利用软介质中的硬过程进行介质层析成像的前景
Prospects of medium tomography using hard processes inside a soft medium
摘要：
在微扰量子色动力学（pQCD）中，质子-质子碰撞的硬过程是可以计算的。在重离子碰撞中，这样的过程也会发生，并且由于尺度的分离，可以在产生高p_T部分子的水平上计算。这些粒子随后在强子化之前，在同一碰撞中与源自半硬和软过程的介质相互作用。因此，介质的存在改变了出射部分子和硬强子的动量谱。射流层析成像的想法是研究这种修改，以了解介质的密度分布。虽然这是一个令人信服的想法，但其实际应用遇到了一些困难。在本文中，各种可观的能力，提供层析成像信息的介质进行了讨论和比较。
英文摘要：
Hard processes leading to high transverse momentum hadron production are calculable in perturbative Quantum Chromodynamics (pQCD) for proton-proton collisions. In heavy-ion collisions, such processes occur as well, and due to a separation of scales are calculable on the level of the production of high p_T partons. These subsequently interact with the medium which originates from semi-hard and soft processes in the same collision before they hadronize. The presence of the medium thus modifies the momentum spectrum of outgoing partons and thus hard hadrons. The idea of jet tomography is to study this modification in order to learn about the medium density distribution. While this is a compelling idea, its practical application encounters some difficulties. In this paper, the capability of various observables to provide tomographic information about the medium is discussed and compared.
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。
