Physical Review Letters ( IF 8.385 ) Pub Date : 2021-02-19 , DOI: 10.1103/physrevlett.126.071801
B. Acharyaet al.(MoEDAL Collaboration)

The MoEDAL trapping detector consists of approximately 800 kg of aluminum volumes. It was exposed during run 2 of the LHC program to $6.46\text{\hspace{0.17em}}\text{\hspace{0.17em}}{\mathrm{fb}}^{-1}$ of 13 TeV proton-proton collisions at the LHCb interaction point. Evidence for dyons (particles with electric and magnetic charge) captured in the trapping detector was sought by passing the aluminum volumes comprising the detector through a superconducting quantum interference device (SQUID) magnetometer. The presence of a trapped dyon would be signaled by a persistent current induced in the SQUID magnetometer. On the basis of a Drell-Yan production model, we exclude dyons with a magnetic charge ranging up to five Dirac charges ($5{g}_{D}$) and an electric charge up to 200 times the fundamental electric charge for mass limits in the range 870–3120 GeV and also monopoles with magnetic charge up to and including 5${g}_{D}$ with mass limits in the range 870–2040 GeV.

MoEDAL捕集探测器由大约800千克铝量组成。它在大型强子对撞机程序的运行2中暴露给$6.46\text{\hspace{0.17em}}\text{\hspace{0.17em}}{\mathrm{fb}}^{-1个}$LHCb相互作用点的13 TeV质子-质子碰撞的数量。通过使构成探测器的铝体积通过超导量子干涉仪（SQUID）磁力计，来寻找在捕获探测器中捕获的达因（带电荷和带磁性的粒子）的证据。在SQUID磁力计中感应出的持续电流将表明存在被困的二极体。在Drell-Yan生产模型的基础上，我们排除了磁电荷不超过5个Dirac电荷（$5{G}_{d}$）和最高质量为基本电荷的200倍，以达到870-3120 GeV范围内的质量极限；还有单极，其磁电荷不超过5${G}_{d}$ 质量限制在870-2040 GeV的范围内。

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