Research and Publications - Department of Physics & Astronomy

Permanent URI for this collection

https://ir.ua.edu/handle/123456789/2850

Browse

Browsing Research and Publications - Department of Physics & Astronomy by Author "Abdus Salam International Centre for Theoretical Physics (ICTP)"

Now showing 1 - 4 of 4
  • Thumbnail Image
    Item
    First Search for Dyons with the Full MoEDAL Trapping Detector in 13 TeV pp Collisions
    (American Physical Society, 2021) MoEDAL Collaboration; Ostrovskiy, I.; Upreti, A.; Wall, A.; University of London; King's College London; Czech Technical University Prague; Consejo Superior de Investigaciones Cientificas (CSIC); CSIC - Instituto de Fisica Corpuscular (IFIC); University of Valencia; Queen Mary University London; University College London; Institute of Space Science; European Organization for Nuclear Research (CERN); Istituto Nazionale di Fisica Nucleare (INFN); Sogang University; University of Alberta; Concordia University - Canada; Swiss Federal Institutes of Technology Domain; ETH Zurich; University of Helsinki; University of Geneva; Universite de Montreal; University of Bologna; University of Alabama Tuscaloosa; Imperial College London; University of British Columbia; Tufts University; Abdus Salam International Centre for Theoretical Physics (ICTP); National Institute of Chemical Physics & Biophysics (NICPB); Egyptian Knowledge Bank (EKB); Beni Suef University; University of Regina
    The MoEDAL trapping detector consists of approximately 800 kg of aluminum volumes. It was exposed during run 2 of the LHC program to \(6.46\text{}\text{}{\mathrm{fb}}^{-1}\) of 13 TeV proton-proton collisions at the LHCb interaction point. Evidence for dyons (particles with electric and magnetic charge) captured in the trapping detector was sought by passing the aluminum volumes comprising the detector through a superconducting quantum interference device (SQUID) magnetometer. The presence of a trapped dyon would be signaled by a persistent current induced in the SQUID magnetometer. On the basis of a Drell-Yan production model, we exclude dyons with a magnetic charge ranging up to five Dirac charges (\(5{g}_{D}\)) and an electric charge up to 200 times the fundamental electric charge for mass limits in the range 870–3120 GeV and also monopoles with magnetic charge up to and including 5\({g}_{D}\) with mass limits in the range 870–2040 GeV.
  • Thumbnail Image
    Item
    Magnetic Monopole Search with the Full MoEDAL Trapping Detector in 13 TeV pp Collisions Interpreted in Photon-Fusion and Drell-Yan Production
    (American Physical Society, 2019) MoEDAL Collaboration; Ostrovskiy, I.; Wall, A.; University of London; King's College London; Czech Technical University Prague; Consejo Superior de Investigaciones Cientificas (CSIC); CSIC - Instituto de Fisica Corpuscular (IFIC); University of Valencia; Queen Mary University London; University College London; Institute of Space Science; European Organization for Nuclear Research (CERN); Istituto Nazionale di Fisica Nucleare (INFN); Konkuk University; University of Alberta; Concordia University - Canada; Swiss Federal Institutes of Technology Domain; ETH Zurich; Kangnung Wonju National University; University of Geneva; Universite de Montreal; University of Bologna; University of Helsinki; University of Alabama Tuscaloosa; Imperial College London; University of British Columbia; Tufts University; Abdus Salam International Centre for Theoretical Physics (ICTP); Sogang University; National Institute of Chemical Physics & Biophysics (NICPB); Egyptian Knowledge Bank (EKB); Beni Suef University; British University in Egypt
    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 \(4.0\text{}\text{}{\mathrm{fb}}^{-1}\) 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.
  • Thumbnail Image
    Item
    Search for magnetic monopoles with the MoEDAL forward trapping detector in 2.11 fb(-1) of 13 TeV proton-proton collisions at the LHC
    (Elsevier, 2018) MoEDAL Collaboration; Ostrovskiy, I.; University of London; King's College London; Abdus Salam International Centre for Theoretical Physics (ICTP); Czech Technical University Prague; Consejo Superior de Investigaciones Cientificas (CSIC); CSIC - Instituto de Fisica Corpuscular (IFIC); University of Valencia; Queen Mary University London; University College London; Institute of Space Science; European Organization for Nuclear Research (CERN); Istituto Nazionale di Fisica Nucleare (INFN); University of Alberta; National Institute of Chemical Physics & Biophysics (NICPB); University of Geneva; Concordia University - Canada; University of Munster; Swiss Federal Institutes of Technology Domain; ETH Zurich; Kangnung Wonju National University; University System of Ohio; University of Cincinnati; Universite de Montreal; University of Bologna; University of Helsinki; University of Alabama Tuscaloosa; Imperial College London; University of British Columbia; Nanyang Technological University & National Institute of Education (NIE) Singapore; Nanyang Technological University; Tufts University; Northeastern University; Konkuk University
    We update our previous search for trapped magnetic monopoles in LHC Run 2 using nearly six times more integrated luminosity and including additional models for the interpretation of the data. The MoEDAL forward trapping detector, comprising 222 kg of aluminium samples, was exposed to 2.11 fb\(^{−1}\) of 13 TeV proton–proton collisions near the LHCb interaction point and analysed by searching for induced persistent currents after passage through a superconducting magnetometer. Magnetic charges equal to the Dirac charge or above are excluded in all samples. The results are interpreted in Drell–Yan production models for monopoles with spins 0, 1/2 and 1: in addition to standard point-like couplings, we also consider couplings with momentum-dependent form factors. The search provides the best current laboratory constraints for monopoles with magnetic charges ranging from two to five times the Dirac charge.
  • Thumbnail Image
    Item
    Supersymmetric extension of the Snyder algebra
    (Elsevier, 2012-04-11) Gouba, L.; Stern, A.; University of Alabama Tuscaloosa; Abdus Salam International Centre for Theoretical Physics (ICTP)
    We obtain a minimal supersymmetric extension of the Snyder algebra and study its representations. The construction differs from the general approach given in Hatsuda and Siegel (arXiv:hep-th/0311002) and does not utilize super-de Sitter groups. The spectra of the position operators are discrete. implying a lattice description of space, and the lattice is compatible with supersymmetry transformations. (C) 2011 Elsevier B.V. All rights reserved.