6533b7d7fe1ef96bd126782c

RESEARCH PRODUCT

Measurement of cross section for $e^{+}e^{-}\rightarrow��^{0}\bar��^{0}$ near threshold

Besiii CollaborationM. AblikimM. N. AchasovP. AdlarsonS. AhmedM. AlbrechtR. AlibertiA. AmorosoM. R. AnQ. AnX. H. BaiY. BaiO. BakinaR. Baldini FerroliI. BalossinoY. BanK. BegzsurenN. BergerM. BertaniD. BettoniF. BianchiJ. BlomsA. BortoneI. BoykoR. A. BriereH. CaiX. CaiA. CalcaterraG. F. CaoN. CaoS. A. CetinX. Y. ChaiJ. F. ChangW. L. ChangG. ChelkovD. Y. ChenG. ChenH. S. ChenM. L. ChenS. J. ChenX. R. ChenY. B. ChenZ. J ChenW. S. ChengG. CibinettoF. CossioX. F. CuiH. L. DaiX. C. DaiA. DbeyssiR. E. De BoerD. DedovichZ. Y. DengA. DenigI. DenysenkoM. DestefanisF. De MoriY. DingC. DongJ. DongL. Y. DongM. Y. DongX. DongS. X. DuY. L. FanJ. FangS. S. FangY. FangR. FarinelliL. FavaF. FeldbauerG. FeliciC. Q. FengJ. H. FengM. FritschC. D. FuY. GaoY. GaoY. GaoY. G. GaoI. GarziaP. T. GeC. GengE. M. GersabeckA GilmanK. GoetzenL. GongW. X. GongW. GradlM. GrecoL. M. GuM. H. GuS. GuY. T. GuC. Y GuanA. Q. GuoL. B. GuoR. P. GuoY. P. GuoA. GuskovT. T. HanW. Y. HanX. Q. HaoF. A. HarrisN H��skenN. H��skenK. L. HeF. H. HeinsiusC. H. HeinzT. HeldY. K. HengC. HeroldM. HimmelreichT. HoltmannG. Y. HouY. R. HouZ. L. HouH. M. HuJ. F. HuT. HuY. HuG. S. HuangL. Q. HuangX. T. HuangY. P. HuangZ. HuangT. HussainW. Ikegami AnderssonW. ImoehlM. IrshadS. JaegerS. JanchivQ. JiQ. P. JiX. B. JiX. L. JiY. Y. JiH. B. JiangX. S. JiangJ. B. JiaoZ. JiaoS. JinY. JinM. Q. JingT. JohanssonN. Kalantar-nayestanakiX. S. KangR. KappertM. KavatsyukB. C. KeI. K. KeshkA. KhoukazP. KieseR. KiuchiR. KliemtL. KochO. B. KolcuB. KopfM. KuemmelM. KuessnerA. KupscM. G. KurthW. K��hnJ. J. LaneJ. S. LangeP. LarinA. LavaniaL. LavezziZ. H. LeiH. LeithoffM. LellmannT. LenzC. LiC. H. LiCheng LiD. M. LiF. LiG. LiH. LiH. LiH. B. LiH. J. LiJ. L. LiJ. Q. LiJ. S. LiKe LiL. K. LiLei LiP. R. LiS. Y. LiW. D. LiW. G. LiX. H. LiX. L. LiXiaoyu LiZ. Y. LiH. LiangH. LiangH. LiangY. F. LiangY. T. LiangG. R. LiaoL. Z. LiaoJ. LibbyC. X. LinB. J. LiuC. X. LiuD. LiuF. H. LiuFang LiuFeng LiuH. B. LiuH. M. LiuHuanhuan LiuHuihui LiuJ. B. LiuJ. L. LiuJ. Y. LiuK. LiuK. Y. LiuL. LiuM. H. LiuP. L. LiuQ. LiuQ. LiuS. B. LiuShuai LiuT. LiuW. M. LiuX. LiuY. LiuY. B. LiuZ. A. LiuZ. Q. LiuX. C. LouF. X. LuH. J. LuJ. D. LuJ. G. LuX. L. LuY. LuY. P. LuC. L. LuoM. X. LuoP. W. LuoT. LuoX. L. LuoX. R. LyuF. C. MaH. L. MaL. L. MaM. M. MaQ. M. MaR. Q. MaR. T. MaX. X. MaX. Y. MaF. E. MaasM. MaggioraS. MaldanerS. MaldeQ. A. MalikA. MangoniY. J. MaoZ. P. MaoS. MarcelloZ. X. MengJ. G. MesschendorpG. MezzadriT. J. MinR. E. MitchellX. H. MoY. J. MoN. Yu. MuchnoiH. MuramatsuS. NakhoulY. NefedovF. NerlingI. B. NikolaevZ. NingS. NisarS. L. OlsenQ. OuyangS. PacettiX. PanY. PanA. PathakP. PatteriM. PelizaeusH. P. PengK. PetersJ. PetterssonJ. L. PingR. G. PingR. PolingV. PrasadH. QiH. R. QiK. H. QiM. QiT. Y. QiS. QianW. B. QianZ. QianC. F. QiaoL. Q. QinX. P. QinX. S. QinZ. H. QinJ. F. QiuS. Q. QuK. H. RashidK. RavindranC. F. RedmerA. RivettiV. RodinM. RoloG. RongCh. RosnerM. RumpH. S. SangA. SarantsevY. SchelhaasC. SchnierK. SchoenningM. ScodeggioD. C. ShanW. ShanX. Y. ShanJ. F. ShangguanM. ShaoC. P. ShenH. F. ShenP. X. ShenX. Y. ShenH. C. ShiR. S. ShiX. ShiX. D ShiJ. J. SongW. M. SongY. X. SongS. SosioS. SpataroK. X. SuP. P. SuF. F. SuiG. X. SunH. K. SunJ. F. SunL. SunS. S. SunT. SunW. Y. SunW. Y. SunX SunY. J. SunY. K. SunY. Z. SunZ. T. SunY. H. TanY. X. TanC. J. TangG. Y. TangJ. TangJ. X. TengV. ThorenW. H. TianY. T. TianI. UmanB. WangC. W. WangD. Y. WangH. J. WangH. P. WangK. WangL. L. WangM. WangM. Z. WangMeng WangW. WangW. H. WangW. P. WangX. WangX. F. WangX. L. WangY. WangY. WangY. D. WangY. F. WangY. Q. WangY. Y. WangZ. WangZ. Y. WangZiyi WangZongyuan WangD. H. WeiF. WeidnerS. P. WenL. Z. WenD. J. WhiteU. WiednerG. WilkinsonM. WolkeL. WollenbergJ. F. WuL. H. WuL. J. WuX. WuZ. WuL. XiaH. XiaoS. Y. XiaoZ. J. XiaoX. H. XieY. G. XieY. H. XieT. Y. XingG. F. XuQ. J. XuW. XuX. P. XuY. C. XuF. YanL. YanW. B. YanW. C. YanXu YanH. J. YangH. X. YangL. YangS. L. YangY. X. YangYifan YangZhi YangM. YeM. H. YeJ. H. YinZ. Y. YouB. X. YuC. X. YuG. YuJ. S. YuT. YuC. Z. YuanL. YuanX. Q. YuanY. YuanZ. Y. YuanC. X. YueA. YuncuA. A. ZafarZengY. ZengA. Q. ZhangB. X. ZhangGuangyi ZhangH. ZhangH. H. ZhangH. H. ZhangH. Y. ZhangJ. J. ZhangJ. L. ZhangJ. Q. ZhangJ. W. ZhangJ. Y. ZhangJ. Z. ZhangJianyu ZhangJiawei ZhangL. M. ZhangL. Q. ZhangLei ZhangS. ZhangS. F. ZhangShulei ZhangX. D. ZhangX. Y. ZhangY. ZhangY. H. ZhangY. T. ZhangYan ZhangYao ZhangYi ZhangZ. H. ZhangZ. Y. ZhangG. ZhaoJ. ZhaoJ. Y. ZhaoJ. Z. ZhaoLei ZhaoLing ZhaoM. G. ZhaoQ. ZhaoS. J. ZhaoY. B. ZhaoY. X. ZhaoZ. G. ZhaoA. ZhemchugovB. ZhengJ. P. ZhengY. ZhengY. H. ZhengB. ZhongC. ZhongL. P. ZhouQ. ZhouX. ZhouX. K. ZhouX. R. ZhouX. Y. ZhouA. N. ZhuJ. ZhuK. ZhuK. J. ZhuS. H. ZhuT. J. ZhuW. J. ZhuW. J. ZhuY. C. ZhuZ. A. ZhuB. S. ZouJ. H. Zou

subject

High Energy Physics - Experiment (hep-ex)High Energy Physics::PhenomenologyFOS: Physical sciencesHigh Energy Physics::Experiment

description

Using $e^+e^-$ collision data at ten center-of-mass energies between 2.644 and 3.080 GeV collected with the BESIII detector at BEPCII and corresponding to an integrated luminosity of about 500 pb$^{-1}$, we measure the cross sections and effective form factors for the process $e^{+}e^{-}\rightarrow��^{0}\bar��^{0}$ utilizing a single-tag method. A fit to the cross section of $e^{+}e^{-}\rightarrow��^{0}\bar��^{0}$ with a pQCD-driven power function is performed, from which no significant resonance or threshold enhancement is observed. In addition, the ratio of cross sections for the processes $e^{+}e^{-}\rightarrow��^{-}\bar��^{+}$ and $��^{0}\bar��^{0}$ is calculated using recent BESIII measurement and is found to be compatible with expectation from isospin symmetry.

https://dx.doi.org/10.48550/arxiv.2105.14657