论文标题
LHC的$ pbpb $碰撞中的轴突状颗粒的产生-LHC和FCC：一种现象学分析
Production of axionlike particles in $PbPb$ collisions at the LHC, HE -- LHC and FCC: A phenomenological analysis
论文作者
论文摘要
考虑到下一次大型强生对撞机（LHC）和未来的高能-LHC（HE -LHC）和Future Circular Collider（FCC）的能量，研究了超疗法$ PBPB $碰撞（UPHIC）中轴突状颗粒（ALP）的产生。假设ALP质量和耦合以及中央检测器的典型排他性降低，我们估算了与$γγγ\ rightarrow A \ Rightarrow a \ Rightarrow ussprocess产生的横截面和不变质量，速度，横向动量和{acoplanarity}分布。对背景进行了详细的分析。我们证明，可以通过排他性削减来大大降低背景，并且作为LHCB的前向检测器是探测质量较小的ALP的理想选择。最后，我们的结果表明，对diphoton最终状态的未来实验分析可以探测轴突状颗粒的存在和特性。
The production of axionlike particles (ALP) in ultraperipheral $PbPb$ collisions (UPHIC) is investigated considering the energies of the next run of the Large Hadron Collider (LHC) and of the future High Energy -- LHC (HE -- LHC) and Future Circular Collider (FCC). Assuming four different combinations for the ALP mass and coupling and the typical exclusivity cuts for central and forward detectors, we estimate the cross section and invariant mass, rapidity, transverse momentum and {acoplanarity} distributions associated to the diphoton final state produced in the $γγ\rightarrow a \rightarrow γγ$ subprocesses. A detailed analysis of the backgrounds is performed. We demonstrate that the backgrounds can be strongly reduced by the exclusivity cuts and that a forward detector, as the LHCb, is ideal to probe an ALP with small mass. Finally, our results indicate that a future experimental analysis of the diphoton final state in UPHIC can probe the existence and properties of axionlike particles.
