" for the neutrino beam method and the demonstration of the doublet structure of the leptons through the discovery of the muon neutrino 产生第一个实验室创造的中微子束，并发现中微子，从而证明了轻子的对偶结构
It was pointed out that in the target rest frame , dy dilepton production looks like bremsstrahlung , rather than parton annihilation 在靶静止系，轻子对产生的drell - yan过程应看作是韧致辐射，而不是部分子湮灭。
By deep inelastic scattering of leptons on nucleus and nuclear drell - yan processes one can learn the parton densities in nucleus 通过轻子与原子核的深度非弹性散射、核drell - yan过程，可以了解原子核中的夸克?部分子分布的信息。
There are many ways to diagnose signal for quark - gluon plasma , such as direct photon , dilepton enhancement , strangeness enhancement , j / suppression and so on 诊断qgp信号的途径有多种：直接光子产生、双轻子产额增强、奇异性增强、 j压低等。
A quark ( or an antiquark ) from the projectile hadron radiates a virtual photon on impact on the target , the photon subsequently decays into a lepton pair 入射强子中的一个夸克(或反夸克)在靶的作用下辐射出一个虚光子，虚光子再衰变成正反轻子对。
In this model , according to the different coupling modes , people had developed several models , i . e . , model i , ii , iii , iv 在这个模型中，人们根据_ 1与_ 2与夸克和轻子的不同耦合方式又分成了多种形式的理论模型，即现在所谓的模型, , , 。
And by deep inelastic scattering of polarized leptons on nucleus and polarized nuclear drell - yan process one can understand polarized parton densities in nucleus more deeply 通过极化的轻子与原子核的深度非弹性散射、极化的核drell - yan过程，可以更深入地了解原子核中的极化夸克?部分子分布的信息。
Whereas , as a crucial input in the color dipole approach , the color dipole cross section is largely unknown in theory , it is necessary for us to compare different hadron - hadron dilepton production processes to test the appalicablity of this approach 然而，由于色偶极模型中色偶极截面不能从理论上严格确定，我们必须对不同强子?强子碰撞轻子对产生过程进行比较，才能检验色偶极模型描述drell - yan过程的适用性。
A nuclear dependence of the qt distributions , should also occur for high - mass pairs produced in nuclear drell - yan process . in 1987 , the na10 collaboration in cern present the first clear evidence for a nuclear dependence of the transverse momentum distribution of massive muon pairs produced in hadronic interactions 在高能强子反应中，末态强子的大横动量分布具有明显的核相关性，这种效应也应出现在高能核drell - yan过程的大质量轻子对产生过程中。
These experimental results show that < q12 > is independent of the dimuon mass and logitudinal momentum , and imply the scattering of the incident quark within the target nucleus . by means of the glauber model , the difference of the mean transverse momentum squared < qt2 > is studied for the dependence of the incident proton energy and nucleus . the theoretical results are in good agreement with the fnal e772 experimental data 本文利用多重散射的glauber模型，讨论了入射夸克在原子核中传播的多重散射效应，给出了两个不同的核drell - yan过程产生的末态轻子对横动量平方平均值的差值对入射粒子能量核靶核的依赖性关系，计算结果与e772组的实验数据符合甚好。
