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arXiv 1809.02181physics.ins-dethep-ex
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HL-LHC升级ATLAS实验的预期性能

Expected performance of the upgrade ATLAS experiment for HL-LHC

Peilian Liu

摘要:

大型强子对撞机(LHC)已经成功地提供了前所未有的质心能量为13 TeV的质子-质子碰撞数据。计划进行一次升级,以提高大型强子对撞机提供的瞬时光度,即所谓的HL-LHC,旨在每次实验提供总计3000 fb $^{-1}$至4000 fb $^{-1}$的数据。为了应对预期的数据采集条件,ATLAS计划对探测器进行升级。ATLAS协作组制作了六份技术设计报告(TDR)。在这些TDR的物理动机和这种升级的好处一起讨论的升级项目本身的细节。在这篇文章中,我们回顾了升级后的ATLAS探测器的预期性能和物理测量的预期范围,以及预计在HL-LHC数据采集结束时发现新物理的潜力。将显示在预期堆积条件下的对象重建的性能,包括完全重新优化的$b$标记算法。重要的基准物理预测,包括二-希格斯玻色子玻色子生产的敏感性将被讨论。

英文摘要:

The Large Hadron Collider (LHC) has been successfully delivering proton-proton collision data at the unprecedented center of mass energy of 13 TeV. An upgrade is planned to increase the instantaneous luminosity delivered by the LHC in what is called the HL-LHC, aiming to deliver a total of up 3000 fb$^{-1}$ to 4000 fb$^{-1}$ of data per experiment. To cope with the expected data-taking conditions ATLAS is planning upgrades of the detector. Six Technical Design Reports (TDR) were produced by the ATLAS Collaboration. In these TDRs the physics motivation and benefits of such upgrades are discussed together with details on the upgrade project itself. In this contribution we review the expected performance of the upgraded ATLAS detector and the expected reach for physics measurements as well as the discovery potential for new physics that is expected by the end of the HL-LHC data-taking. The performance of object reconstruction under the expected pile-up conditions will be shown, including a fully re-optimized $b$-tagging algorithm. Important benchmark physics projections including di-Higgs boson production sensitivity will be discussed.

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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