衰变

雅各布森得出的结论是基于对钐-147衰变成钕-143所作的分析。

Jacobsen based his conclusion on an analysis of the decay of samarium-147 into neodymium-143 .

在反μ子衰变中，总轻轻子数和总重轻子数也是守恒的。

The antimuon decay also conserves the total light and heavy lepton numbers .

放射性元素的衰变是真正一级反应最简单的实例。

The decomposition of a radioactive element is the simplest example of a true first order reaction .

由于科学家们知道这种元素衰变需要多长时间，因此他们可以根据鲸鲨骨骼中碳-14的含量计算出鲸鲨的年龄。

As scientists know how long the element takes to decay , they can work out the whale shark 's age , depending on how much Carbon-14 is contained in their bones .

B2羣与奇异粒子轻子型衰变

The group b_2 and leptonic decays of strange particles

拟合n组分放射性衰变曲线的非迭代方法

A non - iterative method for fitting n-component decay curves

本论文是在R宇称破缺超对称模型中，我们系统研究了B介子弱衰变。

In this thesis , we study the weak decays of B mesons in the RPV SUSY .

芹菜衰变过程中超氧化物歧化酶（SOD）和脂质过氧化研究

Study on Superoxide Dismutase and Lipid Peroxidation during Celery Leaf Senescence

~（137）Eu衰变的在线测量

On-line Measurement of ~ ( 137 ) Eu Decay

奇异介子的G3宇称和共振态强衰变中的选择定则

The g_5 parity of strange mesons and the selection rule in strong decay of resonance state

微扰QCD方法计算B介子纯湮灭图衰变

Calculation Pure Annihilation Type Decay of B Meson in Perturbative QCD

按照放射性衰变的规则，导出了n组分放射性衰变函数的差分方程。

According to the rules of radioactive decay , a difference equation of n component radioactive decay function is derived .

正因为B介子的产生拥有大量的数据而且B介子衰变过程富含丰富的动力学机制，从而使其成为研究的热点。

The large quantity of the B meson and the abundance of the dynamical mechanism make it become a highlight in the research .

~（238）Pu衰变的α粒子辐射几率

Alpha-particle emission probabilities in the decay of ￣( 238 ) Pu

~（156）Eu衰变发射的γ射线绝对强度测量

Measurements of the Absolute Intensities for the γ - rays From ~ ( 156 ) Eu Decay

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

J／ψ衰变中f0（975）的实验研究

Experimental Study of f_0 ( 975 ) in the J / ψ Decays BES Collaboration

Ψ'衰变中VP和PP模式的事例产生器

Event Generator for ψ' Decays of VP and PP Modes

~（233）U和武器级钚的爆炸产物放射性衰变过程的比较

Comparison on Decay Process of Explosive Products for ~ ( 233 ) U and Weapon-grade Plutonium

高空间冗余图像DCT压缩产生的几何衰变

Geometric degradation produced during DCT compression of images with high spatial redundancy

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 .

直接从β谱提取~（100）Sr的β衰变的强度函数

Beta strength function of ~ ( 100 ) sr-decay extracted from beta spectrum

假如V旋守恒，对奇异介子共振态强衰变中的某些选择定则给予了讨论。

Suppose V-spin conservation , some selection rules in strong decay of resonance state of strange mesons are discussed .

~（192）Ir高活性源衰变对HCT－8细胞和小鼠肿瘤LA（795）生物效应的影响

The Biological Revolution Biological Technology INFLUENCE OF THE ￣( 192 ) Ir SOURCE DECAY ON BIOLOGICAL EFFECT

~（252）Cf放射性衰变半衰期的测量

Determination of disintegration half - life of ~ ( 252 ) Cf

超子的稀有衰变及CP不守恒

Rare Decay of Hyperons and Its CP Violation

TC理论中矢量介子衰变研究

Investigation of techni - vector mesons decays

异种移植转基因用含杂合增强子UI的人衰变加速因子重组基因的构建

Construction of recombinant human decay accelerating factor gene using UI enhancer for high-performance expression in xenotransplantation

基于Hopfield网络的衰变目标识别研究

Recognition Research of Decayed Target Based on Hopfield Neural Network

在论文的综述部分（前三章），我们首先对粒子物理的标准模型以及B介子弱衰变的理论框架进行了简单的介绍，并给出了标准模型下威尔逊系数的表达式；

In the first three chapters , we made a review for the theoretical framework of Standard Model and B physics . We presented the extraction of Wilson coefficients ;