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arXiv 1708.09759hep-ph
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Pythia 8中的光子-光子和光子-强子过程

Photon-photon and photon-hadron processes in Pythia 8

Ilkka Helenius

摘要:

我们提出了一个新的实现的光生过程中的e+e-和ep碰撞到Pythia 8蒙特卡罗事件发生器。特别是,我们讨论了如何产生的部分子簇射和多部分子相互作用与一个解决的光子束和什么是在不同的运动学区域的直接过程的相对贡献。作为一个应用程序,我们显示的带电粒子生产的数据在电子+电子和电子对撞机在LEP和HERA的比较。我们还考虑光生的dijets比较EP碰撞的数据在HERA和讨论的可能性,以进一步限制核PDF与超外围重离子碰撞在大型强子对撞机。

英文摘要:

We present a new implementation of photoproduction processes in e+e- and ep collisions into Pythia 8 Monte-Carlo event-generator. In particular we discuss how the parton showers and multiparton interactions are generated with a resolved photon beam and what is the relative contribution from direct processes in different kinematical regions. As an application we show comparisons to data for charged-particle production in e+e- and ep collisions at LEP and HERA. We consider also photoproduction of dijets comparing to data for ep collisions at HERA and discuss about possibility to further constrain nuclear PDFs with ultra-peripheral heavy-ion collisions at the LHC.

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