MoEDAL search in the CMS beam pipe for magnetic monopoles produced via the Schwinger effect
We report on a search for magnetic monopoles (MMs) produced in ultraperipheral Pb--Pb collisions during Run-1 of the LHC. The beam pipe surrounding the interaction region of the CMS experiment was exposed to 184.07 \textmu b\(^{-1}\) of Pb--Pb collisions at 2.76 TeV center-of-mass energy per collisi...
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Veröffentlicht in: | arXiv.org 2024-07 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | We report on a search for magnetic monopoles (MMs) produced in ultraperipheral Pb--Pb collisions during Run-1 of the LHC. The beam pipe surrounding the interaction region of the CMS experiment was exposed to 184.07 \textmu b\(^{-1}\) of Pb--Pb collisions at 2.76 TeV center-of-mass energy per collision in December 2011, before being removed in 2013. It was scanned by the MoEDAL experiment using a SQUID magnetometer to search for trapped MMs. No MM signal was observed. The two distinctive features of this search are the use of a trapping volume very close to the collision point and ultra-high magnetic fields generated during the heavy-ion run that could produce MMs via the Schwinger effect. These two advantages allowed setting the first reliable, world-leading mass limits on MMs with high magnetic charge. In particular, the established limits are the strongest available in the range between 2 and 45 Dirac units, excluding MMs with masses of up to 80 GeV at 95\% confidence level. |
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ISSN: | 2331-8422 |
DOI: | 10.48550/arxiv.2402.15682 |