MoEDAL – a new light on the high-energy frontier

Fairbairn, Malcolm; Pinfold, J. L.

doi:10.1080/00107514.2016.1222649

Cited by 7 publications

(6 citation statements)

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“…Although it has recently been argued that magnetic monopoles may exist, not as elementary particles, but as emergent particles (quasiparticles) in exotic condensed matter magnetic systems such as "spin ice" [66][67][68], there is still no direct experimental evidence of Dirac monopoles. However, experimental searches for monopoles continue to be of great interest [69][70][71][72][73]76]. It can be argued that the idea of undetected magnetic monopoles is too high a price to pay for explaining the observed charge quantisation.…”

Section: Final Remarks On the Dirac Quantisation Conditionmentioning

confidence: 99%

Dirac quantisation condition: a comprehensive review

Heras

2018

Contemporary Physics

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In most introductory courses on electrodynamics, one is taught the electric charge is quantised but no theoretical explanation related to this law of nature is offered. Such an explanation is postponed to graduate courses on electrodynamics, quantum mechanics and quantum field theory, where the famous Dirac quantisation condition is introduced, which states that a single magnetic monopole in the Universe would explain the electric charge quantisation. Even when this condition assumes the existence of a not-yet-detected magnetic monopole, it provides the most accepted explanation for the observed quantisation of the electric charge. However, the usual derivation of the Dirac quantisation condition involves the subtle concept of an "unobservable" semi-infinite magnetised line, the so-called "Dirac string," which may be difficult to grasp in a first view of the subject. The purpose of this review is to survey the concepts underlying the Dirac quantisation condition, in a way that may be accessible to advanced undergraduate and graduate students. Some of the discussed concepts are gauge invariance, singular potentials, single-valuedness of the wave function, undetectability of the Dirac string and quantisation of the electromagnetic angular momentum. Five quantum-mechanical and three semi-classical derivations of the Dirac quantisation condition are reviewed. In addition, a simple derivation of this condition involving heuristic and formal arguments is presented.

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Section: Final Remarks On the Dirac Quantisation Conditionmentioning

confidence: 99%

Dirac quantisation condition: a comprehensive review

Heras

2018

Contemporary Physics

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“…In this work, we wish to explore the possibility that a heavy neutrino with a large electric dipole moment would be detectable by MoEDAL's (Monopole and Exotics Detector at the LHC) MAPP (MoEDAL Apparatus for Penetrating Particles) subdetector. MoEDAL is the seventh and newest experiment at the Large Hadron Collider (LHC) [1,2,3]. MAPP will be installed adjacent to the MoEDAL detectors in order to take data during Run-3 of the LHC.…”

Section: Introductionmentioning

confidence: 99%

Searching for heavy neutrinos with the MoEDAL-MAPP detector at the LHC

et al. 2020

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We present a strategy for searching for heavy neutrinos at the Large Hadron Collider using the MoEDAL Experiment's MAPP detector. We hypothesize the heavy neutrino to be a member of a fourth generation lepton doublet, with the electric dipole moment (EDM) introduced within a dimension-five operator. In this model the heavy neutrino is produced in association with a heavy lepton. According to our current experimental and theoretical understanding, the electric dipole moment of this heavy neutrino may be as high as 10 −15 e cm. We briefly examine the possibility of detecting such a heavy neutrino in the MAPP as an apparently fractionally charged particle, via ionization due to the neutrino's EDM.

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“…In vacuum the charge density ρ e and current density j e both vanish. The equations (1) have then an O (2) duality symmetry…”

Section: Introductionmentioning

confidence: 99%

“…Although no monopole has yet been found, the allure of duality symmetry between electric and magnetic fields and resulting monopoles [1] has resulted in the search for monopoles by the MoEDAL experiment [2] at CERN. This experiment, more generally, is devoted to the detection of highly ionising long-lived massive particles predicted by theories which go beyond the SM.…”

Section: Introductionmentioning

confidence: 99%