您的位置: 专家智库 > >

国家自然科学基金(10625524)

作品数:9 被引量:3H指数:1
发文基金:国家自然科学基金国家重点基础研究发展计划中国科学院知识创新工程更多>>
相关领域:理学核科学技术一般工业技术机械工程更多>>

文献类型

  • 9篇中文期刊文章

领域

  • 8篇理学
  • 1篇机械工程
  • 1篇核科学技术
  • 1篇一般工业技术

主题

  • 6篇BES
  • 5篇J/Ψ
  • 3篇Π
  • 2篇NUMBER
  • 2篇DECAY
  • 2篇DECAYS
  • 2篇EVENTS
  • 2篇INCLUS...
  • 1篇Ψ(2S)
  • 1篇OBSERV...
  • 1篇RECENT
  • 1篇RESONA...
  • 1篇RESULT...
  • 1篇SEARCH
  • 1篇ALPHA
  • 1篇AMPLIT...
  • 1篇BE
  • 1篇CHARMO...
  • 1篇CROSS_...
  • 1篇DISTRI...

传媒

  • 8篇Chines...
  • 1篇Chines...

年份

  • 2篇2013
  • 2篇2012
  • 2篇2010
  • 1篇2009
  • 2篇2008
9 条 记 录,以下是 1-9
排序方式:
Recent results on light hadron spectroscopy from BESⅡ
2008年
We reported the observation of Y(2175) in Фfo(980) mass spectrum in J/ψ → ηФfo(980) with fo(980) →π+π^- and the observation of a broad 1^-- resonance of K^+K^- mass in J/ψ→ K^+K^-π^0. The results from the partial wave analyses of J/ψ→γπ^+π^- and γπ^0π^0, as well as J/ψ →pK^-∧. are also presented.
沈肖雁
关键词:RESONANCE
Search for exotic state 1^(-+) π_1(1400) at BESⅢ
2008年
The J/ψ hadronic decays provide good laboratory to search for the hybrid states with exotic quantum numbers. A full Partial Wave Analysis (PWA) is performed to the generated Monte Carlo J/ψ→ ρηπ data, based on the design of BESⅢ detector, to study the sensitivity of searching for a possible exotic state at BESⅢ.
张振霞刘宏邦吴宁俞国威沈肖雁郑汉青
Determination of the number of ψ' events at BES Ⅲ被引量:1
2013年
The number of φ' events accumulated by the BESIII experiment from March 3 through April 14, 2009, is determined by counting inclusive hadronic events. The result is 106.41×(1.00±0.81%)×10^6. The error is systematic dominant; the statistical error is negligible.
麦迪娜M.N.AchasovsO.AlbayrakD.J.Ambrose安芬芬安琪白景芝班勇J.BeckerJ.V.BennettN.BergerM.Bertani边渐鸣E.BogerO.BondarenkoI.BoykoR.A.BriereV.Bytev蔡啸O.CakirA.Calcaterra曹国富S.A.Cetin常劲帆G.Chelkov陈刚陈和生陈江川陈玛丽陈申见谌勋陈元柏程和平初元萍D.Cronin-Hennessy代洪亮代建平D.Dedovich邓子艳A.DenigI.DenysenkoM.Destefanis丁伟民丁勇董燎原董明义杜书先方建房双世L.Fava封常青R.B.FerroliP.Friedel傅成栋高原宁耿聪K.Goetzen龚文煊W.GradlM.Greco顾旻皓顾运厅管颖慧郭爱强郭立波郭暾郭玉萍韩艳良F.A.Harris何康林何苗何振亚T.Held衡月昆侯治龙胡琛胡海明胡继峰胡涛黄光明黄光顺黄金书黄亮黄性涛黄勇黄燕萍T.Hussain姬长胜纪全姬清平季晓斌季筱璐姜丽丽江晓山焦健斌焦铮金大鹏金山景繁凡N.Kalantar-NayestanakiM.KavatsyukB.KopfM.KornicerW.Kuehn赖蔚J.S.LangeM.Leyhe李春花李澄李翠李德民李飞李刚李海波李家才李康李蕾李秋菊李绍莉李卫东李卫国李晓玲李小男李学潜李秀荣李志兵梁昊梁勇飞梁羽铁廖广瑞廖小涛D.Lin(Lin)刘北江C.L.Liu刘春秀刘福虎刘芳刘峰刘虎刘宏邦刘汇慧刘怀民刘红薇刘觉平刘凯刘魁勇刘佩莲刘倩刘树彬刘翔刘玉斌刘振安刘志强刘智青H.Loehner鲁公儒
关键词:INCLUSIVEHADRON
Measurement of the integrated luminosities of the data taken by BESⅢ at √s=3.650 and 3.773 GeV
2013年
Data sets were collected with the BESⅢ detector at the BEPCⅡ collider at the center-of-mass energy of √s=3.650 GeV during May 2009 and at √s=3.773 GeV from January 2010 to May 2011. By analyzing the large angle Bhabha scattering events, the integrated luminosities of the two data sets are measured to be (44.49±0.02±0.44) pb-1 and (2916.94±0.18±29.17) pb-1, respectively, where the first error is statistical and the second error is systematic.
麦迪娜M.N.AchasovO.AlbayrakD.J.Ambrose安芬芬安琪白景芝R.Baldini Ferroli班勇J.BeckerJ.V.BennettM.Bertani边渐鸣E.BogerO.BondarenkoI.BoykoS.BraunR.A.BriereV.Bytev蔡浩蔡啸O.CakirA.Calcaterra曹国富S.A.Cetin常劲帆G.Chelkov陈刚陈和生陈江川陈玛丽陈申见陈旭荣陈元柏程和平初元萍D.Cronin-Hennessy代洪亮代建平D.Dedovich邓子艳A.DenigI.DenysenkoM.Destefanis丁伟民丁勇董燎原董明义杜书先方建房双世L.Fava封常青P.Friedel傅成栋傅金林O.Fuks高原宁耿聪K.Goetzen龚文煊W.GradlM.Greco顾旻皓顾运厅管颖慧郭爱强郭立波郭墩郭玉萍韩艳良F.A.Harris何康林何苗何振亚T.Held衡月昆侯治龙胡深胡海明胡继峰胡涛黄光明黄光顺黄金书黄亮黄性涛黄勇T.Hussain姬长胜纪全姬清平季晓斌季筱璐姜丽丽江晓山焦健斌焦铮金大鹏金山景繁凡N.Kalantar-NayestanakiM.KavatsyukB.KlossB.KopfM.KornicerW.Kuehn赖蔚J.S.LangeM.LaraP.LarinM.Leyhe李春花李澄李翠李德民李飞李刚李海波李家才李康李蕾李培荣李秋菊李卫东李卫国李晓玲李小男李学潜李秀荣李志兵梁昊梁勇飞梁羽铁廖广瑞D.X.LinLin刘北江C.L.Liu刘春秀刘福虎刘芳刘峰刘宏邦刘汇慧刘怀民刘觉平刘凯刘魁勇刘佩莲刘倩刘树彬刘翔刘玉斌刘振安刘志强刘智青
Charmonium results from BES
2010年
Using ~ 14 × 10^6 ψ(2S) and ~ 58 × 10^ J/ ψ data collected at BES Ⅱ/BEPC, the branching fraction of ψ(2S)→Ω-Ω^+ is measured with about 5a statistical significance. The A electric dipole and ∧ decay parameter are studied using the decay J/ψ →∧∧→ ppπ^+π^-. Using (106±3)× 10^6 ψ(2S) decays collected at BESⅢ/BEPC Ⅱ, we have obtained some interesting physics results. The branching fractions of XcJ→π^0π^0, ηη are measured with precision improved. The mass and width of he(l^1P1) state, together with the branching fractions of Br(ψ(2S) →π^0hc) and Br(hc →γηc) are the first measurements. Surprisingly, the decays of Xc1→φφ, ωω, and ωφ are firstly observed in BESⅢ data.
平荣刚
关键词:J/Ψ
Determination of the number of J/ψ events with J/ψ → inclusive decays
2012年
The number of J/ψ events collected with the BES detector at the BEPC from June 12 to July 28, 2009 is determined to be (225.3 ± 2.8) × 10^ 6 using J/ψ→inclusive events, where the uncertainty is the systematic error and the statistical one is negligible.
麦迪娜M. N. AchasovD. J. Ambrose安芬芬安琪安正华白景芝班勇J. BeckerN. BergerM. Bertani边渐鸣E. BogerO. BondarenkoI. BoykoR. A. BriereV. Bytev蔡啸A. Calcaterra曹国富常劲帆G. Chelkov陈刚陈和生陈江川陈玛丽陈申见陈晔陈元柏程和平初元萍D. Cronin-Hennessy代洪亮代建平D. Dedovich邓子艳A. DenigI. DenysenkoM. Destefanis丁伟民丁勇董燎原董明义杜书先方建房双世L. FavaF. Feldbauer封常青R. B. Ferroli傅成栋傅金林高原宁耿聪K. Goetzen龚文煊W. GradlM. Greco顾旻皓顾运厅管颖慧郭爱强郭立波郭玉萍韩艳良郝喜庆F. A. Harris何康林何苗何振亚T. Held衡月昆侯治龙胡海明胡继峰胡涛黄彬黄光明黄金书黄性涛黄燕萍T. Hussain姬长胜纪全季晓斌季筱璐贾卢魁姜丽丽江晓山焦健斌焦铮金大鹏金山景繁凡N. Kalantar-NayestanakiM. KavatsyukW. Kuehn赖蔚J. S. Lange潘振声李春花李澄李翠李德民李飞李刚李海波李家才李康李蕾李宁博李秋菊李绍莉李卫东李卫国李晓玲李小男李学潜李秀荣李志兵梁昊梁勇飞梁羽铁廖广瑞廖小涛刘北江C. L. Liu刘春秀刘春燕刘福虎刘芳刘峰刘虎刘宏邦刘汇慧刘怀民刘红薇刘觉平刘魁勇刘凯刘坤刘佩莲刘树彬刘翔刘晓海刘勇刘豫斌刘振安刘志强刘智青H. Loehner鲁公儒吕海江吕军光
Experimental sensitivity on searching for CP violation at BES-Ⅲ
2009年
The CP violation in the D system is predicted to be an unobserved level in the Standard Model. In this paper, we describe the method of searching for CP violation decay processes with the coherently produced D^0D^0 mesons from the ψ(3770) decay. The CP violation decay processes can be searched for at the BES-Ⅲ experiment. The experimental sensitivity for searching for the CP violation can reach about a 10^-4 level with a ψ(3770) data sample of about 20 fb^-1.
赵明刚荣刚马海龙张达华
Observation of a p mass threshold enhancement in ψ′→π+π-J/ψ(J/ψ→γp) decay被引量:2
2010年
The decay channel ψ′→ π 〉+π^-J/ψ(J/ψ 〉 γp^-p) is studied using a sample of 1.06 × 10^8 ψ′ events collected by the BESIII experiment at BEPCII. A strong enhancement at threshold is observed in the p^-p invariant mass spectrum. The enhancement can be fitted with an S-wave Breit-Wigner resonance function with a resulting peak mass of M = 1861-13^+6 (stat)-26^+7 (syst) MeV/c^2 and a narrow width that is Г 〈 38 MeV/c^2 at the 90% confidence level. These results are consistent with published BESII results. These mass and width values do not match with well established mesons.
麦迪娜M. N. Achasov安磊安琪安正华白景芝班勇N. Berger边渐鸣I. BoykoR. A. BriereV. Bytev蔡啸曹国富曹学香常劲帆G. Chelkov陈刚陈和生陈江川陈丽平陈玛丽陈鹏陈申见陈元柏初元萍D. Cronin-Hennessy代洪亮代建平D. Dedovich邓子艳I. DenysenkoM. Destefanis丁勇董燎原董明义杜书先段麦英方建封常青傅成栋傅金林高原宁耿聪K. Goetzen龚文煊M. GrecoS. Grishin顾运厅郭爱强郭立波郭玉萍韩少卿F. A. Harris何康林何苗何振亚衡月昆侯治龙胡海明胡继峰胡涛胡小为黄彬黄光明黄金书黄性涛黄燕萍姬长胜纪全季晓斌季筱璐贾卢魁姜丽丽江晓山焦健斌金大鹏金山S. KomamiyaW. KuehnS. Lange梁干庄李澄李翠李德民李飞李刚李海波李捷李家才李蕾李陆李秋菊李卫东李卫国李晓玲李小男李学潜李秀荣李玉晓李志兵梁昊梁泰然Y.T. Liang梁勇飞廖广睿廖小涛刘北江刘春秀刘春燕刘福虎刘芳刘峰刘冠川刘虎刘宏邦刘怀民刘红薇刘健刘觉平刘坤刘魁勇刘树彬刘晓海刘玉斌刘艳芳刘衍文刘勇刘振安鲁公儒吕军光吕绮雯吕晓睿卢云鹏罗成林罗民兴Zhejiang University罗涛罗小兰马长利马凤才马海龙马秋梅马想马骁妍M. Maggiora冒亚军毛泽普闵建莫晓虎N. Yu. MuchnoiY. Nefedov宁飞鹏S. L. Olsen欧阳群M. PelizaeusK. Peters
Measurement of J/ψ decays into Λ■ π^+π^-
2012年
Based on 58 million J/ψ events collected by the BESⅡ detector at the BEPC, J/ψ→ΛΛ π+π- is observed for the first time. The branching fraction is measured to be Br(J/ψ→ΛΛ π+π-)=(4.30±0.13±0.99)×10-3, excluding the decays to intermediate states, namely J/ψ→Ξ-Ξ+, J/ψ→Σ(1385)-Σ(1385)+, and J/ψ→Σ(1385)+Σ(1385)-. The branching fractions for these intermediate resonance channels are measured to be:Br(J/ψ→Ξ-Ξ+)=(0.90±0.03±0.18)×10-3, Br(J/ψ→Σ(1385)-Σ(1385)+)=(1.23±0.07±0.30)×10-3,and Br(J/ψ→Σ(1385)+Σ(1385)-)=(1.50±0.08±0.38)×10-3, respectively. The angular distribution is of the form dN/d(cosθ)α(1+αcos2θ) with α=(0.35±0.29±0.06) for J/ψ→Ξ-Ξ+, α=(-0.54±0.22±0.10) for J/ψ→Σ(1385)-Σ(1385)+, and α=(-0.35±0.29±0.06) for J/ψ→Σ(1385)+Σ(1385)-.
阿布里克木.麦迪娜白景芝白羽班勇蔡啸陈宏芳陈和生陈江川陈进陈元柏陈初萍戴又善邓子艳杜书先方建傅成栋高原宁顾运厅郭子敬F.A.Huarris何康林何瑁衡月昆胡海明T.Hussain胡涛黄光顺黄性涛黄燕萍季晓斌江晓山焦健斌金大鹏金山李刚李海波李金李蕾李仁英李卫东李卫国李晓玲李小男李学潜梁勇飞刘北江刘春秀刘芳刘峰刘宏邦刘怀民刘觉平刘倩刘荣光刘振安吕峰鲁公儒吕军光罗成林马凤才马海龙马秋海M.Q.A.Malik毛泽普莫晓虎聂晶S.L.Olsen平荣刚邱进发荣刚阮向东单连友尚雷沈成平沈肖雁盛华义孙海生孙胜森孙永昭孙志嘉唐晓田俊平G.S.Varner万霞王岚王亮亮王灵淑王平王佩良王贻芳王铮王至勇魏诚林魏代会吴宁许国发俆新平俆晔阎沐霖杨洪勋杨明杨永栩叶铭汉叶云秀喻纯旭苑长征袁野曾云张丙新张炳云张长春张达华张华桥章红宇张家文张建勇张学尧张一云张子平赵京伟赵明刚赵平平赵政国郑波郑海青郑建平郑志鹏钟彬周莉朱科军朱启明朱兴旺朱永生朱自安邹冰松
共1页<1>
聚类工具0