论文标题
使用138 fb $^{ - 1} $ 13 tev $ pp $ collisions搜索10至70 GEV质量范围中的增强双孔共振范围
Search for boosted diphoton resonances in the 10 to 70 GeV mass range using 138 fb$^{-1}$ of 13 TeV $pp$ collisions with the ATLAS detector
论文作者
论文摘要
通过在大型强子对撞机（LHC）的ATLAS实验中，搜索质量范围为10至70 GEV的双光子共振。该分析基于$ pp $碰撞数据，对应于138 fb $^{ - 1} $的集成光度，该数据在2015年至2018年记录的13个TEV中的中心能量中。先前在LHC上寻找二型偶像共振的搜索已经探索了降低到65 GEV的群众，没有发现新的粒子的证据，发现了新的颗粒的证据。该搜索利用了在检测器中重建的一对紧密间隔的光子对事件的特殊运动学，从而使不变质量降低至10 GEV。提出的策略涵盖了先前未在强子山子上探索的区域，因为记录低能光子和估计背景的实验挑战。未观察到显着的过量，并且报告的极限在迅速腐烂的轴向样颗粒与胶子和光子之间的质量迅速腐烂的粒子上提供了最强的束缚，以在10到70 GEV之间的质量。
A search for diphoton resonances in the mass range between 10 and 70 GeV with the ATLAS experiment at the Large Hadron Collider (LHC) is presented. The analysis is based on $pp$ collision data corresponding to an integrated luminosity of 138 fb$^{-1}$ at a centre-of-mass energy of 13 TeV recorded from 2015 to 2018. Previous searches for diphoton resonances at the LHC have explored masses down to 65 GeV, finding no evidence of new particles. This search exploits the particular kinematics of events with pairs of closely spaced photons reconstructed in the detector, allowing examination of invariant masses down to 10 GeV. The presented strategy covers a region previously unexplored at hadron colliders because of the experimental challenges of recording low-energy photons and estimating the backgrounds. No significant excess is observed and the reported limits provide the strongest bound on promptly decaying axion-like particles coupling to gluons and photons for masses between 10 and 70 GeV.
