL. B. GuoLei LiQ. G. WenUlrich WiednerT. MaZ. Y. WangYanping HuangJ. C. LiJ. ZhuangM. X. LuoJian WeiYucheng HuangD. V. DedovichZhenli XuX. T. LiaoR. Baldini FerroliA. CalcaterraZ. G. ZhaoQ. J. XuD. X. LinL. HuangH. M. HuZ. J. SunH. LoehnerX. N. LiHaiping PengHai YuKe WangR. PolingV. V. BytevFenfen AnT. C. ZhaoRui ZhangZhenghao ZhangTao LuoJ. V. BennettB. X. YuJ. W. ZhangShujun ZhaoH. L. DaiIgor BoykoA. ZalloYang QinY. X. XiaP. LarinY. M. ZhuQ. A. MalikC. HuX. TangK. J. ZhuXuantong ZhangK. Moriyasubject
PhysicsPositronElectron–positron annihilationAnalytical chemistryMass spectrumGeneral Physics and AstronomyHigh Energy Physics::ExperimentZ(4430)TetraquarkAtomic massX(3872)Zc(3900)description
We study the process e(+)e(-) -> pi(+)pi(-) J/psi 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/c(2) in the pi(+/-) J/psi 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 pi(+/-) J/psi invariant mass spectrum, neglecting interference, results in a mass of (3899.0 +/- 3.6 +/- 4.9) MeV/c(2) and a width of (46 +/- 10 +/- 20) MeV. Its production ratio is measured to be R = (sigma(e(+)e(-) -> pi(+/-) Z(c)(3900)(-/+) -> pi(+)pi(-) J/psi)/sigma(e(+)e(-) -> pi(+)pi(-) J/psi)) = (21.5 +/- 3.3 +/- 7.5)%. In all measurements the first errors are statistical and the second are systematic.
year | journal | country | edition | language |
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2013-06-17 | Physical Review Letters |