反夸克

自从欧洲μ子中心EuropeanMuonCollaboration（EMC）在实验上观察到核子的自旋仅有一小部分来自夸克和反夸克，核子自旋分布情况的研究便逐渐深入。

The spin distribution of nucleon has been investigated extensively since the fact that only a small fraction of spin is from quark and antiquark was observed in an experiment performed by European Muon Collaboration ( EMC ) .

像反夸克，反质子等等。

Thus , antiquark , antiproton , etc.

对于赝标量介子K和矢量介子K我们可以得出类似的结论，从而预言夸克-反夸克在赝标量道中会形成比矢量道中更稳定的束缚态。

Furthermore , we obtain similar conclusions for other pseudoscalar mesons and vector mesons , the quark-antiquark systems form more stable bound states in the pseudoscalar channels than that in the vector channels .

从夸克-反夸克通过介子场耦合的模型出发研究了（ΩN）LST是否存在束缚态的问题。

The structures of (Ω) LST systems are studied in the SU ( 3 ) quark model , in which the coupling between quark antiquark and the meson fields is included .

本文用MonteCarlo方法对四维对称格点规范理论中具有较好标度性行为的单元格EXP作用量计算了重夸克-反夸克势。

The heavy quark-antiquark force and potential are calculated by means of Monte Carlo method in 4 dimensional symmetry lattice gauge theory for a single plaquette EXP action which has a good scaling behaviour .

是夸克和反夸克。

It 's quark and antiquark .

因此反夸克的味道和颜色波函数可以用两个全反对称的正夸克表示。

So flavor and color wave function of anti-quark can be with two quarks that are all antisymmetric .

不会的，因为反夸克的数量远少于夸克。

No they will not , because the amount of antiquarks are really small , not equal with quarks .

当夸克休息的时候，反夸克就从身体中被释放了出来。

When quarks are resting , antiquarks are set free from our bodies , they can go anywhere they want to .

它们为什么存在呢，而且如果我们的身体里同时有夸克和反夸克存在，它们不会相互抵消吗？艾蕊问。

Why do they exist * and if there are both quarks and antiquarks in our bodies , dont'they counterpart each other ?

的夸克和反夸克在色场涨落扰动下偏离平衡较远。

We obtain the distribution functions for quarks ( and anti-quarks ) and gluons under perturbation of the fluctuation of the color field .

而反夸克不是全同的费米子，不受泡利不相容原理的约束。因此，五夸克的波函数可以将四个正夸克波函数与一个反夸克的波函数作外积约化的耦合得到。

The anti-quark is not all the same fermion . Therefore , the five-quark wave function with four quarks and an anti-quark function be constructed by outer product .

描述粒子相互作用基本理论是标准模型，按照标准模型，强子是由夸克和反夸克通过色相互作用组成。

The fundamental theory on interactions among particles is the standard model . According to the standard model , hadrons are composed by quarks and anti-quarks via the color interaction .

使用从超弦理论激发的伸缩子与胶子耦合的有效理论得出的重夸克反夸克势，研究了重夸克反夸克系统的自旋平均能级。

Using the heavy quark antiquark potential which emerges from an effective dilaton gluon coupling inspired by the superstring theory , we study the energy levels of heavy quark antiquark systems .

在重组合模型中只考虑夸克和反夸克，胶子并不直接参与重组合，认为在强子化前胶子已经转化成夸克和反夸克对。

For the recombination model , we consider only quark and antiquark degrees of freedom , and gluons are assumed to have been converted into quark and antiquark pairs before hadronization .

相反地，它们永远以三个一组（质子和中子）或者以夸克反夸克对（π介子）存在，而且它们正像由橡皮带连接在一起似的。

Instead , they always occur in groups of three ( protons and neutrons ), or in pairings of a quark and an anti-quark ( pi mesons ), and behave as if they were joined by rubber bands .

结果表明，这个模型确实可以解释一些重子激发态的性质，但是还存在一些偏差，今后，需要考虑五夸克的轨道空间激发和夸克-反夸克对产生和湮灭的影响。

We have found that this model can explain some nature of the baryons , but there are some deviations . We need to consider the excited state and the quark-anti-quark pair production and annihilation effects in the future .

J/Ψ粒子是由粲夸克和反粲夸克组成的束缚态的实验证明

How it was shown experimentally that the J / Ψ particle is composed of charm and anti-charm quarks

所以我们必须将四个处于全反对称的正夸克按照内积约化的要求分解得到各个空间的波函数。

Therefore , we shall decompose wave function of four quarks by the inner product in accordance with the requirements of decomposition .