6533b834fe1ef96bd129cb01

RESEARCH PRODUCT

Observation of a Neutral Charmoniumlike StateZc(4025)0ine+e−→(D*D¯*)0π0

F. C. MaZhiqing LiuT. JohanssonJ. F. ChangJ. F. QiuL. FavaF. NerlingX. CaiH. LiangX. Q. HaoX. K. ChuL. ZottiGuangshun HuangQ. P. JiC. HuS. L. NiuX. Q. LiP. L. WangPeilian LiuLingxuan ZhangY. J. MoZ. G. WangS. QianJialun PingZ. NingChi ZhangM. GrecoX. TangP. LarinZ. T. SunZ. A. LiuV. PrasadY. BanP. WeidenkaffS. P. WenX. S. QinX. R. ZhouCheng LiI. B. NikolaevJ. H. YinH. Y. ZhangH. H. ZhangX. L. LuoK. ZhangX. Y. ZhangG. F. ChenM. ShaoY. T. GuG. A. ChelkovM. BertaniHuan RenH. B. LiH. S. ChenT. WeberA. G. DenigC. L. LuoM. LaraJ. B. LiuYaquan FangA. Q. GuoJ. Y. ZhangK. Y. LiuM. H. GuA. YuncuH. Y. ShengR. Baldini FerroliE. FioravantiC. X. YuW. P. WangZ. B. LiE. H. ThorndikeZ. HaddadiB. ZhengR. G. PingShan WangY. J. SunQ. J. XuP. L. WangL. YangY. P. LuF. BianchiL. Q. QinXiao-rui LyuXiangdong RuanK. J. ZhuC. C. ZhangB. ZhongL. B. GuoQ. P. JiI. TapanW. M. SongK. SchoenningOrhan CakirM. MaggioraLing ZhaoC. LengP. KieseQ. LiuY. K. HengG. S. VarnerX. L. KangA. SarantsevD. H. WeiB. S. ZouJ. S. LangeJ. M. BianX. N. LiH. MuramatsuUlrich WiednerK. MoriyaY. H. YanY. H. GuanI. UmanJ. W. ZhaoYang QinLei ZhaoZ. Y. HeZ. L. HouYang YangS. L. OlsenRoy A. BriereQ. W. ZhaoZhenyu ZhangS. J. ZhaoD. Y. WangF. FeldbauerKrisztian PetersHaiping PengLiqing XuS. H. ZhangF. A. HarrisL. L. MaM. KornicerY. L. HanX. S. JiangE. E. ErenW. C. YanZhiqiang LiuY. C. ZhuT. MaYu ZhangY. X. XiaM. H. YeL. G. XiaA. AmorosoYunlong ZhangX. LiuK. LiZ. H. QinJ. C. ChenKai LiuJ. H. LiuX. Y. ShenV. SantoroKe WangL. P. ZhouX. C. ChenX. L. JiXuanhong LouL. L. JiangD. BettoniW. GradlNasser Kalantar-nayestanakiA. DbeyssiM. RipkaZ. J. XiaoW. G. LiZ. P. MaoC. Z. YuanJ. L. ZhangR. PolingH. P. ChengJ. FangTao LiL. D. LiuX. K. ZhouFang LiuC. Morales MoralesL. Y. DongA. CalcaterraZ. G. ZhaoJ. Q. ZhangX. M. LiM. QiH. J. YangI. DenysenkoJianping ZhengE. BogerM. UllrichY. G. XieZ. GaoS. SpataroG. R. LiaoLi ZhouCh. RosnerP. F. DuanSerkant Ali CetinJ. F. HuFenfen AnA. JulinY. N. PuS. ZhuW. J. ZhengB. L. WangY. NefedovJin LiY. B. ZhaoS. X. DuY. F. WangX. P. XuJ. B. JiaoT. HeldT. C. ZhaoZ. J. SunH. LoehnerJie ZhaoD. X. LinH. J. LuJ. G. LuF. De MoriC. GengAlexey ZhemchugovH. M. HuT. HussainY. DingB. J. LiuX. Y. ZhouW. ShanJ. DongTao LuoX. Y. MaM. G. ZhaoW. X. GongF. E. MaasB. Y. ZhangM. LvLei LiH. M. LiuJ. C. LiJ. W. ZhangT. HuY. N. ZhangCui LiQ. L. XiuB. X. YuY. Q. WangJ. F. SunX. F. WangJ. ZhuangM. X. LuoS. B. LiuQ. M. MaC. H. LiO. B. KolcuH. S. ChenJian WeiYucheng HuangS. NisarC. J. TangB. KlossX. Y. NiuX. H. MoL. S. WangGuangming HuangY. HuD. V. DedovichP. X. ShenW. KühnY. YuanY. S. ZhuJ. J. ZhangG. F. CaoJ. MinH. L. DaiIgor BoykoY. P. LuM. H. YeS. MarcelloY. ZengM. DestefanisZ. WuY. H. ZhengCong-feng QiaoL. W. JiangBibo KeD. J. AmbroseO. AlbayrakL. L. WangH. CaiB. WangB. KopfZhiqing ZhangW. B. YanD. XiaoM. N. AchasovZ. A. ZhuN. Yu. MuchnoiX. Y. JiangGiulietto FeliciK. L. HeS. PacettiP. R. LiX. S. KangHeng-yun YeY. H. ZhangMagnus WolkeY. B. ChenXiaofeng ZhuJ. Z. ZhangM. Z. WangY. F. LiangJimin ZhaoC. DongS. SosioM. Y. DongD. P. JinZ. Y. WangG. X. SunJ. V. BennettH. B. LiuLi YanJ. H. ZouM. AlbrechtZ. JiaoFu-hu LiuD. H. ZhangC. P. ShenJoachim PetterssonS. S. SunR. Q. LuY. P. GuoZ. P. ZhangW. D. LiR. E. MitchellDayong WangN. QinD. W. BennettZujian WangQ. OuyangH. X. YangI. GarziaS. S. FangY. B. LiuAndrzej KupscW. L. YuanM. L. ChenHuihui LiuJ. P. LiuJ. G. MesschendorpJ. P. DaiQiunan XuK. GoetzenY. X. YangZ. H. WangG. F. XuS. JinY. GuoX. Y. SongC. F. RedmerXiaocong AiA. HafnerQ. ZhaoJ. S. HuangX. T. HuangC. X. LiuG. RongH. P. HuangY. Z. SunA. A. ZafarXiang ZhouK. H. RashidGang ZhaoH. W. YuS. J. ChenS. HanH. L. MaD. M. LiL. H. WuM. SavrieM. PelizaeusX. Y. GaoY. J. MaoJ. Y. LiuQ. GaoY. N. GaoY. ZhangQ. AnJ. Z. FanX. FangFeng LiuM. AblikimX. N. MaY. T. LiangA. ZalloG. LiC. D. FuM. FritschC. Q. FengX. R. ChenZ. Y. DengM. KavatsyukXingguo LiB. X. ZhangJ. Z. BaiS. SchumannYao WangX. B. JiM. TiemensP. PatteriXiao-hai LiuR. KliemtJie YuT. J. MinK. J. ZhuG. CibinettoF. Li

subject

Physics010308 nuclear & particles physicsElectron–positron annihilationAnalytical chemistryGeneral Physics and AstronomyMass spectrometry01 natural sciencesAtomic massRecoil0103 physical sciencesMass spectrumPiAtomic physicsBorn approximation010306 general physicsBar (unit)

description

We report a study of the process e(+)e(-) -> (D*(D) over bar*)(0)pi(0) using e(+)e(-) collision data samples with integrated luminosities of 1092 pb(-1) at root s = 4.23 GeV and 826 pb(-1) at root s = 4.26 GeV collected with the BESIII detector at the BEPCII storage ring. We observe a new neutral structure near the (D*(D) over bar*)(0) mass threshold in the pi(0) recoil mass spectrum, which we denote as Z(c)(4025)(0). Assuming a Breit-Wigner line shape, its pole mass and pole width are determined to be (4025.5(-4.7)(+2.0) +/- 3.1) MeV/c(2) and (23.0 +/- 6.0 +/- 1.0) MeV, respectively. The Born cross sections of e(+)e(-) -> Z(c)(4025)(0)pi(0) -> (D*(D) over bar*)(0)pi(0) are measured to be (61.6 +/- 8.2 +/- 9.0) pb at root s = 4.23 GeV and (43.4 +/- 8.0 +/- 5.4) pb at root s = 4.26 GeV. The first uncertainties are statistical and the second are systematic.

https://doi.org/10.1103/physrevlett.115.182002