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arXiv 1801.07482nucl-th
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LHC能pp碰撞中部分子相互作用的输运动力学

Transport Dynamics of Parton Interactions in pp Collisions at LHC Energies

Dinesh K. Srivastava, Rupa Chatterjee, Steffen A. Bass

摘要:

我们用玻尔兹曼输运方法,部分子级联模型研究了在大型强子对撞机上质子-质子碰撞中部分子的输运动力学。计算包括半硬pQCD相互作用的部分子填充的核子,并提供了一个时空描述的碰撞级联部分子进行散射和碎裂。随着碰撞质心能量的增加,部分子产生和碰撞次数迅速增加。对于一个给定的质心能量,部分子相互作用的数量被认为是上升强于线性下降碰撞参量之前饱和非常中心的碰撞。奇异增强因子$γ_s$的半硬过程被发现迅速上升,饱和的最高碰撞能量。总的来说,我们的研究表明质子-质子碰撞中存在大量的部分子相互作用,这支持了实验中观察到的高多重质子-质子碰撞的流体行为。

英文摘要:

We investigate the transport dynamics of partons in proton-proton collisions at the Large Hadron Collider using a Boltzmann transport approach, the parton cascade model. The calculations include semi-hard pQCD interaction of partons populating the nucleons and provide a space-time description of the collision in terms of cascading partons undergoing scatterings and fragmentations. Parton production and number of collisions rise rapidly with increase in center of mass energy of the collision. For a given center of mass energy, the number of parton interactions is seen to rise stronger than linear with decreasing impact parameter before saturating for very central collisions. The strangeness enhance factor $γ_s$ for the semi-hard processes is found to rise rapidly and saturate towards the highest collision energies. Overall, our study indicates a significant amount of partonic interactions in proton-proton collisions, which supports the observation of fluid-like behavior for high multiplicity proton-proton collisions observed in the experiments.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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