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Phys Rev Lett. 2019 Jul 12;123(2):021802. doi: 10.1103/PhysRevLett.123.021802.

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

Author information

1
Theoretical Particle Physics and Cosmology Group, Physics Department, King's College London, United Kingdom.
2
IEAP, Czech Technical University in Prague, Czech Republic.
3
IFIC, Universitat de València-CSIC, Valencia, Spain.
4
School of Physics and Astronomy, Queen Mary University of London, United Kingdom.
5
Institute of Space Science, Bucharest-Măgurele, Romania.
6
Experimental Physics Department, CERN, Geneva, Switzerland.
7
INFN, Section of Bologna, Bologna, Italy.
8
Physics Department, Konkuk University, Seoul, Korea.
9
Physics Department, University of Alberta, Edmonton, Alberta, Canada.
10
Theoretical Physics Department, CERN, Geneva, Switzerland.
11
Department of Physics, Concordia University, Montréal, Québec, Canada.
12
Department of Earth Sciences, Swiss Federal Institute of Technology, Zurich, Switzerland-Associate member.
13
Physics Department, Gangneung-Wonju National University, Gangneung, Republic of Korea.
14
Département de Physique Nucléaire et Corpusculaire, Université de Genève, Geneva, Switzerland.
15
Département de Physique, Université de Montréal, Québec, Canada.
16
INFN, Section of Bologna and Department of Physics and Astronomy, University of Bologna, Italy.
17
Physics Department, University of Helsinki, Helsinki, Finland.
18
Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama, USA.
19
Institute for Research in Schools, Canterbury, United Kingdom.
20
Department of Physics, Imperial College London, United Kingdom.
21
Department of Physics, University of British Columbia, Vancouver, British Columbia, Canada.
22
Department of Physics and Astronomy, Tufts University, Medford, Massachusetts, USA.
23
INFN, CNAF, Bologna, Italy.

Abstract

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, ½, 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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