| 1. | We also study the transverse momentum distribution of dy pairs for n - p collision at the energies of rhic and lhc
并且在同样能量下，给出了dy轻子对的横动量分布。 |
| 2. | The value of w2 as a function of transverse momentum pt and collision centrality is presented for both particles up to ~ 3 . 0 gev / c
我们称碰撞参数b 0的碰撞为对心碰撞。这类碰撞具有初始的方位角对称性。 |
| 3. | The results on the p / p ratio show that this ratio does not change remarkably with centrality . transverse momentum and rapidity , and is independent of the reaction plane within t
反质子质子产额比不明显依赖于碰撞对心度、横动量、快度和事件平面。 |
| 4. | Measurements of azimuthal anisotropies in the transverse momentum distribution of particles can probe the very early stages of ultra - relativistic heavy - ion collisions
这其中，最重要的就是相对论流体力学。其基本假设是系统达到了局域的热平衡和化学平衡。 |
| 5. | By analyzing the transverse momentum or transverse energetic spectra of those particles from mid - rapidity in heavy - ion collisions , we can gain the information on transverse collective expansion in the center area of the collisions
通过研究中心快度区不同粒子的横质量谱或者横能谱，能够获得碰撞中心区域横向集体扩张的信息。 |
| 6. | By widening the width of gaussian transverse momentum distribution in string fragmentation . luciae reproduced the o mesons rapidity distribution , transverse mass distribution , and also the enhancement factor of o meson in pb - pb relative to p - p collisions
介子； ‘ ’ ‘土影响不人， lu 1模拟的结果同时大明：通过加宽弦碎裂为叨对的内禀描动量分布的宽度， 。 |
| 7. | 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。 |
| 8. | Using rqmd to generate 80 , 000 monte carlo mini - bias events of 197au + 197 au collisions at snn = 200gev , we study the transverse momentum distribution , particle ratios and the freeze - out time and transverse radius distributions of final state hadronic system , comparing them with the reported experimental results
通过研究末态强子的横动量分布以及粒子比，特别是对带电、 k 、 p和( ? )的平均横动量的研究及与实验比较，我们试图研究在高能核碰撞中早期部分子集体行为。 |
| 9. | 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。 |
| 10. | Particle ratios embody the chemical equilibrium driven by inelastic interaction during rapid expansion when the temperature decreases in the colliding system , the measured hadron ratios provide the chemical composition of the fireball at the chemical freeze - out point and access the baryon transporter stopping ) for the initial conditions at early stage of the collisions . in this paper , we study the anti - proton to proton ratio from ig7au + 197 au collisions , analyzing p / p ratio as functions of rapidity , transverse momentum and centrality at ^ / saw = 200gev and the dependence on the center of mass energy of p / p ratio , compared with the experimental results . it shows that the p / p ratio has n ' t obvious dependence on rapidity for mid - rapidity , but shows a slight increase trend with pt increasing in the range of pt < 1gev / c for mini - bias or central collisions , and rqmd shows a more remarkable correlation between p / p ratio and centrality than experiments do at snn = 200gev
研究表明：对厂在中心快度区没有明显的快度依赖性，在越靠近边缘快度区， p p呈下降趋势；在对心碰撞或者最小无偏事件中， p p在低横动量区域随着横动量的升高而增大； p随着碰撞对心度的比实验结果表现出稍强的随对心度增大而减小的趋势，尤其是有再散射ujrqmd模型；在中心快度区， p p随着碰撞的质心能量的提高而快速的增大，与实验结果一致；在低能，有末态粒子再散射的d较好的预言了的：但是在mc能量下，有末态粒子在散射的d所预言的p p值比实验值要小。 |
