6533b828fe1ef96bd128787a
RESEARCH PRODUCT
Evidence of a Resonant Structure in the Cross Section between 4.05 and 4.60 GeV
M. AblikimM. N. AchasovS. AhmedM. AlbrechtA. AmorosoF. F. AnQ. AnY. BaiO. BakinaR. Baldini FerroliY. BanD. W. BennettJ. V. BennettN. BergerM. BertaniD. BettoniJ. M. BianF. BianchiE. BogerI. BoykoR. A. BriereH. CaiX. CaiO. CakirA. CalcaterraG. F. CaoS. A. CetinJ. ChaiJ. F. ChangG. ChelkovG. ChenH. S. ChenJ. C. ChenM. L. ChenP. L. ChenS. J. ChenY. B. ChenG. CibinettoH. L. DaiJ. P. DaiA. DbeyssiD. DedovichZ. Y. DengA. DenigI. DenysenkoM. DestefanisF. De MoriY. DingC. DongJ. DongL. Y. DongM. Y. DongZ. L. DouS. X. DuP. F. DuanJ. Z. FanJ. FangS. S. FangX. FangY. FangR. FarinelliL. FavaS. FeganF. FeldbauerG. FeliciC. Q. FengM. FritschC. D. FuQ. GaoX. L. GaoY. GaoY. G. GaoZ. GaoI. GarziaK. GoetzenL. GongW. X. GongW. GradlM. GrecoM. H. GuS. GuY. T. GuA. Q. GuoL. B. GuoR. P. GuoY. P. GuoZ. HaddadiS. HanX. Q. HaoF. A. HarrisK. L. HeF. H. HeinsiusT. HeldY. K. HengT. HoltmannZ. L. HouC. HuH. M. HuT. HuY. HuG. S. HuangJ. S. HuangX. T. HuangX. Z. HuangZ. L. HuangT. HussainW. Ikegami AnderssonQ. JiQ. P. JiX. B. JiX. L. JiX. S. JiangX. Y. JiangJ. B. JiaoZ. JiaoD. P. JinS. JinY. JinT. JohanssonA. JulinN. Kalantar-nayestanakiX. L. KangX. S. KangM. KavatsyukB. C. KeT. KhanA. KhoukazP. KieseR. KliemtL. KochO. B. KolcuB. KopfM. KornicerM. KuemmelM. KuessnerM. KuhlmannA. KupscW. KühnJ. S. LangeM. LaraP. LarinL. LavezziS. LeiberH. LeithoffC. LengC. LiCheng LiD. M. LiF. LiF. Y. LiG. LiH. B. LiH. J. LiJ. C. LiK. J. LiKang LiKe LiLei LiP. L. LiP. R. LiQ. Y. LiT. LiW. D. LiW. G. LiX. L. LiX. N. LiX. Q. LiZ. B. LiH. LiangY. F. LiangY. T. LiangG. R. LiaoD. X. LinB. LiuB. J. LiuC. X. LiuD. LiuF. H. LiuFang LiuFeng LiuH. B. LiuH. M. LiuHuanhuan LiuHuihui LiuJ. B. LiuJ. P. LiuJ. Y. LiuK. LiuK. Y. LiuKe LiuP. L. LiuQ. LiuS. B. LiuX. LiuY. B. LiuZ. A. LiuZhiqing LiuY. F. LongX. C. LouH. J. LuJ. G. LuY. LuY. P. LuC. L. LuoM. X. LuoX. L. LuoX. R. LyuF. C. MaH. L. MaL. L. MaM. M. MaQ. M. MaT. MaX. N. MaX. Y. MaY. M. MaF. E. MaasM. MaggioraQ. A. MalikY. J. MaoZ. P. MaoS. MarcelloZ. X. MengJ. G. MesschendorpG. MezzadriJ. MinT. J. MinR. E. MitchellX. H. MoY. J. MoC. Morales MoralesG. MorelloN. Yu. MuchnoiH. MuramatsuA. MustafaY. NefedovF. NerlingI. B. NikolaevZ. NingS. NisarS. L. NiuX. Y. NiuS. L. OlsenQ. OuyangS. PacettiY. PanM. PapenbrockP. PatteriM. PelizaeusJ. PellegrinoH. P. PengK. PetersJ. PetterssonJ. L. PingR. G. PingA. PitkaR. PolingV. PrasadH. R. QiM. QiS. QianC. F. QiaoN. QinX. S. QinZ. H. QinJ. F. QiuK. H. RashidC. F. RedmerM. RichterM. RipkaM. RoloG. RongCh. RosnerX. D. RuanA. SarantsevM. SavriéC. SchnierK. SchoenningM. ShaoC. P. ShenP. X. ShenX. Y. ShenH. Y. ShengJ. J. SongW. M. SongX. Y. SongS. SosioC. SowaS. SpataroG. X. SunJ. F. SunL. SunS. S. SunX. H. SunY. J. SunY. K. SunY. Z. SunZ. J. SunZ. T. SunC. J. TangG. Y. TangX. TangI. TapanM. TiemensB. TsedneeI. UmanG. S. VarnerB. WangB. L. WangD. Y. WangDan WangK. WangL. L. WangL. S. WangM. WangMeng WangP. WangP. L. WangW. P. WangX. F. WangY. WangY. D. WangY. F. WangY. Q. WangZ. WangZ. G. WangZ. H. WangZ. Y. WangZongyuan WangT. WeberD. H. WeiP. WeidenkaffS. P. WenU. WiednerM. WolkeL. H. WuL. J. WuZ. WuL. XiaX. XiaY. XiaD. XiaoH. XiaoY. J. XiaoZ. J. XiaoY. G. XieY. H. XieX. A. XiongQ. L. XiuG. F. XuJ. J. XuL. XuQ. J. XuQ. N. XuX. P. XuL. YanW. B. YanW. C. YanW. C. YanY. H. YanH. J. YangH. X. YangL. YangY. H. YangY. X. YangYifan YangM. YeM. H. YeJ. H. YinZ. Y. YouB. X. YuC. X. YuC. Z. YuanY. YuanA. YuncuA. A. ZafarA. ZalloY. ZengZ. ZengB. X. ZhangB. Y. ZhangC. C. ZhangD. H. ZhangH. H. ZhangH. Y. ZhangJ. ZhangJ. L. ZhangJ. Q. ZhangJ. W. ZhangJ. Y. ZhangJ. Z. ZhangK. ZhangL. ZhangS. Q. ZhangX. Y. ZhangY. H. ZhangY. T. ZhangYang ZhangYao ZhangYu ZhangZ. H. ZhangZ. P. ZhangZ. Y. ZhangG. ZhaoJ. W. ZhaoJ. Y. ZhaoJ. Z. ZhaoLei ZhaoLing ZhaoM. G. ZhaoQ. ZhaoS. J. ZhaoT. C. ZhaoY. B. ZhaoZ. G. ZhaoA. ZhemchugovB. ZhengJ. P. ZhengW. J. ZhengY. H. ZhengB. ZhongL. ZhouX. ZhouX. K. ZhouX. R. ZhouX. Y. ZhouY. X. ZhouJ. ZhuJ. ZhuK. ZhuK. J. ZhuS. ZhuS. H. ZhuX. L. ZhuY. C. ZhuY. S. ZhuZ. A. ZhuJ. ZhuangB. S. ZouJ. H. Zousubject
PhysicsElectron–positron annihilationDetectorGeneral Physics and AstronomyResonanceState (functional analysis)01 natural sciencesCross section (physics)Amplitude0103 physical sciencesMoleculeAtomic physics010306 general physicsStorage ringdescription
The cross section of the process e^{+}e^{-}→π^{+}D^{0}D^{*-} for center-of-mass energies from 4.05 to 4.60 GeV is measured precisely using data samples collected with the BESIII detector operating at the BEPCII storage ring. Two enhancements are clearly visible in the cross section around 4.23 and 4.40 GeV. Using several models to describe the dressed cross section yields stable parameters for the first enhancement, which has a mass of 4228.6±4.1±6.3 MeV/c^{2} and a width of 77.0±6.8±6.3 MeV, where the first uncertainties are statistical and the second ones are systematic. Our resonant mass is consistent with previous observations of the Y(4220) state and the theoretical prediction of a DD[over ¯]_{1}(2420) molecule. This result is the first observation of Y(4220) associated with an open-charm final state. Fits with three resonance functions with additional Y(4260), Y(4320), Y(4360), ψ(4415), or a new resonance do not show significant contributions from either of these resonances. The second enhancement is not from a single known resonance. It could contain contributions from ψ(4415) and other resonances, and a detailed amplitude analysis is required to better understand this enhancement.
year | journal | country | edition | language |
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2019-03-15 |