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psi(3770) 和D物理研究
  • 项目名称：psi(3770) 和D物理研究
  • 项目类别：重大项目
  • 批准号：10491304
  • 申请代码：A050201
  • 项目来源：国家自然科学基金
  • 研究期限：2004-08-31-2008-07-31
  • 项目负责人：荣刚
  • 负责人职称：研究员
  • 依托单位：中国科学院高能物理研究所
  • 批准年度：2004
中文摘要：

高能

中文主题词： D物理
英文摘要：

D

英文主题词： D
结论摘要：

利用工作在北京正负电子对撞机上的北京谱在质心系能量Ecm=3.773 GeV附近采集的数据，研究了ψ(3770)和D 介子的产生和衰变规律。发现了第一个ψ(3770)衰变到非DD-bar的模式，即ψ(3770)→J/ψπ+π-，测量了该过程的分支比；首次测量了ψ(3770)→非DD-bar衰变的分支比；首次直接观测到ψ(3770)→非DD-bar截面增强；无偏精密地测定了ψ(3686)及ψ(3770)的质量、总宽度、轻子宽度和DD-bar对产生截面；在DD-bar对产生阈能附近，无偏精密地测定了反映总强子产生的R值和连续轻强子产生的Ruds；首次验证了在共振区内微扰QCD计算的Ruds的正确性；首次发现强子截面谱反常畸变,这对应发现新结构或新物理现象;解决了长期存在的"在D介子的遍举半轻子衰变中同位旋不守恒"的疑难，并得到了其他一些重要结果。开拓了研究ψ(3770)非-DDbar衰变的新领域。其研究结果向现有的粲偶素物理理论提出了挑战，从而有力地推动了对粲偶素产生和衰变机制的研究，以及对QCD的理论和实验的研究。同时也为实验物理学家指明了在这一能区内寻找新粒子和探索新物理现象的方向。

成果综合统计
成果类型
数量
  • 期刊论文
  • 会议论文
  • 专利
  • 获奖
  • 著作
  • 33
  • 35
  • 0
  • 0
  • 1
期刊论文
Evidence of ψ(3770) non-DD-bar decay to J/ψ(+(-
Measurements of the branching fractions for ψ(3770) (D0D0-bar, D+D-,DD-bar and the resonance paramet
Direct Measurements of the Cross Sections for e+e-( hadrons| non-DD-bar in the range from 3.65 to 3.
Measurements of the continuum Ruds and the Ruds+ψ(3770) values in e+e- annihilation in the energy re
Measurements of the line shapes of DD-bar production and the ratios of the production rates of D+D-
Measurement of cross sections for D0D0-bar and D+D- production in e+e- annihilation at Ecm= 3.773 Ge
Direct measurements of the non-DD-bar cross section sigma^obs_ψ(3770)( non-DD-bar at Ecm= 3.773 GeV
Direct Measurements of the branchn fraction for D+(K0-bar mu v and determination of Gamma(D0(K- mu v
Measurement of the integrated luminosity of psi(3770) precision cross section scan data
Direct measurement of absolute branching fractions for D0 and D+ inclusive semimuonic decays
Measurements of the observed cross-sections for exclusive light hadron production in e+ e- annihilat
Direct measurement of the branching fraction for D+(K0e+v and determination of　Gamma(D0(K-e+v)/Gamma
Experimental sensitivities of searching for rare and forbidden decays of charm mesons at BES-III
Direct measurement of the cross sections for D0 anti-D0, D+ D- and D anti-D production by e+ e- anni
Measurements of the observed cross-sections for e+ e- ( light hadrons at Ecm = 3.773-GeV and 3.650-G
Measurements of the absolute branching fractions for D( K-bar pi e+ v, D ( K*-bar e+ v and determina
Search for D+ (phi l+ v and measurement of the branching fraction for D+(phi pi+
A Monte Carlo generator for full simulation of e+ e- (hadrons cross section scan experiment
Recent BES results on psi(3770) and psi(2s) production and decays
Measurements of the observed cross sections for e+ e- ( exclusive light hadrons containing KS0 at Ec
Measurements of the observed cross sections for e+ e- ( exclusive light hadrons containing (0(0 at E
Measurement of branching fractions for the inclusive Cabibbo-favored anti-K*0(892) and Cabibbo-suppr
Measurements of Cabibbo-suppressed hadronic decay fractions of charmed D0 and D+ mesons
Recent results of D physics on BESII
Measurements of the cross sections for e+e- (hadrons at 3.650, 3.6648, 3.773 GeV and the branching f
Anomalous line shape of the cross section for e+e- ( hadrons in the center-of-mass energy region bet
Precision measurements of the mass, the widths ofψ(3770) resonance and the cross section for e+e-(ψ(
Direct measurements of the branching fractions for D0(K-e+v and D0(pi-e+v and determinations of the
Direct measurement of the pseudoscalar decay constant fD+
Direct measurements of the branching fractions for inclusive K+/- and inclusive semileptonic decays
First Evidence of psi(3770) Hadronic Transition to J / psi pi+ pi-
Measurements of branching fractions for inclusive K0-bar / K0 and K*(892)-/+ decays of neutral and c
Experimental studies of the pi+ pi- pi+ pi- pi0, K +K- pi+ pi- pi0 and p anti-p pi+ pi- pi0 final st
会议论文
Recent results on psi(3770) and psi(2S) production and decays at BES
Recent BES results on psi(3770) and D meson production and decay
Recent BES charmonium results
Recent Results on D meson Decays from BES
Recent results on D meson decays from the BES Collaboration
Recent Results on Charm and Charmonium from BES Experiment
Some resent results on psi(3770) production and decays
Study of Semilptonic D decays at BES, New views in particle physics, August 5-11,2004, Vietnam
Some results on psi(3770) production and decay from BES-II, Some results on psi(3770) production and
Results of psi(3770) and D production and decays from BES-II
BES-II results on psi(3770) production and its non-DD-bar decays
Measurements of some inclusive decay branching fractions of D mesons and non-DD-bar decay branching
New Measurements of psi(3770) Resonance Parameters & DD-bar Cross Sections at BES-II & CLEO-c
Search for psi(3770) non-DD-bar Decays
Psi(3770) and D physics at BES-II
BES-II Psi(3770) 物理实验中BEPC能量的绝对刻度
Direct measurements of the cross sections for D0D0-bar, D+D- and DD-bar production by e+e- annihilat
Some results on psi(3770) production and its D anti-D and non-D anti-D decays from BES-II
Measurements of sigma (e+e-> hadrons) and B(psi(3770)->DD-bar, non-DD-bar
The reults on Psi(3770) from BESII
Recent Results on non-D anti-D decays of psi(3770) from BES
Recent results on psi(3770) physics at BES-II
Charm Decays and Ψ(3770) non-DD Decays at BESII and BESIII
Measurements of Charm and Charmonium Decays at BES
Measurement of B(psi(3770) -> D0D0-bar,D+D-) and B(psi(3770) -> non-DD-bar) and search for psi(3770)
Recent BES results on psi(3770) and D meson production and decay
Meausurement of the integrated luminosity in psi(3770) precision scan
Some results on non-DDbar decays of psi(3770) from BES-II
Search for non-DDbar decays of psi(3770) and measurement of the partial widths, Discoveries in flavo
Recent results on D meson decays from BES
Recent results on psi(3770) and D physics from BES
Measurement of inclusive branching fractions of D decays and psi(3770) non-DD-bar decays
Some results on D meson decays from BES
non-DD-bar decays of psi(3770) from BES-II
Some results on psi(3770) production and decays from BES-II
著作
e+e- 对撞物理 - - - 北京谱仪-II
荣刚的项目
北京谱仪-III DD-bar对产生阈上共振态非-DD-bar衰变的实验研究
期刊论文 27 会议论文 5
D物理研究