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Search for magnetic monopoles produced via the Schwinger mechanism
At the Large Hadron Collider, the MoEDAL experiment shows no evidence for magnetic monopoles generated via the Schwinger mechanism at integer Dirac charges below 3, and suggests a lower mass limit of 75 GeV/c$^{2}$.
| Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Lenguaje: | eng |
| Publicado: |
2021
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1038/s41586-021-04298-1 http://cds.cern.ch/record/2801059 |
| _version_ | 1780972674358444032 |
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| author | Acharya, B. Alexandre, J. Benes, P. Bergmann, B. Bertolucci, S. Bevan, A. Branzas, H. Burian, P. Campbell, M. Cho, Y.M. de Montigny, M. De Roeck, A. Ellis, J.R. Sawy, M. El Fairbairn, M. Felea, D. Frank, M. Gould, O. Hays, J. Hirt, A.M. Ho, D.L.-J. Hung, P.Q. Janecek, J. Kalliokoski, M. Korzenev, A. Lacarrère, D.H. Leroy, C. Levi, G. Lionti, A. Maulik, A. Margiotta, A. Mauri, N. Mavromatos, N.E. Mermod, P. Millward, L. Mitsou, V.A. Ostrovskiy, I. Ouimet, P.-P. Papavassiliou, J. Parker, B. Patrizii, L. Păvălaş, G.E. Pinfold, J.L. Popa, L.A. Popa, V. Pozzato, M. Pospisil, S. Rajantie, A. de Austri, R. Ruiz Sahnoun, Z. Sakellariadou, M. Santra, A. Sarkar, S. Semenoff, G. Shaa, A. Sirri, G. Sliwa, K. Soluk, R. Spurio, M. Staelens, M. Suk, M. Tenti, M. Togo, V. Tuszyn’ski, J.A. Upreti, A. Vento, V. Vives, O. |
| author_facet | Acharya, B. Alexandre, J. Benes, P. Bergmann, B. Bertolucci, S. Bevan, A. Branzas, H. Burian, P. Campbell, M. Cho, Y.M. de Montigny, M. De Roeck, A. Ellis, J.R. Sawy, M. El Fairbairn, M. Felea, D. Frank, M. Gould, O. Hays, J. Hirt, A.M. Ho, D.L.-J. Hung, P.Q. Janecek, J. Kalliokoski, M. Korzenev, A. Lacarrère, D.H. Leroy, C. Levi, G. Lionti, A. Maulik, A. Margiotta, A. Mauri, N. Mavromatos, N.E. Mermod, P. Millward, L. Mitsou, V.A. Ostrovskiy, I. Ouimet, P.-P. Papavassiliou, J. Parker, B. Patrizii, L. Păvălaş, G.E. Pinfold, J.L. Popa, L.A. Popa, V. Pozzato, M. Pospisil, S. Rajantie, A. de Austri, R. Ruiz Sahnoun, Z. Sakellariadou, M. Santra, A. Sarkar, S. Semenoff, G. Shaa, A. Sirri, G. Sliwa, K. Soluk, R. Spurio, M. Staelens, M. Suk, M. Tenti, M. Togo, V. Tuszyn’ski, J.A. Upreti, A. Vento, V. Vives, O. |
| author_sort | Acharya, B. |
| collection | CERN |
| description | At the Large Hadron Collider, the MoEDAL experiment shows no evidence for magnetic monopoles generated via the Schwinger mechanism at integer Dirac charges below 3, and suggests a lower mass limit of 75 GeV/c$^{2}$. |
| id | cern-2801059 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2021 |
| record_format | invenio |
| spelling | cern-28010592023-01-31T09:42:07Zdoi:10.1038/s41586-021-04298-1http://cds.cern.ch/record/2801059engAcharya, B.Alexandre, J.Benes, P.Bergmann, B.Bertolucci, S.Bevan, A.Branzas, H.Burian, P.Campbell, M.Cho, Y.M.de Montigny, M.De Roeck, A.Ellis, J.R.Sawy, M. ElFairbairn, M.Felea, D.Frank, M.Gould, O.Hays, J.Hirt, A.M.Ho, D.L.-J.Hung, P.Q.Janecek, J.Kalliokoski, M.Korzenev, A.Lacarrère, D.H.Leroy, C.Levi, G.Lionti, A.Maulik, A.Margiotta, A.Mauri, N.Mavromatos, N.E.Mermod, P.Millward, L.Mitsou, V.A.Ostrovskiy, I.Ouimet, P.-P.Papavassiliou, J.Parker, B.Patrizii, L.Păvălaş, G.E.Pinfold, J.L.Popa, L.A.Popa, V.Pozzato, M.Pospisil, S.Rajantie, A.de Austri, R. RuizSahnoun, Z.Sakellariadou, M.Santra, A.Sarkar, S.Semenoff, G.Shaa, A.Sirri, G.Sliwa, K.Soluk, R.Spurio, M.Staelens, M.Suk, M.Tenti, M.Togo, V.Tuszyn’ski, J.A.Upreti, A.Vento, V.Vives, O.Search for magnetic monopoles produced via the Schwinger mechanismhep-phParticle Physics - Phenomenologyhep-exParticle Physics - ExperimentAt the Large Hadron Collider, the MoEDAL experiment shows no evidence for magnetic monopoles generated via the Schwinger mechanism at integer Dirac charges below 3, and suggests a lower mass limit of 75 GeV/c$^{2}$.Schwinger showed that electrically-charged particles can be produced in a strong electric field by quantum tunnelling through the Coulomb barrier. By electromagnetic duality, if magnetic monopoles (MMs) exist, they would be produced by the same mechanism in a sufficiently strong magnetic field. Unique advantages of the Schwinger mechanism are that its rate can be calculated using semiclassical techniques without relying on perturbation theory, and the finite MM size and strong MM-photon coupling are expected to enhance their production. Pb-Pb heavy-ion collisions at the LHC produce the strongest known magnetic fields in the current Universe, and this article presents the first search for MM production by the Schwinger mechanism. It was conducted by the MoEDAL experiment during the 5.02 TeV/nucleon heavy-ion run at the LHC in November 2018, during which the MoEDAL trapping detectors (MMTs) were exposed to 0.235 nb$^{-1}$ of Pb-Pb collisions. The MMTs were scanned for the presence of magnetic charge using a SQUID magnetometer. MMs with Dirac charges 1$g_D$$\leq$$g$$\leq$ 3$g_D$ and masses up to 75 GeV/c$^2$ were excluded by the analysis. This provides the first lower mass limit for finite-size MMs from a collider search and significantly extends previous mass bounds.arXiv:2106.11933oai:cds.cern.ch:28010592021-06-22 |
| spellingShingle | hep-ph Particle Physics - Phenomenology hep-ex Particle Physics - Experiment Acharya, B. Alexandre, J. Benes, P. Bergmann, B. Bertolucci, S. Bevan, A. Branzas, H. Burian, P. Campbell, M. Cho, Y.M. de Montigny, M. De Roeck, A. Ellis, J.R. Sawy, M. El Fairbairn, M. Felea, D. Frank, M. Gould, O. Hays, J. Hirt, A.M. Ho, D.L.-J. Hung, P.Q. Janecek, J. Kalliokoski, M. Korzenev, A. Lacarrère, D.H. Leroy, C. Levi, G. Lionti, A. Maulik, A. Margiotta, A. Mauri, N. Mavromatos, N.E. Mermod, P. Millward, L. Mitsou, V.A. Ostrovskiy, I. Ouimet, P.-P. Papavassiliou, J. Parker, B. Patrizii, L. Păvălaş, G.E. Pinfold, J.L. Popa, L.A. Popa, V. Pozzato, M. Pospisil, S. Rajantie, A. de Austri, R. Ruiz Sahnoun, Z. Sakellariadou, M. Santra, A. Sarkar, S. Semenoff, G. Shaa, A. Sirri, G. Sliwa, K. Soluk, R. Spurio, M. Staelens, M. Suk, M. Tenti, M. Togo, V. Tuszyn’ski, J.A. Upreti, A. Vento, V. Vives, O. Search for magnetic monopoles produced via the Schwinger mechanism |
| title | Search for magnetic monopoles produced via the Schwinger mechanism |
| title_full | Search for magnetic monopoles produced via the Schwinger mechanism |
| title_fullStr | Search for magnetic monopoles produced via the Schwinger mechanism |
| title_full_unstemmed | Search for magnetic monopoles produced via the Schwinger mechanism |
| title_short | Search for magnetic monopoles produced via the Schwinger mechanism |
| title_sort | search for magnetic monopoles produced via the schwinger mechanism |
| topic | hep-ph Particle Physics - Phenomenology hep-ex Particle Physics - Experiment |
| url | https://dx.doi.org/10.1038/s41586-021-04298-1 http://cds.cern.ch/record/2801059 |
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