Search formagnetic monopoles with the MoEDAL prototype trapping detector in 8 TeV proton-proton collisions at the LHC

被引：38

作者：

Acharya, B. ^{[1
,2
]}

Alexandre, J. ^{[1
]}

Bendtz, K. ^{[26
]}

Benes, P. ^{[15
]}

Bernabeu, J. ^{[3
]}

Campbell, M. ^{[4
]}

Cecchini, S. ^{[27
]}

Chwastowski, J. ^{[9
]}

Chatterjee, A. ^{[16
]}

de Montigny, M. ^{[10
]}

Derendarz, D. ^{[9
]}

De Roeck, A. ^{[4
]}

Ellis, J. R. ^{[1
,5
]}

Fairbairn, M. ^{[1
]}

Felea, D. ^{[11
]}

Frank, M. ^{[12
]}

Frekers, D. ^{[14
]}

Garcia, C. ^{[3
]}

Giacomelli, G. ^{[7
,8
]}

Hasegan, D. ^{[12
]}

Kalliokoski, M. ^{[6
]}

Katre, A. ^{[16
]}

Kim, D. -W. ^{[17
]}

King, M. G. L. ^{[3
]}

Kinoshita, K. ^{[18
]}

Lacarrere, D. H. ^{[4
]}

Lee, S. C. ^{[17
]}

Leroy, C. ^{[13
]}

Lionti, A. ^{[16
]}

Margiotta, A. ^{[7
,8
]}

Mauri, N. ^{[27
]}

Mavromatos, N. E. ^{[1
]}

Mermod, P. ^{[16
]}

Milstead, D. ^{[26
]}

Mitsou, V. A. ^{[26
]}

Orava, R. ^{[19
]}

Parker, B. ^{[29
]}

Pasqualini, L. ^{[7
,8
]}

Patrizii, L. ^{[27
]}

Pavalas, G. E. ^{[11
]}

Pinfold, J. L. ^{[10
]}

Platkevic, M. ^{[15
]}

Popa, V. ^{[11
]}

Pozzato, M. ^{[27
]}

Pospisil, S. ^{[15
]}

Rajantie, A. ^{[20
]}

Sahnoun, Z. ^{[21
,27
]}

Sakellariadou, M. ^{[1
]}

Sarkar, S. ^{[1
]}

Stemenoff, G. ^{[22
]}

机构：

[1] Kings Coll London, Dept Phys, Theoret Particle Phys & Cosmol Grp, London, England

[2] Abdus Salaam Int Ctr Theoret Phys, Trieste, Italy

[3] Univ Valencia, CSIC, IFIC, Valencia, Spain

[4] CERN, Expt Phys Dept, Geneva, Switzerland

[5] CERN, Dept Theoret Phys, Geneva, Switzerland

[6] CERN, Beams Dept, Geneva, Switzerland

[7] Univ Bologna, INFN, Sect Bologna, I-40126 Bologna, Italy

[8] Univ Bologna, Dept Phys & Astron, I-40126 Bologna, Italy

[9] Polish Acad Sci, Inst Nucl Phys, Krakow, Poland

[10] Univ Alberta, Dept Phys, Edmonton, AB, Canada

[11] Inst Space Sci, Bucharest, Romania

[12] Concordia Univ, Dept Phys, Montreal, PQ, Canada

[13] Univ Montreal, Dept Phys, Montreal, PQ, Canada

[14] Univ Munster, Dept Phys, Munster, Germany

[15] Czech Tech Univ, IEAP, Prague, Czech Republic

[16] Univ Geneva, Sect Phys, Geneva, Switzerland

[17] Gangneung Wonju Natl Univ, Dept Phys, Kangnung, South Korea

[18] Univ Cincinnati, Dept Phys, Cincinnati, OH USA

[19] Univ Helsinki, Dept Phys, Helsinki, Finland

[20] Imperial Coll London, Dept Phys, London, England

[21] Ctr Astron Astrophys & Geophys, Algiers, Algeria

[22] Univ British Columbia, Dept Phys, Vancouver, BC, Canada

[23] Tufts Univ, Dept Phys & Astron, Medford, MA USA

[24] Northeastern Univ, Dept Phys, Boston, MA 02115 USA

[25] Konkuk Univ, Dept Phys, Seoul, South Korea

[26] Stockholm Univ, Dept Phys, Stockholm, Sweden

[27] Ist Nazl Fis Nucl, Sect Bologna, Bologna, Italy

[28] Ist Nazl Fis Nucl, CNAF, Bologna, Italy

[29] Inst Res Sch, Canterbury, Kent, England

[30] Queen Mary Univ London, London, England

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2016年 / 08期

基金：

瑞士国家科学基金会; 欧洲研究理事会; 英国科学技术设施理事会;

关键词：

Exotics; Hadron-Hadron scattering (experiments); Particle and resonance production; MAGNETIC MONOPOLES; STOPPING-POWER; PARTICLES; CHARGE;

D O I：

10.1007/JHEP08(2016)067

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

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 nuclear-track detectors with surface area similar to 18 m(2), 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) <= vertical bar g vertical bar <= 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) <= vertical bar g vertical bar <= 4g(D). Under the assumption of Drell-Yan cross sections, mass limits are derived for vertical bar g vertical bar = 2g(D) and vertical bar g vertical bar = 3g(D) for the first time at the LHC, surpassing the results from previous collider experiments.

引用

页数：25

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