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Probing the explanation of the muon (g-2) anomaly and thermal light dark matter with the semi-visible dark photon channel.
Cazzaniga, C; Odagiu, P; Depero, E; Molina Bueno, L; Andreev, Yu M; Banerjee, D; Bernhard, J; Burtsev, V E; Charitonidis, N; Chumakov, A G; Cooke, D; Crivelli, P; Dermenev, A V; Donskov, S V; Dusaev, R R; Enik, T; Feshchenko, A; Frolov, V N; Gardikiotis, A; Gerassimov, S G; Girod, S; Gninenko, S N; Hösgen, 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; Matveev, V A; Mikhailov, Yu V; Peshekhonov, D V; Polyakov, V A; Radics, B; Rojas, R; Rubbia, A; Samoylenko, V D; Shchukin, D; Sieber, H; Tikhomirov, V O; Tlisova, I V.
Affiliation
  • Cazzaniga C; ETH Zürich Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland.
  • Odagiu P; ETH Zürich Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland.
  • Depero E; Institute of Physics, École polytechnique fédérale de Lausanne (EPFL), Lausanne, Switzerland.
  • Molina Bueno L; ETH Zürich Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland.
  • Andreev YM; ETH Zürich Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland.
  • Banerjee D; Instituto de Fisica Corpuscular (CSIC/UV), Carrer del Catedrátic José Beltrán Martinez, 2, 46980 Paterna, Valencia Spain.
  • Bernhard J; Institute for Nuclear Research, 117312 Moscow, Russia.
  • Burtsev VE; CERN, EN-EA, 1211 Geneva 23, Switzerland.
  • Charitonidis N; University of Illinois at Urbana Champaign, Urbana, IL 61801-3080 USA.
  • Chumakov AG; CERN, EN-EA, 1211 Geneva 23, Switzerland.
  • Cooke D; Joint Institute for Nuclear Research, 141980 Dubna, Russia.
  • Crivelli P; CERN, EN-EA, 1211 Geneva 23, Switzerland.
  • Dermenev AV; Tomsk State Pedagogical University, 634061 Tomsk, Russia.
  • Donskov SV; Tomsk Polytechnic University, 634050 Tomsk, Russia.
  • Dusaev RR; UCL Departement of Physics and Astronomy, University College London, Gower St., London, WC1E 6BT UK.
  • Enik T; ETH Zürich Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland.
  • Feshchenko A; Institute for Nuclear Research, 117312 Moscow, Russia.
  • Frolov VN; State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center 'Kurchatov Institute' (IHEP), 142281 Protvino, Russia.
  • Gardikiotis A; Tomsk Polytechnic University, 634050 Tomsk, Russia.
  • Gerassimov SG; Joint Institute for Nuclear Research, 141980 Dubna, Russia.
  • Girod S; Joint Institute for Nuclear Research, 141980 Dubna, Russia.
  • Gninenko SN; Joint Institute for Nuclear Research, 141980 Dubna, Russia.
  • Hösgen M; Physics Department, University of Patras, 265 04 Patras, Greece.
  • Kachanov VA; Physik Department, Technische Universität München, 85748 Garching, Germany.
  • Karneyeu AE; P.N. Lebedev Physical Institute, 119 991 Moscow, Russia.
  • Kekelidze G; CERN, EN-EA, 1211 Geneva 23, Switzerland.
  • Ketzer B; Institute for Nuclear Research, 117312 Moscow, Russia.
  • Kirpichnikov DV; Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany.
  • Kirsanov MM; State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center 'Kurchatov Institute' (IHEP), 142281 Protvino, Russia.
  • Kolosov VN; Institute for Nuclear Research, 117312 Moscow, Russia.
  • Konorov IV; Joint Institute for Nuclear Research, 141980 Dubna, Russia.
  • Kovalenko SG; Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany.
  • Kramarenko VA; Institute for Nuclear Research, 117312 Moscow, Russia.
  • Kravchuk LV; Institute for Nuclear Research, 117312 Moscow, Russia.
  • Krasnikov NV; State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center 'Kurchatov Institute' (IHEP), 142281 Protvino, Russia.
  • Kuleshov SV; Physik Department, Technische Universität München, 85748 Garching, Germany.
  • Lyubovitskij VE; P.N. Lebedev Physical Institute, 119 991 Moscow, Russia.
  • Lysan V; Departamento de Ciencias Físicas, Universidad Andres Bello, Sazié 2212, Piso 7, Santiago, Chile.
  • Matveev VA; Millennium Institute for Subatomic Physics at the High-Energy Frontier (SAPHIR), ICN2019_044, ANID, Santiago, Chile.
  • Mikhailov YV; Joint Institute for Nuclear Research, 141980 Dubna, Russia.
  • Peshekhonov DV; Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119991 Moscow, Russia.
  • Polyakov VA; Institute for Nuclear Research, 117312 Moscow, Russia.
  • Radics B; Institute for Nuclear Research, 117312 Moscow, Russia.
  • Rojas R; Joint Institute for Nuclear Research, 141980 Dubna, Russia.
  • Rubbia A; Departamento de Ciencias Físicas, Universidad Andres Bello, Sazié 2212, Piso 7, Santiago, Chile.
  • Samoylenko VD; Millennium Institute for Subatomic Physics at the High-Energy Frontier (SAPHIR), ICN2019_044, ANID, Santiago, Chile.
  • Shchukin D; Tomsk State Pedagogical University, 634061 Tomsk, Russia.
  • Sieber H; Tomsk Polytechnic University, 634050 Tomsk, Russia.
  • Tikhomirov VO; Millennium Institute for Subatomic Physics at the High-Energy Frontier (SAPHIR), ICN2019_044, ANID, Santiago, Chile.
  • Tlisova IV; Universidad Técnica Federico Santa María, 2390123 Valparaiso, Chile.
Eur Phys J C Part Fields ; 81(10): 959, 2021.
Article in En | MEDLINE | ID: mdl-34790033
ABSTRACT
We report the results of a search for a new vector boson ( A ' ) decaying into two dark matter particles χ 1 χ 2 of different mass. The heavier χ 2 particle subsequently decays to χ 1 and an off-shell Dark Photon A ' ∗ → e + e - . For a sufficiently large mass splitting, this model can explain in terms of new physics the recently confirmed discrepancy observed in the muon anomalous magnetic moment at Fermilab. Remarkably, it also predicts the observed yield of thermal dark matter relic abundance. A detailed Monte-Carlo simulation was used to determine the signal yield and detection efficiency for this channel in the NA64 setup. The results were obtained re-analyzing the previous NA64 searches for an invisible decay A ' → χ χ ¯ and axion-like or pseudo-scalar particles a → γ γ . With this method, we exclude a significant portion of the parameter space justifying the muon g-2 anomaly and being compatible with the observed dark matter relic density for A ' masses from 2 m e up to 390 MeV and mixing parameter ε between 3 × 10 - 5 and 2 × 10 - 2 .
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Full text: 1 Collection: 01-internacional Database: MEDLINE Type of study: Prognostic_studies Language: En Journal: Eur Phys J C Part Fields Year: 2021 Type: Article Affiliation country: Switzerland
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Full text: 1 Collection: 01-internacional Database: MEDLINE Type of study: Prognostic_studies Language: En Journal: Eur Phys J C Part Fields Year: 2021 Type: Article Affiliation country: Switzerland