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

B S Acharya ,P Mermod,B Bergmann,C Leroy,M Tenti,I Ostrovskiy,S Baines,A Korzenev,A Shaa,J Janecek,R Soluk,A Santra,M Suk,G Levi,S Cecchini,Z Vykydal,L Patrizii,D Felea,L Millward,G Sirri,A Margiotta,M El Sawy,B Parker,D.-W Kim,A De Roeck,V Popa,N Mauri,S Sarkar,O Vives,V Togo,J Mamuzic,M Pozzato,Z Sahnoun,M Campbell,R Orava,J Hays,J Bernabéu,V Vento,M De Montigny,M Spurio,A Wall,Ann M Hirt ,Gordon W Semenoff ,Joannis Papavassiliou ,Mariana Frank ,A L Lionti ,S Pospı́šil ,Arttu Rajantie ,A J Bevan ,J A Tuszyński ,Michael Staelens ,H Brânzaş ,Jean Alexandre ,Nick E Mavromatos ,V A Mitsou ,P Beneš ,Malcolm Fairbairn ,S C Lee ,John Ellis ,Roberto Ruiz De Austri ,Y M Cho ,M M Mieskolainen ,D Lacarrère ,J L Pinfold ,K Śliwa ,G E Păvălaş ,Mairi Sakellariadou ,I S Zgura

doi:10.1103/physrevlett.123.021802

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 794kg of aluminum samples installed in the forward and lateral regions, was exposed to 4.0 fb^{-1} of 13TeV 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.

Highlights

Magnetic Monopole Search with the Full MoEDAL Trapping Detector in 13 TeV pp Collisions Interpreted in Photon-Fusion and Drell-Yan Production
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
Magnetic charges equal to or above the Dirac charge are excluded in all samples

Summary

Introduction

Magnetic Monopole Search with the Full MoEDAL Trapping Detector in 13 TeV pp Collisions Interpreted in Photon-Fusion and Drell-Yan Production. Using the multiple candidate measurements to model the probability distribution of pole strength values, in the worst case in which one misses a monopole three times out of five measurements, an estimated false-negative probability of less than 0.2% is obtained for magnetic charges of 1gD.

Results

Conclusion