6533b828fe1ef96bd1288248

RESEARCH PRODUCT

Evidence forηc(2S)inψ(3686)→γKS0K±π∓π+π−

J. F. SunM. R. ShepherdE. H. ThorndikeF. LiF. C. MaY. DingM. H. YeL. Q. QinQ. ZhaoY. ZengY. Z. SunB. J. LiuXiang ZhouZhe SunG. R. LuC. HuJ. P. DaiC. L. MaJ. F. QiuY. B. ChenY. D. WangZ. G. ZhaoX. TangL. FavaX. L. JiS. P. YuGang ZhaoZ. A. ZhuXiaofeng ZhuJ. Z. ZhangL. Y. DongTalib HussainL. HuangZ. J. SunH. LoehnerM. QiD. H. SunC. GengQun-yao WangJoong-won ParkK. J. ZhuLili ZhangXuantong ZhangW. M. DingY. J. MaoY. G. XieZ. NingY. NefedovG. F. XuX. T. LiaoH. B. LiA. G. DenigC. L. LuoShou-hua ZhuX. L. WangM. H. GuZ. A. LiuH. Y. ShengS. X. DuR. Baldini FerroliC. X. YuS. JinB. ZhengR. G. PingY. BanP. WeidenkaffC. C. ZhangB. ZhongL. B. GuoP. FriedelQ. A. MalikX. H. MoL. S. WangS. P. WenX. S. QinX. R. ZhouJ. L. FuLei LiM. H. YeCheng LiJ. M. BianZhenyu ZhangJie YuQian LiuUlrich WiednerW. LaiM. L. ChenD. X. LinL. L. WangH. CaiJ. B. JiaoY. ZhangQ. AnB. S. ZouH. M. HuShan WangY. H. ZhengT. MaYanping HuangX. Y. SongQ. J. XuQ. P. JiXiangdong RuanI. B. NikolaevK. H. RashidA. CalcaterraN. WuKrisztian PetersC. S. JiCong-feng QiaoO. AlbayrakWei WuA. ZhemchugovA. ZhemchugovH. LiangM. ShaoY. T. GuLei ZhaoJ. C. LiJ. W. ZhangX. K. ZhouS. B. LiuQingnian XuMeng WangS. H. ZhangX. Y. ShenQ. J. LiB. Q. WangXiao-tong LuX. T. HuangM. AblikimA. A. ZafarY. L. HanG. RongP. L. WangQi-wen LüHongsheng ZhaoJ. ZhuangM. X. LuoN. Yu. MuchnoiFeng LiuX. N. LiR. PolingS. MaD. V. DedovichC. P. ShenC. P. ShenQ. P. JiH. H. ZhangG. A. ChelkovA. SarantsevD. H. WeiP. L. WangD. TothK. LiFang LiuI. DenysenkoHeng-yun YeJ. MinG. S. VarnerHang LiuY. H. ZhangHaiping PengJ. S. LangeJ. C. ChenJianping ZhengT. J. MinK. J. ZhuA. ZalloL. G. XiaYong-feng HuangYang QinH. B. LiuH. L. MaD. M. LiB. KopfI. U. UmanH. MuramatsuQ. G. WenX. L. LuoM. LvNasser Kalantar-nayestanakiB. D. SchaeferZhenli XuZ. XueY. X. XiaSanfeng WuZhiqing LiuJ. S. HuangY. H. GuanK. L. HeZ. Y. WangC. X. LiuM. PelizaeusC. Morales MoralesM. DestefanisTao LuoM. KornicerXuejun WangM. MaggioraY. T. LiangLing ZhaoJ. V. BennettS. J. ChenO. BondarenkoJ. F. ChangG. X. SunLi YanZ. Y. HeZ. L. HouYang YangD. Y. WangK. GoetzenZhiqiang LiuMiao HeW. KuehnM. BertaniZ. B. LiZhiyong ZhangY. F. LiangX. CaiX. R. LiB. X. YuB. Y. ZhangJifeng HuL. P. ZhouZ. JiaoFu-hu LiuD. H. ZhangD. P. JinL. H. WuX. LiuM. KavatsyukJ. Z. BaiG. M. XuR. ZhangC. Z. YuanZ. P. MaoZ. J. XiaoY.n. GaoW. GradlY. M. ZhuY. P. GuoY. B. ZhaoQ. M. MaH. P. ChengJ. FangT. GuoSerkant Ali CetinY. YuanY. S. ZhuB. X. ZhangH. S. ChenL. L. JiangY. Q. WangQiang ZhaoShujun ZhaoC. J. TangChangjin ZhangF. A. HarrisY. P. LuS. QianJialun PingKai LiuX. Y. ZhangXian ChenDayong WangP. L. LiuZ. ZhongM. G. ZhaoY. J. SunH. L. DaiIgor BoykoE. BogerE. BogerZujian WangB. SpruckX. H. ZhaoKe WangZ. G. WangC. NicholsonH. Y. ZhangV. V. BytevW. B. YanFenfen AnG. F. ChenT. C. ZhaoZhenghao ZhangM. N. AchasovJ. Q. ZhangJ. Y. ZhangM. UllrichS. PacettiY. K. HengG. R. LiaoH. J. LuJ. G. LuM. Y. DongF. F. JingH. B. LiuJ. H. ZouF. E. MaasT. HuS. S. SunMichael WernerJürgen BeckerQ. OuyangGuangming HuangR. E. MitchellZ. WuS. S. FangY. B. LiuQ. L. XiuY. P. ChuX. B. JiG. LiC. D. FuC. Q. FengZ. Y. DengXingguo LiH. X. YangHuihui LiuJ. P. LiuJ. G. MesschendorpG. S. HuangW. G. LiS. SpataroX. P. XuC. ZhuK. LiuH. M. LiuG. F. CaoA. Q. GuoX. Q. LiM. GrecoHao-ran YuM. LeyheZ. H. QinChuan LiuK. Y. LiuK. X. ZhaoJ. B. WeiS. L. OlsenRoy A. BriereX. S. JiangO. CakirY. F. WangX. Y. MaW. X. GongC. H. LiI. TapanS. L. LiY. H. YanJ. W. ZhaoD. Cronin-hennessyY. C. ZhuT. HeldD. J. AmbroseE. PrencipeW. D. LiFeng XueCui LiY. X. Yang

subject

PhysicsNuclear and High Energy PhysicsNuclear magnetic resonanceBranching fractionElectron–positron annihilationPiAnalytical chemistryRadiative transitionHigh Energy Physics::ExperimentNuclear Experiment

description

We search for the M1 radiative transition psi(3686) -> gamma eta(c)(2S) by reconstructing the exclusive eta(c)(2S) -> (KSK +/-)-K-0 pi(-/+)pi(+)pi(-) decay using 1.06 X 10(8) psi(3686) events collected with the BESIII detector. The signal is observed with a statistical significance of greater than 4 standard deviations. The measured mass of the eta(c)(2S) is 3646.9 +/- 1.6(stat) +/- 3.6(syst) MeV/c(2), and the width is 9.9 +/- 4.8(stat) +/- 2.9(syst) MeV/c(2). The product branching fraction is measured to be B(psi(3686) -> gamma eta(c)(2S)) X B(eta(c)(2S) -> gamma(KSK +/-)-K-0 pi(-/+)pi(+)pi(-) = (7.03 +/- 2.10(stat) +/- 0.70(syst)) X 10(-6). This measurement complements a previous BESIII measurement of psi(3686) -> gamma eta(c)(2S) with eta(c)(2S) -> (KSK +/-)-K-0 pi(-/+) and K+K-pi(0).

https://doi.org/10.1103/physrevd.87.052005