论文标题
搜索带有正向质子标签的QCD instantons
Searches for QCD instantons with forward proton tagging
论文作者
论文摘要
我们研究了在LHC中观察到重度（$ M _ {\ rm Inst}> 60 $ GEV）的QCD Instantons，其中包括一个或两个标记的领先质子，包括快速模拟检测器和堆积效应。我们表明，单标签构型中的预期instanton信号受中央检测器和堆积效应的强烈影响。对于双标签的方法，需要考虑更大的集成光度和更大的堆积污染，组合背景压倒了预期的信号。我们建议有关中央和前进速度轨道的其他时间信息对于潜在的改进至关重要。
We study the possibility to observe heavy ($M_{\rm inst}> 60$ GeV) QCD instantons at the LHC in events with one or two tagged leading protons including fast simulation of detector and pile-up effects. We show that the expected instanton signal in a single-tagged configuration is strongly affected by central detector and pile-up effects. For double-tagged approach, where larger integrated luminosities and hence larger pile-up contaminations need to be considered, the combinatorial background overwhelms the expected signal. We suggest that additional time information about tracks at central and forward rapidities would be crucial for potential improvements.
