论文标题
在$ \ sqrt {s} = 13〜 \ text {tev} $使用ATLAS实验和完整运行2个数据集中搜索$ pp $碰撞中具有大电离能量损失的重，带有大电离的能量损失的重量的颗粒
Search for heavy, long-lived, charged particles with large ionisation energy loss in $pp$ collisions at $\sqrt{s} = 13~\text{TeV}$ using the ATLAS experiment and the full Run 2 dataset
论文作者
论文摘要
本文使用139 fb $^{ - 1} $的质子 - 普罗顿碰撞的集成发光度在LHC处搜索了LHC的Atlas检测器，以搜索假设的大规模，充电，长寿命的颗粒。这些粒子的移动速度将比光速慢得多，应通过其高横向动量和异常大的特定电离损失，$ {\ mathrm {d}} e/\ mathrm {d} x $来识别。仅由内部跟踪系统重建的轨迹和$ {\ mathrm {d}} e/\ mathrm {d} x $测量在像素探测器层中的测量值可提供对具有生命的颗粒的敏感性GEV至3 TEV。出现了与这些粒子长期存在的这些粒子相兼容的$ r $ hadrons，charginos和staus的成对生产的解释，其质量限制远远超出了以前搜索的范围。
This paper presents a search for hypothetical massive, charged, long-lived particles with the ATLAS detector at the LHC using an integrated luminosity of 139 fb$^{-1}$ of proton-proton collisions at $\sqrt{s}=13$ TeV. These particles are expected to move significantly slower than the speed of light and should be identifiable by their high transverse momenta and anomalously large specific ionisation losses, ${\mathrm{d}}E/\mathrm{d}x$. Trajectories reconstructed solely by the inner tracking system and a ${\mathrm{d}}E/\mathrm{d}x$ measurement in the pixel detector layers provide sensitivity to particles with lifetimes down to ${\cal O}(1)$ $\text{ns}$ with a mass, measured using the Bethe--Bloch relation, ranging from 100 GeV to 3 TeV. Interpretations for pair-production of $R$-hadrons, charginos and staus in scenarios of supersymmetry compatible with these particles being long-lived are presented, with mass limits extending considerably beyond those from previous searches in broad ranges of lifetime.
