6533b835fe1ef96bd129fd61

RESEARCH PRODUCT

Observation of the doubly radiative decay η′→γγπ0

X. K. ChuY. D. WangStephen Lars OlsenWei LiZhenjun XiaoG. A. ChelkovG. A. ChelkovG. A. ChelkovL. L. MaL. GongDahua ZhangJianbei LiuW. ShanDan BennettZ. Y. WangFrancesca De MoriLibo GuoA. AmorosoMichael PapenbrockI. UmanI. GarziaShi ChenH. X. YangBo ZhengBo ZhengBo ZhengQ. A. MalikG. MezzadriW. C. YanBingxin ZhangA. DbeyssiB. J. LiuGang ChenTao HuB. C. KeI. TapanPeilian LiuS. LiuZ. WangG. CibinettoQiang ZhaoS. NisarZ. P. MaoH. LiangL. YanManuel LaraMichela GrecoJ. W. ZhaoC. B. ZhangJ. H. LiuMing QiQ. J. XuX. SunRonggang PingHuihui LiuJ. G. MesschendorpMauro Savrié Savri 'EGuofa XuEd ThorndikeY. M. MaHaiping PengJ. FangNasser Kalantar-nayestanakiYang GaoD. X. LinAlexey ZhemchugovM. KornicerZ. L. DouPeirong LiL. ZottiXuan ZhangL. J. WuT. HussainW. X. GongJ. LiH. Y. ZhangL. H. WuShengsen SunXiaolu JiP. L. WangX. L. LuoJ. B. LiuDapeng JinXiaozhong HuangFabrizio BianchiChang-zheng YuanY. J. MoH. XiaoW. D. LiJ. L. HuA. JulinY. HuKai LiuXin FangG. S. VarnerR. P. GuoY. H. XieAndrzej KupscJ. Z. BaiP. F. DuanF. H. HeinsiusFenfen AnZ. GaoZ. GaoS. L. NiuF. Y. LiX. D. RuanZhenghao ZhangTao LuoAchim DenigWei WangXinying SongS. MarcelloDong WangL. Y. LiuFang LiuF. Y. LiAlperen YüncüJin LiX. Y. GaoYuanyuan LiuShujun ZhaoJ. P. DaiJ. P. DaiLigang XiaZhe NingZhengguo ZhaoM. L. ChenX. N. LiY. F. WangP. WangMing ShaoL. G. XiaY. X. XiaS. H. ZhuFengcai MaZhiqing LiuD. J. AmbroseX. W. TangZongyuan WangH. R. QiH. J. LuJiawen ZhangHailong MaG. X. SunYuekun HengD. XiaoBing-song ZouQ. OuyangBin WangH. S. ChenH. L. DaiIgor BoykoXiaocong AiA. Q. GuoN. Y.-u. MuchnoiX. B. MaYongzhao SunS. S. FangXiao-rui LyuO. BakinaK. J. ZhuY. B. LiuJingzhou FanX. Q. HaoZ. L. HouM. YeL. FavaM. H. GuA. A. ZafarHuanhuan LiuYongjie Sun SunM. AlbrechtJingwei ZhaoHaijun YangZhonghua QinC.-h. RosnerSerkant Ali CetinP. X. ShenQ. M. MaZhigang WangH. Q. ZhangZ. J. SunMingming MaP. LarinMagnus WolkeCui LiO. B. KolcuL. Z. WangYe YuanK. H. RashidX. H. MoY. F. LiangW. B. YanM. N. AchasovM. N. AchasovGiulietto FeliciZhenan LiuQ. P. JiChen HuX. Y. NiuK. SchoenningY. H. GuanYang ZhangKlaus PetersNiklaus BergerY. S. ZhuM. MaggioraG. R. LiaoYu LuJ. LiuStefano SpataroZhibing LiQ. L. XiuGang LiD. Y. WangHongbang LiuD. BettoniF. E. MaasTianchi ZhaoJunguang LuA. CalcaterraX. P. XuM. TiemensYong BanC. LengJ. F. QiuYong DingYu ZhangTord JohanssonM. G. ZhaoZhenyu ZhangOrhan CakirLei ZhaoN. QinKun ZhangP. KieseC. S. YuS. PacettiJialun PingC. F. LiuYingchun ZhuKe WangQ. P. JiZhe ZengZ. A. ZhuZ. Y. WangJing DongSen QianMeng WangX. K. ZhouDong LiuP. PatteriJ. W. ZhangH. Y. ShengB. Q. WangXiaokang ZhouR. A. BriereJian ZhuangG. S. HuangHao CaiJingzhou ZhaoP. MusiolWalter Ikegami AnderssonR. KliemtKe LiC. SchnierJ. F. ChangF. A. HarrisH. LeithoffZ. Y. YouV. PrasadY. Q. WangH. H. LiuLi ZhouLei ZhangJie YuXianglei ZhuG. F. CaoE. BogerE. BogerY. NefedovP. WeidenkaffY. S. ZhangBing LiuXinchou LouM. AblikimG. RongC. F. RedmerL. L. JiangShuang HanH. M. HuYue GuoC. P. ShenI. DenysenkoWolfgang Kuehn K \\"UhnX. S. JiangYunpeng LuX. S. QinZahra HaddadiX. R. ZhouY.l. LiYun ZengX. D. ChenCheng LiChangjian TangShan JinYao ZhangTian MaZ.q. ZhangSai-juan ChenY. PanYanchu WangGuang ZhaoTobias WeberC. D. FuC. Q. FengJ. J. XuJ. ChaiJ. V. BennettZ. Y. DengM. RipkaZ. JiaoFu-hu LiuM. Y. DongY.y. ZhangJunfeng SunYangheng ZhengJianbin JiaoWeimin SongXiongfei WangH. H. LiY. X. YangM. H. YeL. Y. DongF. FeldbauerWeiping WangKai ZhuZ. L. HuangFeng LiuJ. C. ChenXiang LiuW. J. ZhengX. Y. JiangXiao CaiJiaheng ZouF. NerlingBoxiang YuYi FangT. J. MinI. B. NikolaevJ. H. YinY. T. LiangC. MoralesY. T. GuXingyu ZhouQ. J. LiR. PolingE. FioravantiJianping ZhengM. FritschX. L. KangA. SarantsevD. H. WeiS. ZhuJ. ZhangM. KavatsyukJ. G. ZhangS. X. DuK. Y. LiuLei XuB. X. ZhangM. DestefanisL. L. WangC. DongS. SosioJoachim PetterssonXingtao HuangB. KlossHai-bo LiC. L. LuoYuanbo ChenJianming BianThomas HeldB. ZhongRyan MitchellLei LiJ. S. HuangUlrich WiednerQingnian XuXiaoyan MaY. H. YanK. GoetzenM. X. LuoD. V. DedovichY. GuoXue-qian LiQian LiuL. Q. QinYajun MaoTeng LiRinaldo Baldini FerroliY. J. ZhangJingzhi ZhangYubin ZhaoJ. MinKanglin HeLing ZhaoB. KopfCong-feng QiaoO. AlbayrakZ. J. SunH. LoehnerJ. M. ZhangX. S. KangXin ChenX.s. LiJens Sören LangeX. Y. ShenM. BertaniL. YangW. GradlT. HoltmannQ. GaoQ. AnJ. Y. ZhangYuehong XieS. P. WenX. B. JiZ. WuR. FarinelliD. M. LiH. MuramatsuM. PelizaeusS. AhmedKang LiS. Q. ZhangA. HafnerQ. Zhao

subject

PhysicsMeson010308 nuclear & particles physicsBranching fractionAstrophysics::High Energy Astrophysical PhenomenaElectron–positron annihilationRadiative decay01 natural sciencesOmegaGamma gammaNuclear physics0103 physical sciencesPiHigh Energy Physics::ExperimentNuclear Experiment010306 general physics

description

Based on a sample of 1.31 billion J/psi events collected with the BESIII detector, we report the study of the doubly radiative decay eta' -> gamma gamma pi(0) for the first time, where the eta' meson is produced via the J/psi -> gamma eta' decay. The branching fraction of eta' -> gamma gamma pi(0) inclusive decay is measured to be B(eta' -> gamma gamma pi(0))(Incl) = (3.20 +/- 0.07(stat) +/- 0.23(sys)) x 10(-3), while the branching fractions of the dominant process eta' -> gamma omega and the non-resonant component are determined to be B(eta' -> gamma omega) x B(omega -> gamma pi(0)) = (23.7 +/- 1.4(stat) +/- 1.8(sys)) x 10(-4) and B(eta' -> gamma gamma pi(0))(NR) = (6.16 +/- 0.64(stat) +/- 0.67(sys)) x 10(-4), respectively. In addition, the M-gamma gamma(2)-dependent partial widths of the inclusive decay are also presented.

yearjournalcountryeditionlanguage
2017-07-26Physical Review D
https://doi.org/10.1103/physrevd.96.012005