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强电场对夸克胶子等离子体中粲夸克偶素演化的影响
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作者 武表钢 陈保义 赵行波 《原子核物理评论》 CAS CSCD 北大核心 2019年第3期278-288,共11页
在极端相对论性重离子碰撞中,高速运动的重离子会产生很强的电场。在碰撞的早期电场强度大小在eE~mπ^2的量级。在夸克胶子等离子体中,强电场将会对粲夸克偶素的演化产生巨大的影响。我们用含时薛定谔方程计算夸克胶子等离子体中由高速... 在极端相对论性重离子碰撞中,高速运动的重离子会产生很强的电场。在碰撞的早期电场强度大小在eE~mπ^2的量级。在夸克胶子等离子体中,强电场将会对粲夸克偶素的演化产生巨大的影响。我们用含时薛定谔方程计算夸克胶子等离子体中由高速运动电荷所产生强电场对重夸克偶素演化的影响。此电场可以导致不同角动量态之间的跃迁。为了研究此效应,我们比较了有电场和无电场情况下J/ψ、ψ′以及χc的产额。计算结果表明,在碰撞早期电场会导致J/ψ解离;同时,χc也会由电场导致的J/ψ的跃迁而产生。 展开更多
关键词 粲夸克 强电场 夸克胶子等离子体 薛定谔方程
Charmonium dissociation in collisions with φ mesons in hadronic matter
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作者 季石涛 许晓明 《中国物理C:英文版》 SCIE CAS CSCD 2017年第2期105-111,共7页
在 hadronic 物质的 -charmonium 分离反应被学习。Unpolarised 生气的节为,或,,,或,,,或,,或并且在出生的近似被计算,在夸克交换机制并且与一个温度依赖者夸克潜力。潜力导致生气的节的显著温度依赖。与生气的节和分发功能... 在 hadronic 物质的 -charmonium 分离反应被学习。Unpolarised 生气的节为,或,,,或,,,或,,或并且在出生的近似被计算,在夸克交换机制并且与一个温度依赖者夸克潜力。潜力导致生气的节的显著温度依赖。与生气的节和分发功能,我们在 hadronic 物质在和介子的相互作用计算 charmonia 的分离率。温度和 charmonium 动量上的率的依赖与对 charmonium 抑制的介子的影响相关。 展开更多
关键词 粲夸克 Φ介子 强子物质 碰撞 分离 QUARK J/ψ 动量
Exotic vector charmonium and its leptonic decay width
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作者 陈莹 邱伟峰 +1 位作者 宫明 桂龙成 《中国物理C:英文版》 SCIE CAS CSCD 2016年第8期11-19,共9页
We propose a novel type of interpolating field operator,which manifests the hybrid-like configuration that the charm quark-antiquark pair recoils against gluonic degrees of freedom.A heavy vector charmonium-like state... We propose a novel type of interpolating field operator,which manifests the hybrid-like configuration that the charm quark-antiquark pair recoils against gluonic degrees of freedom.A heavy vector charmonium-like state with a mass of 4.33(2) GeV is disentangled from the conventional charmonium states in the quenched approximation.This state has affinity for the hybrid-like operators but couples less to the relevant quark bilinear operator.We also try to extract its leptonic decay constant and give a tentative upper limit that it is less than one tenth of that of J/ψ,which corresponds to a leptonic decay width about dozens of eV.The connection of this state with X(4260) is also discussed. 展开更多
关键词 衰变宽度 轻子 矢量 双线性算子 奇异 粲夸克 夸克
Measurements of the center-of-mass energies at BESIII via the di-muon process
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作者 麦迪娜 M.N.Achasov +148 位作者 X.C.Ai O.Albayrak M.Albrecht D.J.Ambrose A.Amoroso 安芬芬 安琪 白景芝 R.BaldiniFerroli 班勇 D.W.Bennett J.V.Bennett M.Bertani D.Bettoni 边渐鸣 F.Bianchi E.Boger I.Boyko R.A.Briere 蔡浩 蔡啸 O.Cakir A.Calcaterra 曹国富 S.A.Cetin 常劲帆 G.Chelkov 陈刚 陈和生 陈海云 陈江川 陈玛丽 陈申见 谌炫 陈旭荣 陈元柏 程和平 褚新坤 G.Cibinetto 代洪亮 代建平 A.Dbeyssi D.Dedovich 邓子艳 A.Denig I.Denysenko MDestefanis F.DeMori 丁勇 董超 董静 董燎原 董明义 杜书先 段鹏飞 范荆州 方建 房双世 方馨 方易 L.Fava F.Feldbauer G.Felici 封常青 E.Fioravanti M.Fritsch 傅成栋 高清 高鑫磊 高旭阳 高原宁 高榛 I.Garzia K.Goetzen 龚文煊 W.Gradl M.Greco 顾旻皓 顾运厅 管颖慧 郭爱强 郭立波 郭玥 郭玉萍 Z.Haddadi A.Hafner 韩爽 郝喜庆 F.A.Harris 何康林 T.Held 衡月昆 侯治龙 胡琛 胡海明 胡继峰 胡涛 胡誉 黄光明 黄光顺 黄金书 黄性涛 黄勇 T.Hussain 纪全 姬清平 季晓斌 季筱璐 姜鲁文 江晓山 蒋兴雨 焦健斌 焦铮 金大鹏 金山 T.Johansson A.Julin N.Kalantar-Nayestanaki 康晓琳 康晓珅 M.Kavatsyuk B.C.Ke P.Kiese R.Kliemt B.Kloss O.B.Kolcu B.Kopf M.Kornicer W.Kuhn A.Kupsc J.S.Lange M.Lara P.Larin C.Leng 李翠 李澄 李德民 李飞 李峰云 李刚 李海波 李家才 李瑾 李康 李科 李蕾 李培荣 李腾 李卫东 《中国物理C:英文版》 SCIE CAS CSCD 2016年第6期1-8,共8页
From 2011 to 2014,the BESIII experiment collected about 5 fb-1 data at center-of-mass energies around 4 GeV for the studies of the charmonium-like and higher excited charmonium states.By analyzing the di-muon process ... From 2011 to 2014,the BESIII experiment collected about 5 fb-1 data at center-of-mass energies around 4 GeV for the studies of the charmonium-like and higher excited charmonium states.By analyzing the di-muon process e+e- → Yisr/fsr μ+μ-,the center-of-mass energies of the data samples are measured with a precision of 0.8 MeV.The center-of-mass energy is found to be stable for most of the time during data taking. 展开更多
关键词 能量测量 实验中心 质量 子过程 粲夸克 精密测量 能量中心 数据样本
Decay rates of charmonia within a quark-antiquark confining potential
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作者 Smruti Patel P. C. Vinodkumar Shashank Bhatnagar 《中国物理C:英文版》 SCIE CAS CSCD 2016年第5期14-23,共10页
In this work, we investigate the spectroscopy and decay rates of charmonia within the framework of the non-relativistic Schro¨dinger equation by employing an approximate inter quark-antiquark potential. The spin ... In this work, we investigate the spectroscopy and decay rates of charmonia within the framework of the non-relativistic Schro¨dinger equation by employing an approximate inter quark-antiquark potential. The spin hyperfine, spin-orbit and tensor components of the one gluon exchange interaction are employed to compute the spectroscopy of the excited S states and a few low-lying P and D waves. The resultant wave functions at zero interquark separation as well as some finite separations are employed to predict the di-gamma, di-leptonic and di-gluon decay rates of charmonia states using the conventional Van Royen-Weisskopf formula. The di-gamma and di-leptonic decay widths are also computed by incorporating the relativistic corrections of order v4 within the NRQCD formalism.We have observed that the NRQCD predictions with their matrix elements computed at finite radial separation yield results which are found to be in better agreement with experimental values for both di-gamma and di-leptonic decays.The same scenario is seen in the case when di-gamma and di-leptonic decay widths are computed with the Van RoyenWeisskopf formula. It is also observed that the di-gluon decay width with the inclusion of binding energy effects are in better agreement with the experimental data available for 1S-2S and 1P. The di-gluon decay width of 3S and 2P waves waves are also predicted. Thus, the present study of decay rates clearly indicates the importance of binding energy effects. 展开更多
关键词 粲夸克 衰变率 夸克 禁闭势 自旋-轨道 张量计算 衰变宽度 薛定谔方程
ψ(3770)非D衰变的研究(英文)
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作者 杨玉娇 郑翔宇 郭永新 《南开大学学报:自然科学版》 CAS CSCD 北大核心 2016年第1期49-53,共5页
讨论了几个ψ(3 770)非D衰变的问题,强调了ψ(3 770)非D衰变的知识对于了解粲夸克偶素衰变动力学的重要性.
关键词 非D衰变 粲夸克 跃迁
NLO QCD corrections to ηc+hc(1P)/ψ1,2(1D) production at B-factories
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作者 陈龙斌 蒋军 乔从丰 《中国物理C:英文版》 SCIE CAS CSCD 2015年第10期10-14,共5页
We calculate the next-to-leading order(NLO) quantum chromodynamics(QCD) corrections to double charmonium production processes e+e-→γ*→ηc+hc(1P)/ψ1,2(1D) within the non-relativistic QCD(NRQCD)factorization framewo... We calculate the next-to-leading order(NLO) quantum chromodynamics(QCD) corrections to double charmonium production processes e+e-→γ*→ηc+hc(1P)/ψ1,2(1D) within the non-relativistic QCD(NRQCD)factorization framework. We find that the corrections to ηc+hc(1P) production are positive, while those to ηc+ψ1,2(1D)are negative. Unlike the J/ψ+ηc case, all the corrections here are not large. Uncertainties in the renormalization scale, quark mass and running energy of center-of-mass are discussed, and the scale dependence of these processes is found to be greatly reduced with the NLO QCD corrections. 展开更多
关键词 QCD修正 生产工艺 NLO 非相对论量子色动力学 HC 粲夸克 工厂 质量中心
Precision measurement of the integrated luminosity of the data taken by BESIII at center-of-mass energies between 3.810 GeV and 4.600 GeV
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作者 M.Ablikim(麦迪娜) M.N.Achasov +142 位作者 艾小 聪 O.Albayrak M.Albrecht D.J.Ambros e A.Amoroso 安芬芬 安琪 白景 芝 R.Baldini Ferroli 班 勇 D.W.Bennett J.V.Bennett M.Berta ni D.Bettoni 边渐 鸣 F.Bianchi E.Boger O.Bondarenk o I.Boyko R.A.Briere 蔡浩 蔡 啸 O.Cakir A.Calcaterra 曹国 富 S.A.Cetin 常劲帆 G.Chelkov 陈刚 陈和生 陈海云 陈江川 陈玛 丽 陈申见 谌炫 陈旭荣 陈元 柏 程和平 褚新 坤 G.Cibinetto D.Cronin-Hennessy 代洪亮 代建 平 A.Dbeyssi D.Dedovich 邓子 艳 A.Denig I.Denysenko M.Destefan is F.De Mori 丁勇 董超 董 静 董燎原 董明义 杜书先 段鹏 飞 范荆州 方建 房双世 方馨 方 易 L.Fava F.Feldbauer G.Felici 封常青 E.Fioravanti M.Fritsch 傅成栋 高清 高原宁 高 榛 I.Garzia 耿聪 K.Goetzen 龚 文煊 W.Gradl M.Greco 顾旻皓 顾运厅 管颖慧 郭爱强 郭立波 郭 玥 Y.P.Guo Z.Haddadi A.Hafner 韩爽 韩艳良 郝喜庆 F.A.Harris 何康林 何振亚 T.Held 衡月昆 侯 治龙 胡琛 胡海明 胡继峰 胡 涛 胡誉 黄光明 黄光顺 黄海 鹏 黄金书 黄性涛 黄 勇 T.Hussain 纪全 姬清平 季晓 斌 季筱璐 姜丽丽 姜鲁文 江晓 山 焦健斌 焦铮 金大鹏 金 山 T.Johansson A.Julin N.Kalantar- Nayestanaki 康晓琳 康晓 珅 M.Kavatsyuk B.C.Ke R.Kliemt B.Kloss O.B.Kolcu B.Kopf M.Korni cer W.Kuehn A.Kupsc 赖 蔚 J.S.Lange M.Lara P.Larin C.Le ng 李春花 李澄 李德民 李飞 李� 《中国物理C:英文版》 SCIE CAS CSCD 2015年第9期1-7,共7页
From December 2011 to May 2014, about 5 fb-1of data were taken with the BESIII detector at center-ofmass energies between 3.810 Ge V and 4.600 Ge V to study the charmonium-like states and higher excited charmonium sta... From December 2011 to May 2014, about 5 fb-1of data were taken with the BESIII detector at center-ofmass energies between 3.810 Ge V and 4.600 Ge V to study the charmonium-like states and higher excited charmonium states. The time-integrated luminosity of the collected data sample is measured to a precision of 1% by analyzing events produced by the large-angle Bhabha scattering process. 展开更多
关键词 能量中心 测量精度 数据集成 光度 粲夸克 时间积分 数据样本 探测器
ηc→e^+e^-μ^+μ^-衰变研究
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作者 朱海文 张振宇 揭泉林 《武汉大学学报:理学版》 CAS CSCD 北大核心 2015年第5期419-422,共4页
粲夸克偶素的能谱对于理解量子色动力学理论提供了一个很重要的检验根据.本文根据赝标介子到双虚光子过程的Lorentz结构在强子层面计算了ηc→e^+e^-μ^+μ^-过程散射振幅,讨论了基于单极点及双极点矢量介子为主模型以及量子色动力学... 粲夸克偶素的能谱对于理解量子色动力学理论提供了一个很重要的检验根据.本文根据赝标介子到双虚光子过程的Lorentz结构在强子层面计算了ηc→e^+e^-μ^+μ^-过程散射振幅,讨论了基于单极点及双极点矢量介子为主模型以及量子色动力学模型的形式因子对衰变宽度及其随不变质量分布的影响,得到单极点及双极点形式因子对ηc→e^+e^-μ^+μ^-过程的衰变宽度,预言分别为3.248×10^-7MeV和2.426×10^-6MeV,双极点形式因子预言的不变质量分布在ρ介子质量区域有明显的峰状分布. 展开更多
关键词 粲夸克 赝标量介子 矢量介子为主模型 达利兹衰变
A unified model with a generalized gauge symmetry and its cosmological implications
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作者 Jong-Ping Hsu Kazuo O.Cottrell 《中国物理C:英文版》 SCIE CAS CSCD 2015年第10期68-76,共9页
A unified model is based on a generalized gauge symmetry with groups [SU3c ]color×(SU2×U1)×[U1b×U1l].It implies that all interactions should preserve conservation laws of baryon number, lepton numb... A unified model is based on a generalized gauge symmetry with groups [SU3c ]color×(SU2×U1)×[U1b×U1l].It implies that all interactions should preserve conservation laws of baryon number, lepton number, and electric charge, etc. The baryonic U1 b, leptonic U1 l and color SU3 c gauge transformations are generalized to involve nonintegrable phase factors. One has gauge invariant fourth-order equations for massless gauge fields, which leads to linear potentials in the [U1b ×U1l] and color [SU3c ] sectors. We discuss possible cosmological implications of the new baryonic gauge field. It can produce a very small constant repulsive force between two baryon galaxies(or between two anti-baryon galaxies), where the baryon force can overcome the gravitational force at very large distances and leads to an accelerated cosmic expansion. Based on conservation laws in the unified model, we discuss a simple rotating dumbbell universe with equal amounts of matter and anti-matter, which may be pictured as two gigantic rotating clusters of galaxies. Within the gigantic baryonic cluster, a galaxy will have an approximately linearly accelerated expansion due to the effective force of constant density of all baryonic matter. The same expansion happens in the gigantic anti-baryonic cluster. Physical implications of the generalized gauge symmetry on charmonium confining potentials due to new SU3 c field equations, frequency shift of distant supernovae Ia and their experimental tests are discussed. 展开更多
关键词 统一模型 宇宙学 对称性 广义 宇宙加速膨胀 不可积相位因子 守恒定律 粲夸克
高能碰撞J/ψ粒子的产生与能量损失效应 预览
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作者 刘植凤 苗文丹 刘娜 《华中师范大学学报:自然科学版》 CAS 北大核心 2013年第5期636-638,共3页
根据色蒸发产生机制、应用能量损失的上限值计算了RHIC和HERA上J/Ψ粒子产生中核效应α的xF分布,并与实验数据进行了对比.研究表明:给定初态能量损失上限,较之HERA的结论,RHIC的计算与实验吻合更好,反映出后者的末态效应较弱.加入末态... 根据色蒸发产生机制、应用能量损失的上限值计算了RHIC和HERA上J/Ψ粒子产生中核效应α的xF分布,并与实验数据进行了对比.研究表明:给定初态能量损失上限,较之HERA的结论,RHIC的计算与实验吻合更好,反映出后者的末态效应较弱.加入末态效应后均有所改观,表明解释J/Ψ粒子产值的抑制还需要考虑其它的介质效应. 展开更多
关键词 色蒸发模型 能量损失效应 核遮蔽效应 粲夸克
在线阅读 下载PDF
Analysis of Vector Meson Transitions Among Heavy Quarkonium States 预览
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作者 王志刚 《理论物理通讯:英文版》 SCIE CAS CSCD 2012年第1期 93-101,共9页
在这篇文章,我们与重夸克在 charmonium 和 bottomonium 状态之中学习向量介子转变以一个系统的方法的有效理论,并且在一根特殊多重谱线的向量介子腐烂宽度之中为比率做预言到另一根多重谱线。预言以后能与试验性的数据被面对。
关键词 夸克 矢量介子 视线分析 粲夸克 衰变宽度 实验数据 预测 多重
在线阅读 下载PDF
Study of the heavy molecular states in the quark model with meson exchange interaction
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作者 余思海 王保凯 +1 位作者 陈晓林 邓卫真 《中国物理C:英文版》 SCIE CAS CSCD 2012年第1期 25-30,共6页
Some charmonium-like resonances such as X(3872) can be interpreted as possible D (*)  (*) molecular states.Within the quark model,we study the structure of such molecular states and the similar B (*)  (*) molecula... Some charmonium-like resonances such as X(3872) can be interpreted as possible D (*)  (*) molecular states.Within the quark model,we study the structure of such molecular states and the similar B (*)  (*) molecular states by taking into account the light meson exchange (π,η,ρ,ω and σ) between two light quarks from different mesons. 展开更多
关键词 分子状态 介子交换 夸克模型 交换相互作用 粲夸克 夸克 共振 类似
1 - 7 Does Enhancement Observed in γγ→DD Contain Two P-wave Higher Charmonia? 预览
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作者 Chen Dianyong 《中国科学院近代物理研究所和兰州重离子研究装置年报:英文版》 2012年第1期12-13,共2页
关键词 AEA 波高 粲夸克 P波
在线阅读 下载PDF
Heavy quarkonia spectra and their decays in a relativistic quark model
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作者 Bhaghyesh K. B. Vijaya Kumar Antony Prakash Monteiro 《中国物理C:英文版》 SCIE CAS CSCD 2011年第11期 997-1003,共7页
Using the phenomenological relativistic harmonic model (RHM) for quarks, we have obtained the masses of S wave charmonium and bottomonium states. The full Hamiltonian used in the investigation has Lorentz scalar plus ... Using the phenomenological relativistic harmonic model (RHM) for quarks, we have obtained the masses of S wave charmonium and bottomonium states. The full Hamiltonian used in the investigation has Lorentz scalar plus vector confinement potential, along with the confined one gluon exchange potential (COGEP). A good agreement with the experimental masses for the ground and the radially excited states is obtained both for the triplet and singlet S wave mesons. The decay properties of the ground state charmonium and bottomonium are investigated. 展开更多
关键词 相对论夸克模型 衰变性质 光谱 粲夸克 谐波模型 人民群众 现象学
The dependence of J/ψ-nucleon inelastic cross section on the Feynman variable
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作者 DUAN Chun-Gui LIU Na MIAO Wen-Dan 《中国物理C:英文版》 SCIE CAS CSCD 2011年第9期804-807,共4页
借助于原子 parton 分发功能的二个典型集合,同时考虑横梁质子的精力损失和 charmonium 的原子吸收声明在 Glauber 模型的一致框架穿越原子物质,现象学的分析在J/生产上在 E866 试验性的数据的颜色蒸发模型被给的一份领先的订单微分... 借助于原子 parton 分发功能的二个典型集合,同时考虑横梁质子的精力损失和 charmonium 的原子吸收声明在 Glauber 模型的一致框架穿越原子物质,现象学的分析在J/生产上在 E866 试验性的数据的颜色蒸发模型被给的一份领先的订单微分生气的节比率 RFe/Be ( xF )。RFe/Be (xF ) 上的横梁质子的精力损失效果是比在高 Feynman 可变 xF 区域的 parton 分发功能上的原子效果更重要的,这被显示出。J/-nucleon 无弹性的生气的节取决于 Feynman 可变 xF 并且在区域 xF 与 xF 线性地增加,这被发现 > 0.2。 展开更多
关键词 非弹性截面 费曼 核子 部分子分布函数 GLAUBER模型 能量损失 粲夸克 实验数据
Evidence for further charmonium vector resonances
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作者 Eel van Bevere George Rupp 《中国物理C:英文版》 SCIE CAS CSCD 2011年第4期319-324,共6页
We discuss the shape of threshold signals in production cross sections of the reaction e+e- → D* Dˉ*, at the opening of the Ds* Dˉs* and Λc+ Λ+c channels. Furthermore, evidence for the ψ(3D), ψ(5S), ψ(4D), ψ(... We discuss the shape of threshold signals in production cross sections of the reaction e+e- → D* Dˉ*, at the opening of the Ds* Dˉs* and Λc+ Λ+c channels. Furthermore, evidence for the ψ(3D), ψ(5S), ψ(4D), ψ(6S), ψ(5D), ψ(7S), ψ(6D), and ψ(8S) new charmonium vector resonances is presented, on the basis of data recently published by the BABAR Collaboration. Central masses and resonance widths are estimated. Confirmation of these resonances would be a huge step in lifting the precision level of hadron spectroscopy towards that of atomic spectroscopy, with far-reaching consequences for theory. 展开更多
关键词 粲夸克 共振 载体 证据 截面形状 宽度估计 人民群众 原子光谱
Fast computation of observed cross section for ψ′ → PP decays
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作者 WANG Bo-Qun MO Xiao-Hu +1 位作者 WANG Ping BAN Yong 《中国物理C:英文版》 SCIE CAS CSCD 2011年第5期411-418,共8页
It has been conjectured that the relative phase between strong and electromagnetic amplitudes is universally -90° in charmonium decays. ψ′ decaying into a pseudoscalar pair provides a possibility to test this c... It has been conjectured that the relative phase between strong and electromagnetic amplitudes is universally -90° in charmonium decays. ψ′ decaying into a pseudoscalar pair provides a possibility to test this conjecture. However, the experimentally observed cross section for such a process is depicted by the two-fold integral, which takes into account the initial state radiative (ISR) correction and energy spread effect. Using the generalized linear regression approach, a complex energy-dependent factor is approximated by a linear function of energy. Taking advantage of this simplification, the integration of ISR correction can be performed and an analytical expression with accuracy at the level of 1% is obtained. Then, the original two-fold integral is simplified into a one-fold integral, which reduces the total computing time by two orders of magnitude. Such a simplified expression for the observed cross section usually plays an indispensable role in the optimization of scan data taking, the determination of systematic uncertainty, and the analysis of data correlation. 展开更多
关键词 计算时间 截面 衰变 聚丙烯 解析表达式 线性回归方法 粲夸克 相对相位
Charmonium Spectrum and Their Transitions in Relativistic Quark Models 预览
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作者 Bhaghyesh K.B. Vijaya Kumar 《理论物理通讯:英文版》 SCIE CAS CSCD 2011年第6期 1044-1048,共5页
用为夸克的现象学的相对论的泛音模型(RHM ) ,我们获得了 S 波浪 charmonium 状态的群众。在调查使用的完整的 Hamiltonian 有 Lorentz 分级的正向量监禁潜力,与限制的那一起 gluon 交换潜力(COGEP ) 。与为扎根的状态和放射状地激动... 用为夸克的现象学的相对论的泛音模型(RHM ) ,我们获得了 S 波浪 charmonium 状态的群众。在调查使用的完整的 Hamiltonian 有 Lorentz 分级的正向量监禁潜力,与限制的那一起 gluon 交换潜力(COGEP ) 。与为扎根的状态和放射状地激动的状态的试验性的群众的一个好协议被获得因为三位字节和汗衫 S 挥动介子。计算费用半径,介子腐烂常数, leptonic 腐烂宽度,二光子腐烂宽度,和放射的 M1 腐烂宽度在对试验性的结果的好同意。 展开更多
关键词 相对论夸克模型 粲夸克 光谱 衰变宽度 谐波模型 电荷半径 衰变常数 现象学
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New exotic charmonium states
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作者 M. Nielsen 《中国物理C:英文版》 SCIE CAS CSCD 2010年第9期1157-1162,共6页
In the last years many states in the charmonium mass region were discovery by BABAR,Belle and CDF collaborations.I discuss some of these discoveries,and how the QCD Sum Rule approach can be used to understand the stru... In the last years many states in the charmonium mass region were discovery by BABAR,Belle and CDF collaborations.I discuss some of these discoveries,and how the QCD Sum Rule approach can be used to understand the structure of these states. 展开更多
关键词 粲夸克 QCD求和 规则方法
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