6533b7dafe1ef96bd126f54e

RESEARCH PRODUCT

Observation of a Neutral Structure near theDD¯*Mass Threshold ine+e−→(DD¯*)0π0ats=4.226and 4.257 GeV

Z. T. SunZ. A. LiuE. H. ThorndikeY. X. XiaS. H. ZhuL. Q. QinV. PrasadW. G. LiF. FeldbauerShan WangXiao-rui LyuY. BanP. WeidenkaffF. LiC. DongS. SosioX. M. LiYunlong ZhangD. BettoniF. C. MaJ. L. ZhangR. PolingJianping ZhengS. ZhuJ. J. ZhangM. DestefanisM. BertaniP. L. WangS. SpataroL. YangX. P. XuJoachim PetterssonD. Y. LiuJ. B. JiaoX. C. ChenC. LengS. P. WenJin LiG. S. VarnerL. ZottiX. L. LuoC. HuX. S. QinX. R. ZhouX. TangLei LiH. M. LiuS. Chen ChenJ. F. QiuA. YuncuJ. Z. BaiCheng LiL. FavaX. H. MoK. J. ZhuL. S. WangM. H. YeW. GradlF. De MoriM. RipkaTao LuoK. MoriyaF. NerlingH. LiangJie ZhaoD. X. LinG. F. CaoM. QiH. J. YangL. L. WangH. CaiI. TapanAlexey ZhemchugovH. M. HuQ. P. JiY. DingY. H. GuanX. B. JiZ. NingW. P. WangB. J. LiuB. X. YuZhi ZengF. BianchiX. Y. ZhouBibo KeI. B. NikolaevY. H. YanJ. W. ZhaoM. G. ZhaoP. PatteriJ. H. YinX. L. JiX. K. ChuR. P. GuoY. N. ZhangM. ShaoY. T. GuY. C. ZhuKai LiuH. X. YangJ. W. ZhangI. GarziaE. FioravantiH. S. ChenW. B. YanW. KühnP. L. WangG. LiH. XiaoE. BogerH. L. DaiIgor BoykoJ. M. BianZ. A. ZhuZhenyu ZhangS. J. ZhaoS. B. LiuM. N. AchasovX. L. KangA. SarantsevD. H. WeiY. H. ZhengJ. S. LangeC. D. FuT. HeldJ. Q. ZhangQ. W. ZhaoM. H. YeJ. H. LiuCong-feng QiaoO. AlbayrakC. Q. FengW. C. YanX. F. WangJ. J. XuX. R. ChenS. QianJialun PingJ. P. LiuJ. MinZ. Y. DengKe WangD. J. AmbroseX. Q. HeGiulietto FeliciL. D. LiuN. Yu. MuchnoiQ. M. MaL. Y. DongX. S. KangS. PacettiW. J. ZhengY. H. ZhangC. P. ShenP. F. DuanYu ZhangK. ZhangJ. S. HuangJ. G. MesschendorpJ. P. DaiC. X. LiuF. A. HarrisH. J. LuX. Y. ZhangXingguo LiM. LaraJ. B. LiuR. KliemtJ. G. LuB. KopfK. L. HePeilian LiuJ. C. ChenL. P. ZhouM. ShiXuanhong LouY. G. XieLingxuan ZhangB. KlossX. Y. NiuL. J. WuFenfen AnT. C. ZhaoJie YuY. NefedovY. J. SunM. Z. WangNasser Kalantar-nayestanakiF. E. MaasM. AlbrechtW. D. LiJimin ZhaoZ. P. MaoY. YuanY. J. MoY. S. ZhuC. Morales MoralesS. X. DuZ. Y. WangH. P. ChengA. Q. GuoT. HuY. P. LuZ. G. WangXiangdong RuanJ. FangTao LiK. J. ZhuZ. GaoQ. LiuW. M. SongH. J. LiP. LarinH. Y. ZhangKe LiK. GoetzenG. CibinettoQ. L. XiuM. Y. DongL. XiaCh. RosnerM. H. GuG. F. ChenL. L. MaH. S. ChenT. WeberGuangming HuangP. X. ShenZ. WuW. P. WangH. Y. ShengJ. Y. ZhangL. G. XiaA. AmorosoR. Baldini FerroliL. W. JiangZ. H. QinM. TiemensYaquan FangQ. P. JiA. DbeyssiZhiqing ZhangCui LiC. X. YuX. LiuH. B. LiuY. K. HengZ. J. XiaoJ. J. LiangA. JulinLiqing XuX. Y. ShenQ. J. XuQ. OuyangB. ZhengR. G. PingS. S. FangG. F. XuJ. H. ZouS. JinSerkant Ali CetinY. B. LiuK. SchoenningB. S. ZouY. GuoX. Y. SongS. S. SunX. N. LiHaiping PengR. E. MitchellX. K. ZhouFang LiuI. DenysenkoB. Y. ZhangS. HanL. H. WuM. SavrieX. Y. GaoZ. H. WangChi ZhangC. F. RedmerXiaocong AiX. T. HuangG. RongJ. F. SunS. MarcelloY. ZengA. A. ZafarY. B. ChenK. H. RashidXiaofeng ZhuJ. Z. ZhangKrisztian PetersS. J. ChenG. R. LiaoJ. F. HuGuangshun HuangL. YanH. H. ZhangG. A. ChelkovM. MaggioraLing ZhaoLei ZhaoZ. L. HouYang YangD. Y. WangC. Z. YuanX. FangFeng LiuM. AblikimX. N. MaY. T. LiangA. ZalloM. FritschM. KavatsyukJun-yi ZhangY. P. GuoB. X. ZhangH. B. LiZ. P. ZhangS. SchumannYao WangA. G. DenigC. L. LuoD. W. BennettZujian WangC. C. ZhangB. ZhongL. B. GuoY. B. ZhaoW. ShanJ. DongH. MuramatsuY. Q. WangUlrich WiednerS. NisarC. J. TangM. KornicerY. HuY. P. LuT. MaB. WangD. XiaoX. Y. JiangM. M. MaP. R. LiZahra HaddadiY. PanG. X. SunJ. V. BennettZ. JiaoFu-hu LiuD. H. ZhangA. CalcaterraZ. G. ZhaoZ. J. SunH. LoehnerH. H. LiuJ. C. LiJ. ZhuangM. X. LuoJian WeiYucheng HuangD. V. DedovichOrhan CakirP. KieseS. L. OlsenRoy A. BriereX. S. JiangY. F. WangT. HussainX. Y. MaW. X. GongX. H. SunS. L. NiuF. Y. LiX. Q. LiM. GrecoK. Y. LiuZ. B. LiY. J. MaoJ. Y. LiuQ. GaoY. N. GaoY. ZhangQ. AnJ. Z. FanI. UmanH. L. MaD. M. LiM. PelizaeusY. X. YangA. HafnerQ. ZhaoY. Z. SunXiang ZhouGang ZhaoZhiqing LiuT. JohanssonJ. F. ChangMagnus WolkeY. F. LiangO. B. KolcuX. CaiD. P. JinX. Q. HaoDayong WangN. QinAndrzej KupscW. L. YuanM. L. ChenXian GaoM. Ullrich

subject

PhysicsElectron–positron annihilationIsospinAnalytical chemistryPiGeneral Physics and AstronomyResonanceAtomic physicsAtomic massBar (unit)

description

A neutral structure in the D (D) over bar* system around the D (D) over bar* mass threshold is observed with a statistical significance greater than 10 sigma in the processes e(+)e(-) -> D+D*(-)pi(0) + c.c. and e(+)e(-) -> D-0(D) over bar*(0)pi(0) + c.c. at root s = 4.226 and 4.257 GeV in the BESIII experiment. The structure is denoted as Z(c)(3885)(0). Assuming the presence of a resonance, its pole mass and width are determined to be [3885.7(-5.7)(+4.3) (stat) +/- 8.4(syst)] MeV/c(2) and [35(-12)(+11) (stat) +/- 15(syst)] MeV, respectively. The Born cross sections are measured to be sigma[e(+)e(-) -> Z(c)(3885)(0)pi(0); Z(c)(3885)(0) -> D (D) over bar*] = [77 +/- 13(stat) +/- 17(syst)] pb at 4.226 GeV and [47 +/- 9(stat) +/- 10(syst)] pb at 4.257 GeV. The ratio of decay rates B[Z(c)(3885)(0) -> D+D*(-) + c.c.]/B[Z(c)(3885)(0) -> D-0(D) over bar*(0) + c.c.] is determined to be 0.96 +/- 0.18(stat) +/- 0.12(syst), consistent with no isospin violation in the process, Z(c)(3885)(0) -> D (D) over bar*.

https://doi.org/10.1103/physrevlett.115.222002