Search for magnetic monopoles with the MoEDAL forward trapping detector in 2.11 fb−1 of 13 TeV proton–proton collisions at the LHC

Acharya, B. S.; Alexandre, Jean; Baines, S.; Beneš, P.; Bergmann, B.; Bernabéu, J.; Bevan, A. J.; Brânzaş, H.; Campbell, M.; Caramete, L.; Cecchini, S.; Montigny, M. de; Roeck, A. De; Ellis, John; Fairbairn, Malcolm; Felea, D.; Frank, Mariana; Frekers, D.; García, C.; Hays, J.; Hirt, Ann M.; Janecek, J.; Kim, D.-W.; Kinoshita, K.; Korzenev, A.; Lacarrère, D.; Lee, S.C.; Leroy, C.; Levi, G.; Lionti, A. E.; Mamuzic, J.; Margiotta, A.; Mauri, N.; Mavromatos, Nikolaos; Mermod, P.; Mitsou, V. A.; Orava, R.; Ostrovskiy, I.; Parker, B.; Patrizii, L.; Păvălaş, G. E.; Pinfold, J. L.; Popa, V.; Pozzato, M.; Pospı́šil, S.; Rajantie, Arttu; Austri, Roberto Ruiz de; Sahnoun, Z.; Sakellariadou, Mairi; Santra, A.; Sarkar, S.; Semenoff, Gordon W.; Shaa, A.; Sirri, G.; Sliwa, K.; Soluk, R.; Spurio, M.; Srivastava, Y. N.; Suk, M.; Swain, J.; Tenti, M.; Togo, V.; Tuszyński, J. A.; Vento, V.; Vives, O.; Vykydal, Z.; Widom, A.; Willems, Guido Alexander; Yoon, Ji Hye; Zgura, I. S.

doi:10.1016/j.physletb.2018.05.069

Cited by 56 publications

(92 citation statements)

References 42 publications

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“…For a given mass and charge, the pair-production model determines the kinematics and the overall trapping acceptance obtained. The uncertainty in the acceptance is dominated by uncertainties in the material description [19][20][21]. This contribution is estimated by perform- ing simulations with hypothetical material conservatively added and removed from the nominal geometry model.…”

mentioning

confidence: 99%

Magnetic Monopole Search with the Full MoEDAL Trapping Detector in 13 TeV pp Collisions Interpreted in Photon-Fusion and Drell-Yan Production

Acharya¹,

Alexandre²,

Baines³

et al. 2019

Phys. Rev. Lett.

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MoEDAL is designed to identify new physics in the form of stable or pseudostable highly ionizing particles produced in high-energy Large Hadron Collider (LHC) collisions. Here we update our previous search for magnetic monopoles in Run 2 using the full trapping detector with almost four times more material and almost twice more integrated luminosity. For the first time at the LHC, the data were interpreted in terms of photon-fusion monopole direct production in addition to the Drell-Yan-like mechanism. The MoEDAL trapping detector, consisting of 794 kg of aluminum samples installed in the forward and lateral regions, was exposed to 4.0 fb −1 of 13 TeV proton-proton collisions at the LHCb interaction point and analyzed by searching for induced persistent currents after passage through a superconducting magnetometer. Magnetic charges equal to or above the Dirac charge are excluded in all samples. Monopole spins 0, 1 /2 and 1 are considered and both velocity-independent and -dependent couplings are assumed. This search provides the best current laboratory constraints for monopoles with magnetic charges ranging from two to five times the Dirac charge.

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mentioning

confidence: 99%

Magnetic Monopole Search with the Full MoEDAL Trapping Detector in 13 TeV pp Collisions Interpreted in Photon-Fusion and Drell-Yan Production

Acharya¹,

Alexandre²,

Baines³

et al. 2019

Phys. Rev. Lett.

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“…Before the Higgsboson discovery it was actively debated as one of the possible sources for its creation (see, e.g., [62,63]). Nowadays, the main topics include searches for supersymmetric particles [62,64,65,66,67,68,69,70,71], magnetic monopoles [72,73,74], gravitons and possible extra spatial dimensions of the Kaluza-Klein theory with large compact dimensions in addition to the 4 dimensions of Minkowski spacetime [63,75], axion-like pseudoscalar particles [76,77,78,79,80,81,82], which would induce anomalous scattering of light-by-light, radions [83], unparticles [84], impact of supersymmetry on properties of the observed particles (e.g., the virtual sparticles in Feynman diagrams for the anomalous magnetic moment of the tau lepton [85]). There are no experimental signatures of these effects yet.…”

Section: Searches For New Physicsmentioning

confidence: 99%

Ultraperipheral nuclear interactions

Dremin

2020

Phys.-Usp.

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Large-distance ultraperipheral collisions of two relativistic ions are considered. The clouds of photons surrounding the ions are responsible for their distant electromagnetic interaction. The perturbative approach and the method of equivalent photons are described. It is shown that the total cross section of these collisions increases rapidly with increasing energy and is especially large for heavy ions. Some experimental data and their comparison with theoretical approaches are described. Further proposals are discussed.

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“…The kinematics for a scalar monopole of mass M is already a well-studied topic ( [15], for example). It is mentioned here for completeness.…”

Section: The Spin 0 Monopolementioning

confidence: 99%

“…In fact, for small enough β, this renders the effective coupling gβ perturbative. In this non-relativistic limit, a limit of relevance to the MoEDAL experiment at CERN [15] amongst others, the coupling becomes weak, and a perturbative theory is established. Hence, Feynman-like graphs as in Figure 1 can be drawn within the context of this EFT only.…”

Section: Introductionmentioning

confidence: 99%

Effective Field Theory Treatment of Monopole Production by Drell–Yan and Photon Fusion for Various Spins

Baines

2019

The 7th International Conference on New Frontiers in Physics

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A resolution over the existence of magnetic charges has eluded the high energy physics community for centuries, and their search has gained momentum as recent models predict these may be observable at current colliders. They appear in field theories in two forms: the widely studied but heavily suppressed monopole with structure (soliton) and the not-so-well-covered point-like monopole. The latter was first proposed by Dirac as the source of a singular magnetic field and in effect symmetrises Maxwell's equations. Following this line of research, work by S. Baines et al. analysed these sources as matter fields that carry spins 0, 1 2 , or 1, in an effective field theory that is perturbative for monopoles produced at threshold where the coupling strength g(β) is suppressed. All three cases are currently under investigation by the MoEDAL collaboration at CERN, and the theoretical expressions for kinematic distributions proposed in this work serve as guides to these searches. The cross section distributions in each case are derived from a U (1) invariant gauge theory. It is not assumed that, like the electron, the monopole's magnetic moment is generated through spin interactions at minimal coupling, as it may be quite large. Instead, the analytical expressions in the spin 1 2 and 1 cases are kept completely general through the inclusion of a phenomenological parameter κ, related to the gyromagnetic ratio g R = 1 + κ. In fact, the inclusion of this parameter gives the effective theory validity in the high energy limit if the magnetic coupling scales with the particle's velocity β = v c .

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Search for magnetic monopoles with the MoEDAL forward trapping detector in 2.11 fb−1 of 13 TeV proton–proton collisions at the LHC

Cited by 56 publications

References 42 publications

Magnetic Monopole Search with the Full MoEDAL Trapping Detector in 13 TeV pp Collisions Interpreted in Photon-Fusion and Drell-Yan Production

Magnetic Monopole Search with the Full MoEDAL Trapping Detector in 13 TeV pp Collisions Interpreted in Photon-Fusion and Drell-Yan Production

Ultraperipheral nuclear interactions

Effective Field Theory Treatment of Monopole Production by Drell–Yan and Photon Fusion for Various Spins

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