6533b7d1fe1ef96bd125d59b
RESEARCH PRODUCT
Observation of a Charged(DD¯*)±Mass Peak ine+e−→πDD¯*ats=4.26 GeV
J. F. SunY. X. YangXiangdong RuanQ. LiuX. C. LouX. C. LouL. G. XiaM. R. ShepherdQ. ZhaoY. Z. SunB. KopfN. LiK. L. HeJ. B. JiaoY. ZengZhe SunQ. A. MalikW. C. YanZhiqiang LiuMiao HeS. BraunJifeng HuL. P. ZhouZ. P. MaoY. L. HanGang ZhaoM. Z. WangXuejun WangQ. M. MaB. KlossY. YuanY. S. ZhuI. TapanY. H. YanJ. W. ZhaoY. Z. YangGuangshun HuangJ. L. ZhangH. P. ChengJ. FangP. LarinD. Cronin-hennessyH. H. ZhangB. SpruckE. H. ThorndikeL. Q. QinJ. P. DaiKai LiuY. B. ChenXiaofeng ZhuJ. Z. ZhangS. L. OlsenRoy A. BriereS. SchumannJ. Z. BaiX. S. JiangM. MaggioraM. MaggioraM. BertaniLing ZhaoKe WangYao WangY. C. ZhuLei ZhaoZ. Y. HeZ. L. HouYang YangY. NefedovV. V. BytevD. Y. WangS. L. ZangFenfen AnT. HeldC. GengD. LiT. C. ZhaoZhenghao ZhangC. Z. YuanY. P. ChuJ. C. LiXiao-tong LuO. CakirG. R. LiaoH. L. MaH. J. LuJ. G. LuJ. ZhuangW. L. YuanX. B. JiF. F. JingL. FavaL. FavaX. K. ChuF. E. MaasT. HuQ. P. JiD. M. LiH. MuramatsuW. GradlY. F. WangM. X. LuoJian WeiYucheng HuangD. V. DedovichM. PelizaeusM. RipkaS. H. ZhangX. Y. ShenC. MoralesmoralesY. J. MaoA. ZalloYang QinY. F. LiangR. Baldini FerroliQ. J. XuQ. OuyangY. DingY. DingMichael WernerFeng LiuM. AblikimP. FriedelD. P. JinY. X. XiaB. J. LiuGuangming HuangX. N. LiZ. WuHaiping PengS. S. FangHai YuY. N. GaoY. ZhangQ. AnT. HussainG. R. LuX. Y. MaX. K. ZhouM. G. ZhaoH. MoeiniW. X. GongWei WuA. ZhemchugovA. ZhemchugovY. B. LiuC. S. JiH. LiangI. B. NikolaevI. B. NikolaevZ. A. ZhuQ. P. JiX. LiuDayong WangQun-yao WangP. L. LiuH. B. LiA. G. DenigC. L. LuoZ. J. XiaoC. C. ZhangB. ZhongL. B. GuoLei LiY. P. GuoJ. M. BianUlrich WiednerY. T. LiangW. LaiZ. NingM. KornicerT. MaY. H. ZhengLili ZhangTao LuoJ. V. BennettT. GuoX. L. JiS. P. YuG. A. ChelkovG. A. ChelkovCong-feng QiaoO. AlbayrakN. Yu. MuchnoiN. Yu. MuchnoiHeng-yun YeB. X. YuC. H. LiA. CalcaterraZ. G. ZhaoY. H. ZhangZ. B. LiSerkant Ali CetinQ. G. WenZ. Y. WangQ. L. XiuL. HuangX. K. ZhouM. KavatsyukZ. Y. ZhangZ. J. SunH. S. ChenH. LoehnerShujun ZhaoR. PolingJianping ZhengH. L. DaiIgor BoykoC. B. ZhangD. X. LinS. QianJialun PingA. Q. GuoH. M. HuX. Q. LiJ. C. ChenO. FuksO. FuksX. Y. ZhangM. LvY. G. XieM. GrecoM. GrecoJ. W. ZhangNasser Kalantar-nayestanakiB. X. ZhangZ. XueM. LaraW. M. SongJ. Q. ZhangS. X. DuY. J. SunE. BogerE. BogerM. DestefanisM. DestefanisM. H. GuH. Y. ShengB. S. ZouL. L. JiangC. X. YuM. LeyheZ. H. QinShan WangK. Y. LiuK. Y. LiuB. ZhengR. G. PingChuan LiuY. B. ZhaoP. L. WangG. LiW. G. LiX. L. LuoZ. A. LiuX. L. WangW. ShanG. S. VarnerY. H. GuanS. SpataroS. SpataroM. L. ChenY. BanP. WeidenkaffC. HuC. D. FuX. TangY. Q. WangC. Q. FengS. P. WenH. M. LiuS. NisarC. J. TangX. S. QinX. R. ZhouJ. L. FuM. QiCheng LiM. ShaoY. T. GuY. P. LuZ. Y. DengI. UmanQ. J. LiG. F. CaoXingguo LiA. SarantsevD. H. WeiM. UllrichK. J. ZhuJ. S. LangeXuantong ZhangS. B. LiuK. MoriyaZ. G. WangH. Y. ZhangH. X. YangX. H. MoL. S. WangM. H. YeG. F. ChenL. L. WangH. CaiJ. Y. ZhangJie YuC. P. ShenM. H. YeL. Y. DongY. K. HengZ. P. ZhangT. J. MinK. J. ZhuW. M. DingJ. W. ParkZujian WangX. H. ZhaoS. MaD. TothP. R. LiF. LiF. C. MaF. C. MaG. X. SunLi YanZ. JiaoFu-hu LiuD. H. ZhangSanfeng WuK. LiFang LiuI. DenysenkoJ. S. HuangJ. F. QiuL. H. WuC. X. LiuXinye XuB. Y. ZhangZhiqing LiuJ. F. ChangX. CaiX. R. LiM. Y. DongH. B. LiuZ. H. WangJ. H. ZouC. F. RedmerS. S. SunX. T. HuangJürgen BeckerR. E. MitchellG. RongW. B. YanM. N. AchasovM. N. AchasovS. PacettiS. PacettiN. WuKrisztian PetersB. Q. WangChi ZhangG. F. XuD. J. AmbroseS. JinX. R. ChenE. PrencipeW. D. LiCui LiA. A. ZafarK. H. RashidX. Y. SongS. J. ChenO. BondarenkoHuihui LiuP. L. WangJ. P. LiuJ. G. MesschendorpF. A. HarrisQiunan XuK. GoetzenW. KuehnJ. Minsubject
Nuclear physicsPhysicsAnnihilationBranching fractionElectron–positron annihilationPiMass spectrumCenter (category theory)Analytical chemistryGeneral Physics and AstronomyHigh Energy Physics::ExperimentInvariant massBar (unit)description
We report on a study of the process e(+)e(-) -> pi(+/-) (D (D) over bar*)(-/+) at root s = 4.26 GeV using a 525 pb(-1) data sample collected with the BESIII detector at the BEPCII storage ring. A distinct charged structure is observed in the (D (D) over bar*)(-/+) invariant mass distribution. When fitted to a mass- dependent- width Breit- Wigner line shape, the pole mass and width are determined to be M-pole (3883: 9 +/- 1.5 (stat) +/- 4.2 dsyst__ MeV= c(2) and Gamma(pole) = (24: 8 +/- 3.3 (stat) +/- 11: 0 (syst)) MeV. The mass and width of the structure, which we refer to as Z(c)(3885), are 2 sigma and 1 sigma, respectively, below those of the Z(c)(3900) -> pi(+/-) J/psi peak observed by BESIII and Belle in pi(+)pi(-) J/psi final states produced at the same center- of- mass energy. The angular distribution of the pi Z(c)(3885) system favors a J(P) = J(P) = 1(+) quantum number assignment for the structure and disfavors 1(-) or 0(-). The Born cross section times the (D (D) over bar*) branching fraction of the Z(c)(3885) is measured to be sigma(e(+)e(-) -> pi(+/-)Z(c)(3885)(-/+)) x B(Z(c)(3885)-/+ -> (D (D) over bar*)(-/+) = (83.5 +/- 6.6 (stat) +/- 22.0 (syst)) pb. Assuming the Z(c)(3885) -> (D (D) over bar*)(-/+) signal reported here and the Z(c)(3900) -> pi J/psi signal are from the same source, the partial width ratio (Gamma(Z(c)(3885) -> D (D) over bar*)/Gamma(Z(c)(3900) -> pi J/psi)) = 6.2 +/- 1.1 (stat) +/- 2.7 (syst) is determined.
year | journal | country | edition | language |
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2014-01-15 | Physical Review Letters |