6533b7d9fe1ef96bd126cb24
RESEARCH PRODUCT
First observation of the isospin violating decayJ/ψ→ΛΣ¯0+c.c.
M. QiH. L. TianD. J. AmbroseK. LiFang LiuS. QianJialun PingE. PrencipeI. DenysenkoA. ZalloL. L. WangX. Y. ZhangS. MaW. D. LiZ. NingR. B. FerroliD. TothY. J. SunE. BogerE. BogerYang QinQ. M. MaH. B. LiZ. P. ZhengX. K. ZhouY. Q. WangB. Y. ZhangFeng XueCui LiYingchun ZhuA. G. DenigC. L. LuoA. Q. GuoXiao-tong LuH. X. YangH.s. XuZ. H. QinChuan LiuY. F. WangF. LiYuanbo ChenYu-bin LiuY. NefedovJ. F. SunY. H. ZhengY. F. LiangY. YuanY. S. ZhuF. FeldbauerXiaobo ZhuCong-feng QiaoZhiyong ZhangD. P. JinX. T. HuangM. AblikimA. A. ZafarG. RongChang LiuX. LiuC. C. ZhangB. ZhongL. B. GuoSanfeng WuY. ZengJ. S. HuangC. X. LiuMeng WangS. B. LiuZ. G. WangQun-yao WangT. R. ZhangM. Y. DongLei LiHuihui LiuJ. P. LiuJ. G. MesschendorpZ. J. XiaoY. P. GuoN. Yu. MuchnoiX. L. JiX. Y. MaW. X. GongP. L. LiuY. DingF. C. MaJ. Q. ZhangHeng-yun YeY. H. ZhangI. B. NikolaevK. H. RashidH. Y. ZhangM. ShaoY. T. GuSerkant Ali CetinUlrich WiednerXiang LiuX. Q. HaoX. TangZhe SunW. G. LiJ. MinH. B. LiuS. P. YuG. A. ChelkovG. A. ChelkovH. L. MaD. M. LiH. MaoZhiqing LiuJ. B. JiaoS. SpataroX. P. XuC. ZhuB. J. LiuH. M. LiuQ. G. WenH. J. LuJ. G. LuJ. F. HuG. F. CaoZ. A. LiuTalib HussainX. L. WangH. MuramatsuQ. J. LiJ. ZhongT. MaYanping HuangJie YuG. R. LuJ. F. ChangC. H. LiF. E. MaasZ. Y. WangT. HuJ. X. ZuoK. L. HeK. GoetzenW. KuehnY. B. ChenZ. H. AnXiaofeng ZhuJ. Z. ZhangA. SarantsevA. SarantsevH. H. LiuYao WangJ. C. LiKun LiuY. X. YangJ. H. ZouG. F. ChenD. H. WeiJ. S. LangeZ. A. ZhuS. S. SunY. BanP. WeidenkaffE. H. ThorndikeB. WangMichael WernerXiangdong RuanT. J. MinK. J. ZhuY. M. ZhuM. H. YeJ. Y. ZhangS. P. WenB. D. SchaeferY. G. XieJ. ZhuangM. L. ChenM. X. LuoX. CaiX. R. LiS. L. OlsenRoy A. BriereD. H. SunX. H. LiuGuangming HuangX. S. QinX. R. ZhouJ. L. FuCheng LiK. J. ZhuXuantong ZhangD. V. DedovichG. X. SunLi YanL. Y. DongM. R. ShepherdI. TapanX. S. JiangZ. JiaoFu-hu LiuD. H. ZhangZ. WuJ. F. QiuL. K. JiaJ. P. DaiS. X. DuY. T. LiangH. M. HuQ. ZhaoG. LiY. Z. SunC. L. MaM. BertaniL. FavaY. K. HengC. NicholsonS. L. LiN. WuO. CakirKrisztian PetersL. G. XiaZ. B. LiY. H. YanM. H. GuJ. W. ZhaoNicolas BergerZhenli XuG. F. XuW. M. DingS. J. ChenY. L. HanC. D. FuJ. ZhangO. BondarenkoM. KavatsyukShan WangC. MotzkoJ. W. ZhangC. Q. FengGang ZhaoX. F. TangY. S. ZhangJürgen BeckerM. UllrichZ. Y. DengH. Y. ShengS. JinR. E. MitchellH. H. ZhangC. X. YuC. GengY. J. MaoZ. G. ZhaoL. L. JiangM. GrecoHongsheng ZhaoQ. J. WangD. Cronin-hennessyXingguo LiW. GradlM. G. ZhaoG. S. VarnerB. X. ZhangR. PolingX. Y. SongZujian WangB. HuangX. H. MoL. S. WangHang LiuZ. J. SunH. LoehnerB. ZhengR. G. PingM. H. YeJulian SchulzeF. A. HarrisJ. Z. BaiJianping ZhengY. H. GuanB. Q. WangM. MaggioraB. SpruckX. H. ZhaoJoong-won ParkK. Y. LiuQ. P. JiY. ZhangQ. AnC. P. ShenC. P. ShenJ. M. BianZhenyu ZhangW. LaiM. LvK. X. ZhaoFeng LiuLing ZhaoL. H. WuLei ZhaoZ. Y. HeZ. L. HouY. B. ZhaoYang YangWei WuA. ZhemchugovA. ZhemchugovY. P. ChuS. H. ZhangX. Y. ShenX. B. JiZ. XueT. HeldM. DestefanisY.n. GaoJ. C. ChenNasser Kalantar-nayestanakiW. B. YanG. M. XuC. Z. YuanC. J. TangY. P. LuKai LiuP. L. WangC. Morales MoralesQi-wen LüQ. A. MalikS. PacettiZhiqiang LiuMiao HeM. N. AchasovL. P. ZhouY. M. MaZ. P. MaoH. P. ChengJ. FangShou-hua ZhuKe WangM. PelizaeusX. SunB. S. ZouV. V. BytevA. CalcaterraC. S. JiFenfen AnH. LiangT. C. ZhaoTao LuoB. X. YuH. S. ChenShujun ZhaoH. L. DaiIgor BoykoX. T. LiaoQ. J. XuX. N. LiHaiping PengG. R. LiaoF. F. JingW. L. YuanQ. OuyangS. S. FangY. B. LiuN. B. LiQ. L. XiuP. L. WangX. L. Luosubject
PhysicsBaryonNuclear and High Energy PhysicsBranching fractionIsospinElectron–positron annihilationQuark modelHyperonAnalytical chemistrySigmaHigh Energy Physics::ExperimentLambdadescription
Using a sample of (225.2 +/- 2.8) x 10(6) J/psi events collected with the BESIII detector, we present results of a study of J/psi -> gamma Lambda(Lambda) over bar and report the first observation of the isospin violating decay J/psi -> Lambda(Sigma) over bar (0) + c.c., in which (Sigma) over bar (0) decays to gamma (Lambda) over bar. The measured branching fractions are B(J/psi -> (Lambda) over bar Sigma(0)) = (1.46 +/- 0.11 +/- 0.12) x 10(-5) and B(J/psi -> Lambda(Sigma) over bar (0)) = (1.37 +/- 0.12 +/- 0.11) x 10(-5). We search for Lambda(1520) -> gamma Lambda decay, and find no evident signal, and an upper limit for the product branching fraction B(J/psi -> Lambda(Lambda) over bar (1520) + c.c) x B(Lambda(1520) -> gamma Lambda) Lambda in J/psi -> gamma eta(c), eta(c) -> Lambda(Lambda) over bar and measure the branching fraction B(eta(c) -> Lambda(Lambda) over bar) = (1.16 +/- 0.12(stat) +/- 0.19(syst) +/- 0.28(PDG)) x 10(-3).
year | journal | country | edition | language |
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2012-08-15 | Physical Review D |