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首页> 外文期刊>Physics Letters, B. Nuclear Physics and High Energy Physics >Production of axionlike particles in Pb Pb collisions at the LHC, HE-LHC and FCC: A phenomenological analysis
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Production of axionlike particles in Pb Pb collisions at the LHC, HE-LHC and FCC: A phenomenological analysis

机译：在LHC，HE-LHC和FCC下生产PB PB碰撞中的轴状颗粒：一种现象学分析

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The production of axionlike particles (ALP) in ultraperipheral Pb Pb 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 gamma gamma -> a -> gamma gamma 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. (C) 2020 The Author(s). Published by Elsevier B.V.
机译：考虑到大型HADRON撞机（LHC）和未来高能量-LHC（HE-LHC）和未来圆形撞机的下一步运行的能量，研究了超周边PB PB碰撞（UPHIC）中的轴状颗粒（ALP）的产生（FCC）。假设中央和前向探测器的典型排他性切割具有四种不同的组合，估计与在γγ->中产生的Diphoton最终状态相关的横截面和不变的质量，快速度，横向动量和跨血管性分布。 A - > Gamma Gamma Sub.Comentes。执行对背景的详细分析。我们证明了背景可以通过排他性切割强烈减少，并且前向检测器作为LHCB，是探测小质量小的ALP。最后，我们的结果表明，未来对UPHIC的Diphoton最终状态的未来实验分析可以探讨轴状颗粒的存在性和性质。 （c）2020提交人。由elsevier b.v出版。

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