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arXiv 2409.11342hep-exhep-ph
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利用CERN-SPS H4正电子束流发现真μ子偶素的可行性研究

Feasibility study of True Muonium discovery with CERN-SPS H4 positron beam

Ruben Gargiulo, Elisa Di Meco, Stefano Palmisano

AI总结:

本文研究了利用CERN-SPS H4A束线43.7 GeV正电子轰击薄轻核靶,在共振条件下产生并发现真μ子偶素(ortho-TM)的可行性,表明三个月内可达发现级显著性。

摘要:

真μ子偶素($μ^+μ^-$)是不含强子的最重、最小的电磁束缚态之一,至今从未被观测到。本工作表明,在CERN SPS北区H4A束线上,利用43.7 GeV的次级正电子,可在三个月内以发现级显著性观测到自旋为1的真μ子偶素态(正-真μ子偶素)。通过使正电子轰击多个薄的轻核靶,正-真μ子偶素(其主要衰变道为$e^+e^-$)可在共振条件下通过$e^+e^- \to TM$相互作用产生($\sqrt{s} \sim 2m_μ$)。

英文摘要:

True muonium ($μ^+μ^-$) is one of the heaviest and smallest electromagnetic bound states not containing hadrons, and has never been observed so far. In this work it is shown that the spin-1 TM state (ortho-TM) can be observed at a discovery level of significance in three months at the CERN SPS North-Area H4A beam line, using 43.7 GeV secondary positrons. In this way, by impinging the positrons on multiple thin low-Z targets, ortho-TM, which decays predominantly to $e^+e^-$, can be produced from $e^+e^- \to TM$ interactions on resonance ($\sqrt{s} \sim 2m_μ$).

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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