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Improved exclusion limit for light dark matter from $e^+e^-$ annihilation in NA64
The current most stringent constraints for the existence of sub-GeV dark matter coupling to Standard Model via a massive vector boson <math display="inline"><msup><mi>A</mi><mo>′</mo></msup></math> were set by the NA64 experiment for the mass...
| Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Lenguaje: | eng |
| Publicado: |
2021
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1103/PhysRevD.104.L091701 http://cds.cern.ch/record/2778372 |
| _version_ | 1780971741838835712 |
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| author | Andreev, Yu.M. Banerjee, D. Bernhard, J. Bondi, M. Burtsev, V.E. Celentano, A. Charitonidis, N. Chumakov, A.G. Cooke, D. Crivelli, P. Depero, E. Dermenev, A.V. Donskov, S.V. Dusaev, R.R. Enik, T. Feshchenko, A. Frolov, V.N. Gardikiotis, A. Gerassimov, S.G. Gninenko, S.N. Hösgen, M. Jeckel, M. Kachanov, V.A. Karneyeu, A.E. Kekelidze, G. Ketzer, B. Kirpichnikov, D.V. Kirsanov, M.M. Kolosov, V.N. Konorov, I.V. Kovalenko, S.G. Kramarenko, V.A. Kravchuk, L.V. Krasnikov, N.V. Kuleshov, S.V. Lyubovitskij, V.E. Lysan, V. Marsicano, L. Matveev, V.A. Mikhailov, Yu.V. Bueno, L. Molina Peshekhonov, D.V. Polyakov, V.A. Radics, B. Rojas, R. Rubbia, A. Samoylenko, V.D. Sieber, H. Shchukin, D. Tikhomirov, V.O. Tlisova, I. Toropin, A.N. Trifonov, A.Yu. Ulloa, P. Vasilishin, B.I. Vasquez Arenas, G. Volkov, P.V. Volkov, V.Yu. |
| author_facet | Andreev, Yu.M. Banerjee, D. Bernhard, J. Bondi, M. Burtsev, V.E. Celentano, A. Charitonidis, N. Chumakov, A.G. Cooke, D. Crivelli, P. Depero, E. Dermenev, A.V. Donskov, S.V. Dusaev, R.R. Enik, T. Feshchenko, A. Frolov, V.N. Gardikiotis, A. Gerassimov, S.G. Gninenko, S.N. Hösgen, M. Jeckel, M. Kachanov, V.A. Karneyeu, A.E. Kekelidze, G. Ketzer, B. Kirpichnikov, D.V. Kirsanov, M.M. Kolosov, V.N. Konorov, I.V. Kovalenko, S.G. Kramarenko, V.A. Kravchuk, L.V. Krasnikov, N.V. Kuleshov, S.V. Lyubovitskij, V.E. Lysan, V. Marsicano, L. Matveev, V.A. Mikhailov, Yu.V. Bueno, L. Molina Peshekhonov, D.V. Polyakov, V.A. Radics, B. Rojas, R. Rubbia, A. Samoylenko, V.D. Sieber, H. Shchukin, D. Tikhomirov, V.O. Tlisova, I. Toropin, A.N. Trifonov, A.Yu. Ulloa, P. Vasilishin, B.I. Vasquez Arenas, G. Volkov, P.V. Volkov, V.Yu. |
| author_sort | Andreev, Yu.M. |
| collection | CERN |
| description | The current most stringent constraints for the existence of sub-GeV dark matter coupling to Standard Model via a massive vector boson <math display="inline"><msup><mi>A</mi><mo>′</mo></msup></math> were set by the NA64 experiment for the mass region <math display="inline"><msub><mi>m</mi><msup><mi>A</mi><mo>′</mo></msup></msub><mo>≲</mo><mn>250</mn><mtext> </mtext><mtext> </mtext><mi>MeV</mi></math>, by analyzing data from the interaction of <math display="inline"><mn>2.84</mn><mo>×</mo><msup><mn>10</mn><mn>11</mn></msup></math> 100-GeV electrons with an active thick target and searching for missing-energy events. In this work, by including <math display="inline"><msup><mi>A</mi><mo>′</mo></msup></math> production via secondary positron annihilation with atomic electrons, we extend these limits in the 200–300 MeV region by almost an order of magnitude, touching for the first time the dark matter relic density constrained parameter combinations. Our new results demonstrate the power of the resonant annihilation process in missing energy dark-matter searches, paving the road to future dedicated <math display="inline"><msup><mi>e</mi><mo>+</mo></msup></math> beam efforts. |
| id | cern-2778372 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2021 |
| record_format | invenio |
| spelling | cern-27783722023-10-26T07:11:58Zdoi:10.1103/PhysRevD.104.L091701http://cds.cern.ch/record/2778372engAndreev, Yu.M.Banerjee, D.Bernhard, J.Bondi, M.Burtsev, V.E.Celentano, A.Charitonidis, N.Chumakov, A.G.Cooke, D.Crivelli, P.Depero, E.Dermenev, A.V.Donskov, S.V.Dusaev, R.R.Enik, T.Feshchenko, A.Frolov, V.N.Gardikiotis, A.Gerassimov, S.G.Gninenko, S.N.Hösgen, M.Jeckel, M.Kachanov, V.A.Karneyeu, A.E.Kekelidze, G.Ketzer, B.Kirpichnikov, D.V.Kirsanov, M.M.Kolosov, V.N.Konorov, I.V.Kovalenko, S.G.Kramarenko, V.A.Kravchuk, L.V.Krasnikov, N.V.Kuleshov, S.V.Lyubovitskij, V.E.Lysan, V.Marsicano, L.Matveev, V.A.Mikhailov, Yu.V.Bueno, L. MolinaPeshekhonov, D.V.Polyakov, V.A.Radics, B.Rojas, R.Rubbia, A.Samoylenko, V.D.Sieber, H.Shchukin, D.Tikhomirov, V.O.Tlisova, I.Toropin, A.N.Trifonov, A.Yu.Ulloa, P.Vasilishin, B.I.Vasquez Arenas, G. Volkov, P.V.Volkov, V.Yu.Improved exclusion limit for light dark matter from $e^+e^-$ annihilation in NA64hep-phParticle Physics - Phenomenologyhep-exParticle Physics - ExperimentThe current most stringent constraints for the existence of sub-GeV dark matter coupling to Standard Model via a massive vector boson <math display="inline"><msup><mi>A</mi><mo>′</mo></msup></math> were set by the NA64 experiment for the mass region <math display="inline"><msub><mi>m</mi><msup><mi>A</mi><mo>′</mo></msup></msub><mo>≲</mo><mn>250</mn><mtext> </mtext><mtext> </mtext><mi>MeV</mi></math>, by analyzing data from the interaction of <math display="inline"><mn>2.84</mn><mo>×</mo><msup><mn>10</mn><mn>11</mn></msup></math> 100-GeV electrons with an active thick target and searching for missing-energy events. In this work, by including <math display="inline"><msup><mi>A</mi><mo>′</mo></msup></math> production via secondary positron annihilation with atomic electrons, we extend these limits in the 200–300 MeV region by almost an order of magnitude, touching for the first time the dark matter relic density constrained parameter combinations. Our new results demonstrate the power of the resonant annihilation process in missing energy dark-matter searches, paving the road to future dedicated <math display="inline"><msup><mi>e</mi><mo>+</mo></msup></math> beam efforts.The current most stringent constraints for the existence of sub-GeV dark matter coupling to Standard Model via a massive vector boson $A^\prime$ were set by the NA64 experiment for the mass region $m_{A^\prime}\lesssim 250$ MeV, by analyzing data from the interaction of $2.84\cdot10^{11}$ 100-GeV electrons with an active thick target and searching for missing-energy events. In this work, by including $A^\prime$ production via secondary positron annihilation with atomic electrons, we extend these limits in the $200$-$300$ MeV region by almost an order of magnitude, touching for the first time the dark matter relic density constrained parameter combinations. Our new results demonstrate the power of the resonant annihilation process in missing energy dark-matter searches, paving the road to future dedicated $e^+$ beam efforts.arXiv:2108.04195CERN-EP-2021-164oai:cds.cern.ch:27783722021-08-09 |
| spellingShingle | hep-ph Particle Physics - Phenomenology hep-ex Particle Physics - Experiment Andreev, Yu.M. Banerjee, D. Bernhard, J. Bondi, M. Burtsev, V.E. Celentano, A. Charitonidis, N. Chumakov, A.G. Cooke, D. Crivelli, P. Depero, E. Dermenev, A.V. Donskov, S.V. Dusaev, R.R. Enik, T. Feshchenko, A. Frolov, V.N. Gardikiotis, A. Gerassimov, S.G. Gninenko, S.N. Hösgen, M. Jeckel, M. Kachanov, V.A. Karneyeu, A.E. Kekelidze, G. Ketzer, B. Kirpichnikov, D.V. Kirsanov, M.M. Kolosov, V.N. Konorov, I.V. Kovalenko, S.G. Kramarenko, V.A. Kravchuk, L.V. Krasnikov, N.V. Kuleshov, S.V. Lyubovitskij, V.E. Lysan, V. Marsicano, L. Matveev, V.A. Mikhailov, Yu.V. Bueno, L. Molina Peshekhonov, D.V. Polyakov, V.A. Radics, B. Rojas, R. Rubbia, A. Samoylenko, V.D. Sieber, H. Shchukin, D. Tikhomirov, V.O. Tlisova, I. Toropin, A.N. Trifonov, A.Yu. Ulloa, P. Vasilishin, B.I. Vasquez Arenas, G. Volkov, P.V. Volkov, V.Yu. Improved exclusion limit for light dark matter from $e^+e^-$ annihilation in NA64 |
| title | Improved exclusion limit for light dark matter from $e^+e^-$ annihilation in NA64 |
| title_full | Improved exclusion limit for light dark matter from $e^+e^-$ annihilation in NA64 |
| title_fullStr | Improved exclusion limit for light dark matter from $e^+e^-$ annihilation in NA64 |
| title_full_unstemmed | Improved exclusion limit for light dark matter from $e^+e^-$ annihilation in NA64 |
| title_short | Improved exclusion limit for light dark matter from $e^+e^-$ annihilation in NA64 |
| title_sort | improved exclusion limit for light dark matter from $e^+e^-$ annihilation in na64 |
| topic | hep-ph Particle Physics - Phenomenology hep-ex Particle Physics - Experiment |
| url | https://dx.doi.org/10.1103/PhysRevD.104.L091701 http://cds.cern.ch/record/2778372 |
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