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Search for magnetic monopoles with the MoEDAL prototype trapping detector in 8 TeV proton-proton collisions at the LHC
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نویسنده
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Acharya B. ,Alexandre J. ,Bendtz K. ,Benes P. ,Bernabéu J. ,Campbell M. ,Cecchini S. ,Chwastowski J. ,Chatterjee A. ,Montigny M. de ,Derendarz D. ,Roeck A. De ,Ellis J. R. ,Fairbairn M. ,Felea D. ,Frank M. ,Frekers D. ,Garcia C. ,Giacomelli G. ,Hasegan D. ,Kalliokoski M. ,Katre A. ,Kim D.-W. ,King M. G. L. ,Kinoshita K. ,Lacarrère D.H. ,Lee S. C. ,Leroy C. ,Lionti A. ,Margiotta A. ,Mauri N. ,Mavromatos N. E. ,Mermod P. ,Milstead D. ,Mitsou V. A. ,Orava R. ,Parker B. ,Pasqualini L. ,Patrizii L. ,Păvălas G. E. ,Pinfold J. L. ,Platkevič M. ,Popa V. ,Pozzato M. ,Pospisil S. ,Rajantie A. ,Sahnoun Z. ,Sakellariadou M. ,Sarkar S. ,Semenoff G. ,Sirri G. ,Sliwa K. ,Soluk R. ,Spurio M. ,Srivastava Y. N. ,Staszewski R. ,Suk M. ,Swain J. ,Tenti M. ,Togo V. ,Trzebinski M. ,Tuszynski J. A. ,Vento V. ,Vives O. ,Vykydal Z. ,Whyntie T. ,Widom A. ,Willems G. ,Yoon J. H.
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منبع
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journal of high energy physics - 2016 - دوره : 2016 - شماره : 8 - صفحه:1 -25
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چکیده
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The moedal experiment is designed to search for magnetic monopoles and other highly-ionising particles produced in high-energy collisions at the lhc. the largely passive moedal detector, deployed at interaction point 8 on the lhc ring, relies on two dedicated direct detection techniques. the first technique is based on stacks of nucleartrack detectors with surface area ~18m2, sensitive to particle ionisation exceeding a high threshold. these detectors are analysed offline by optical scanning microscopes. the second technique is based on the trapping of charged particles in an array of roughly 800 kg of aluminium samples. these samples are monitored offline for the presence of trapped magnetic charge at a remote superconducting magnetometer facility. we present here the results of a search for magnetic monopoles using a 160 kg prototype moedal trapping detector exposed to 8tev proton-proton collisions at the lhc, for an integrated luminosity of 0.75 fb–1. no magnetic charge exceeding 0:5g d (where g d is the dirac magnetic charge) is measured in any of the exposed samples, allowing limits to be placed on monopole production in the mass range 100 gev≤ m ≤ 3500 gev. model-independent cross-section limits are presented in fiducial regions of monopole energy and direction for 1g d ≤ |g| ≤ 6g d, and model-dependent cross-section limits are obtained for drell-yan pair production of spin-1/2 and spin-0 monopoles for 1g d ≤ |g| ≤ 4g d. under the assumption of drell-yan cross sections, mass limits are derived for |g| = 2g d and |g| = 3g d for the first time at the lhc, surpassing the results from previous collider experiments.
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کلیدواژه
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Exotics ,Hadron-Hadron scattering (experiments) ,Particle and resonance production
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آدرس
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King’s College London, Theoretical Particle Physics & Cosmology Group, UK. International Centre for Theoretical Physics, Italy, King’s College London, Theoretical Particle Physics & Cosmology Group, UK, Stockholm University, Physics Department, Sweden, Czech Technical University in Prague, Czech Republic, IFIC, Universitat de València — CSIC, Spain, Experimental Physics Department, CERN, Switzerland, INFN, section of Bologna, section of Bologna, Italy, Institute of Nuclear Physics Polish Academy of Sciences, Poland, Université de Genève, Section de Physique, Switzerland, University of Alberta, Physics Department, Canada, Institute of Nuclear Physics Polish Academy of Sciences, Poland, Experimental Physics Department, CERN, Switzerland, King’s College London, Theoretical Particle Physics & Cosmology Group, UK. Theoretical Physics Department, CERN, Switzerland, King’s College London, Theoretical Particle Physics & Cosmology Group, UK, Institute of Space Science, Romania, Concordia University, Department of Physics, Canada, University of Muenster, Physics Department, Germany, IFIC, Universitat de València — CSIC, Spain, University of Bologna, section of Bologna & Department of Physics & Astronomy, Italy, Concordia University, Department of Physics, Canada, Beams Department, CERN, Switzerland, Université de Genève, Section de Physique, Switzerland, Gangneung-Wonju National University, Physics Department, South Korea, IFIC, Universitat de València — CSIC, Spain, University of Cincinnati, Physics Department, USA, Experimental Physics Department, CERN, Switzerland, Gangneung-Wonju National University, Physics Department, South Korea, Université de Montréal, Département de physique, Canada, Université de Genève, Section de Physique, Switzerland, University of Bologna, section of Bologna & Department of Physics & Astronomy, Italy, INFN, section of Bologna, section of Bologna, Italy, King’s College London, Theoretical Particle Physics & Cosmology Group, UK, Université de Genève, Section de Physique, Switzerland, Stockholm University, Physics Department, Sweden, IFIC, Universitat de València — CSIC, Spain, University of Helsinki, Physics Department, Finland, Institute for Research in Schools, England, University of Bologna, section of Bologna & Department of Physics & Astronomy, Italy, INFN, section of Bologna, section of Bologna, Italy, Institute of Space Science, Romania, University of Alberta, Physics Department, Canada, Czech Technical University in Prague, Czech Republic, Institute of Space Science, Romania, INFN, section of Bologna, section of Bologna, Italy, Czech Technical University in Prague, Czech Republic, Imperial College London, Department of Physics, UK, INFN, section of Bologna, section of Bologna, Italy. Centre for Astronomy, Algeria, King’s College London, Theoretical Particle Physics & Cosmology Group, UK, King’s College London, Theoretical Particle Physics & Cosmology Group, UK, University of British Columbia, Department of Physics, Canada, INFN, section of Bologna, section of Bologna, Italy, Tufts University, Department of Physics and Astronomy, USA, University of Alberta, Physics Department, Canada, University of Bologna, section of Bologna & Department of Physics & Astronomy, Italy, Northeastern University, Physics Department, USA, Institute of Nuclear Physics Polish Academy of Sciences, Poland, Czech Technical University in Prague, Czech Republic, Northeastern University, Physics Department, USA, INFN, CNAF, Italy, INFN, section of Bologna, section of Bologna, Italy, Institute of Nuclear Physics Polish Academy of Sciences, Poland, University of Alberta, Physics Department, Canada, IFIC, Universitat de València — CSIC, Spain, IFIC, Universitat de València — CSIC, Spain, Czech Technical University in Prague, Czech Republic, Institute for Research in Schools, England. Queen Mary University of London, England, Northeastern University, Physics Department, USA, University of Muenster, Physics Department, Germany, Konkuk University, Physics Department, South Korea
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Authors
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