粒子衰变

β~+延发粒子衰变的一种在束测量方法

A method of in-beam measurement of β ~ + delay particle decay

不稳定粒子寿命和物理时钟受各自的运动状态影响，也可以分别由粒子衰变和物理时钟依赖的具体物理过程受其相对于局部优势引力场的运动状态的影响来解释。

The impact of velocity on the lifetime of unstable particles and physical clocks can be understood from the influence of their motion relative to the local dominant gravity field on the physical processes underlying particle decay and timekeeping of clocks .

北京谱仪-Ⅱks~0、∧粒子衰变顶点位置的确定

The Determination of the Position of the Decay Vertex of K_S ~ 0 and Λ in BES - ⅱ

本文还讨论了非稳态粒子衰变在关联粒子测量中的表现，并给出了对于~（58）Ni靶得到的各种粒子组合的关联函数。

In this paper the decay of the unstable particles is studied the correlation functions of various particle combination on ~ ( 58 ) Ni target are given .

LEP运行的第一年，OPAL，ALEPH，L3和DELPHI四个实验已收集和分析了不少于五十万个Z°粒子衰变。

More than half a million Z ° decays have been collected and analyzed by The four LEP experiments , OPAL , ALEPH , L3 and DELPHI , during the first year operation .

质子滴线附近奇异核粒子衰变研究

Particle Decay Study of Exotic Nuclei near Proton Drip Line

∧和∑粒子衰变的上下不对称性

Up-down asymmetries of λ and σ decays

本文以η→ππγ与η→3π的分支比为示例，讨论了通过对质量作解析延拓，用色散关系处理不稳定粒子衰变的方法，尤其是存在有反常阈的情形。

In this paper , the branch ratio of η→ππγ and η→ 3 π is studied through the analytic continuation of a dispersive relation with respect to the mass of η .

由于在奇异核延迟粒子衰变中通常产生特征低能α粒子和质子，因此探测并鉴别这些粒子已成为研究新的核衰变机制和发现新核素的必要手段。

Because of low energy α particle and protons are usually produced in unusual nuclei delay decay , so detection of these particles become necessary for research of new nuclear decay mechanism and discovery of new nuclei .

Jψ和ψ′粒子辐射衰变到介子的过程是寻找胶球，混杂态，抽取ggqq耦合的极佳场所。

J / ψ and ψ′ radiative decays to mesons are a good place to look for glueballs , hybrids and for extracting gg-q couplings .

场流关系和新粒子的衰变宽度

Field-current relations and some decay widths of the new particles

粒子发生衰变，本身蜕变为其它较轻的粒子，这是正常的事。

The " normal " thing is for a particle to undergo decay and transmute itself into other lighter particles .

如果该粒子继续衰变为电子和基态的暗物质，该电子将释放伽马射线。

If the particle were then to decay into an electron and a ground-state dark matter particle , the electron would release gamma rays .

关于ηc′粒子及其电磁衰变

On the η _c ′ Particle and Its Electromagnetic Decays

B2羣与奇异粒子轻子型衰变

The group b_2 and leptonic decays of strange particles

本文用SU3和G2羣讨论了奇异粒子非轻子衰变的弱作用的变换性质。

In this paper we have discussed the SU3 and G2 transformation properties of the weak interactions .

奇异粒子非轻子衰变的选择定则

Selection rules in nonleptonic decays of strange particles

ω粒子的辐射衰变

The radiative decay of an ω particle

该矩阵的阵迹在质量公式零级项和粒子产生及衰变相互作用中都不出现。

The trace of this matrix appears neither in the zeroth order term of the mass relation nor in the production and decay interactions of particles .

本文用共有夸克模型讨论了核内弱相互作用过程中的夸克效应，计算出了不同超核中∧粒子非介子衰变的宽度，并与其它模型的计算结果及实验值进行了比较。

By joint possessing quarks model , we studied the effect of quarks in nuclear weak interactions , calculated the width of A non-mesonic decay in different hypernuclei , and compared the results with the measurements and other existing calculations .

SU3~（1）×Su3~（2）结构模型下一种可能的介子质量谱和新粒子的产生与衰变

A possible meson spectrum and the production and decay of the new particles in the su_3 ~ ( 1 )× su_3 ~ ( 2 ) model

人们也许会怀疑，这些粒子究竟能否在衰变之前到达探测装置。

One might wonder if these particles could reach the detection apparatus before decaying .

然而其他类型的不含希格斯粒子的亚原子衰变过程也能够精确地产生相同的最终观测结果，就跟缺失的希格斯粒子预定产生的一般。

But other sorts of subatomic process that do not involve the Higgs can produce precisely the same final readings as those the missing boson is predicted to generate .

利用能级跃迁理论分析了三能级系统的光敏剂分子，建立了各能级的粒子数随时间衰变的关系；

Making use of energy level transition theories we analyze the three level energy system of a photosensitive molecule to build up decay traces of every energy level particle population .

研究含有粲夸克的粲粒子的产生和衰变性质对检验标准模型，特别是微扰和非微扰量子色动力学具有十分重要的意义。

Studying the production and decay natures of charm-particle , which contains charm quark , this is of great significance for testing the standard model , especially the perturbative and non-perturbative quantum chromodynamics ( QCD ) .

在粒子关联测量中，利用探测到的非稳态粒子的衰变产物，对探测器组进行能量刻度的修正，可以使探测器组的能量刻度达到一个较高的相对精度。

The accuracy of energy calibration can be improved through the analysis of detected products coming from decay of unstable particles in the measurement of particle correlations .

本文报道了在46.7MeV/u~（12）C诱发的核反应实验中，利用测量轻带电粒子关联函数，来研究非稳定核及低激发核的粒子衰变方式的实验结果。

The experiment results of unstable nuclides decay by using the light charged particle correlation function obtained in ~ ( 12 ) C ( 46.7MeV / u ) + ~ ( 58 ) Ni experiment are reported .