drell 中文意思是什麼
drell
解釋
德雷爾-
By deep inelastic scattering of leptons on nucleus and nuclear drell - yan processes one can learn the parton densities in nucleus
通過輕子與原子核的深度非彈性散射、核drell - yan過程，可以了解原子核中的夸克?部分子分佈的信息。 -
It is found that unlike drell - yan model, color dipole approach to drell - yan process needs no k factor and it describes nuclear shadowing effect well in p - a drell - yan process
另外，這一模型也能很好的描述p - a碰撞的drell - yan過程中的遮蔽效應。 -
Al. first applies the color - dipole approach to drell - yan process, which says that in the target rest frame the drell - yan process can be viewed as bremsstrahlung. rather than parton annihilation. according to factorization theorem, the drell - yan cross section can be expressed in terms of the same dipole cross section that appears in deep inelastic scattering
雖然高能反應的微分截面是洛侖茲不變的，但其部分子解釋卻是與坐標系有關的，最近， b . z . kopeliovich等提出靶靜止系中drell - yan過程的色偶極模型，他們認為，在靶靜止系高能碰撞的drell - yan過程是一韌致輻射過程而不是正反夸克對的湮滅。 -
In p - a drell - yan process, the incident quark will experience multiple collisions with different nucleons in the nucleus, which leads to the suppressed drell - yan cross section, in another words, the nuclear shadowing effect
在靶靜止系，對于p - a碰撞的drell - yan過程，入射夸克要與原子核中的不同核子發生多次碰撞，使得總的微分截面被壓低，這就是遮蔽效應。 -
In this paper, the color dipole approach in the target rest frame is presented and the ratio of the drell - yan cross section per nucleon for an 800 gev proton beam incident on a variety of nuclear targets are calculated and the results are compared with fermilab e772 and e866 experimental data. it is shown that without considering the energy loss effect, the calculated results can fit rather well with experimental data
本文介紹了靶靜止系中色偶極模型，用色偶極模型計算了800gev質子與原子核碰撞的drell - yan過程的微分截面比，並與e772和e866實驗結果進行了比較。發現：不考慮能量損失，只計及p - a碰撞中的遮蔽效應，理論結果就與實驗符合的很好。 -
Gribov combined the nonrelativistic glauber multiple collisions theory with quantum field theory and fe ynman diagram technique so that relativistic kinematics could be included. based on glauber - gribov theory, b. z. kopeliovich et. al. developed green function method to calculate the shadowing effect in p - a drell - yan process
Gribov將描述高能非相對論的多次碰撞的glauber理論與量子場論和費曼圖聯系了起來，從而glauber - gribov理論可以描述相對論情況下的多次散射，基於這一理論， b . z . kopeliovich等提出用格林函數方法計算p - a碰撞的drell - yan過程中的遮蔽效應。 -
We study drell - yan ( dy ) dilepton production in - proton collisions within the light - cone ( lc ) color dipole picture, which is described in the target rest frame
在靶靜止系中，用色偶極模型研究了- p碰撞的drell - yan （ dy ）過程。 -
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
通過極化的輕子與原子核的深度非彈性散射、極化的核drell - yan過程，可以更深入地了解原子核中的極化夸克?部分子分佈的信息。 -
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
在高能強子反應中，末態強子的大橫動量分佈具有明顯的核相關性，這種效應也應出現在高能核drell - yan過程的大質量輕子對產生過程中。
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