2022-01-12 06:18 |
Search for light dark matter in the NA64 experiment
/ Gninenko, S N (Moscow, INR) ; Krasnikov, N V (Moscow, INR ; Dubna, JINR) ; Matveev, V A (Moscow, INR ; Dubna, JINR)
We review the most important models of light dark matter and discuss the NA64 experiment aimed at searching for hypothetical particles, including dark matter, in the mass range $\le \it {O}\rm{(1)}$ GeV with the use of electron and muon beams at the Super Proton Synchrotron (SPS) accelerator at CERN. We consider the methods and results of searches in the NA64 and other accelerator experiments and also discuss their further prospects..
2021 - 26 p.
- Published in : Uspekhi Fiz. Nauk 191 (2021) 1361-1386
External link: Fulltext
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2021-08-12 10:11 |
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2021-07-02 11:17 |
Probing the explanation of the muon (g-2) anomaly and thermal light dark matter with the semi-visible dark photon channel
/ Cazzaniga, C. (Zurich, ETH) ; Odagiu, P. (Zurich, ETH ; EPFL, Lausanne, FSL) ; Depero, E. (Zurich, ETH) ; Bueno, L. Molina (Zurich, ETH ; Valencia U., IFIC) ; Andreev, Yu. M. (Moscow, INR) ; Banerjee, D. (CERN ; Illinois U., Urbana (main)) ; Bernhard, J. (CERN) ; Burtsev, V.E. (Dubna, JINR) ; Charitonidis, N. (CERN) ; Chumakov, A.G. (Tomsk Pedagogical Inst. ; Tomsk Polytechnic U.) et al.
We report the results of a search for a new vector boson ($\gp$) decaying into two dark matter particles $\chi_1 \chi_2$ of different mass. The heavier $\chi_2$ particle subsequently decays to $\chi_1$ and $\gp \to \pair$. [...]
arXiv:2107.02021.-
Geneva : CERN, 2021 - 6.
- Published in : Eur. Phys. J. C 81 (2021) 959
Draft (restricted): PDF; Fulltext: 2107.02021 - PDF; document - PDF; CERN-EP-2021-129 - PDF;
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2021-04-30 04:20 |
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2021-04-26 18:01 |
Search for pseudoscalar bosons decaying into e+e- pairs
/ Banerjee, D ; Bernhard, J ; Burtsev, V ; Chumakov, A ; Cooke, D ; Crivelli, P ; Depero, E ; Dermenev, A ; Donskov, S ; Dusaev, R et al.
/NA64
We report the results of a search for a light pseudoscalar particle $a$ that couples to electrons and decays to $e^+e^-$ performed using the high-energy CERN SPS H4 electron beam. If such pseudoscalar with a mass $\simeq 17$ MeV exists, it could explain the ATOMKI anomaly. [...]
CERN-EP-2021-069.-
Geneva : CERN, 2021 - 6.
Draft (restricted): PDF; Fulltext: PDF;
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2021-04-21 06:17 |
Search for Dark Sector Physics in Missing Energy Events in the NA64 Experiment
/ Kirsanov, Mikhail (Moscow, INR)
A search is performed for a new sub-GeV vector boson (A′) mediated production of Dark Matter (χ) in the fixed-target experiment, NA64, at the CERN SPS. The A′, called dark photon, could be generated in the reaction e−Z → e−ZA′ of 100 GeV electrons dumped against an active target which is followed by the prompt invisible decay A′→χχ¯. [...]
2019 - 17 p.
- Published in : 10.1142/9789811202339_0066
In : 18th Lomonosov Conference on Elementary Particle Physics : Particle Physics at the Silver Jubilee of Lomonosov Conferences, Moscow, Russia, 24 - 30 Aug 2017, pp.353-369
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2021-04-02 06:35 |
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2021-02-06 04:33 |
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2020-10-17 04:07 |
Hunting down the X17 boson at the CERN SPS
/ NA64 Collaboration
Recently, the ATOMKI experiment has reported new evidence for the excess of $e^+ e^-$ events with a mass $\sim$17 MeV in the nuclear transitions of $^4$He, that they previously observed in measurements with $^8$Be. These observations could be explained by the existence of a new vector $X17$ boson. [...]
arXiv:2009.02756.-
2020-12-15 - 17 p.
- Published in : Eur. Phys. J. C 80 (2020) 1159
Article from SCOAP3: PDF; Fulltext: PDF;
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2020-10-17 04:07 |
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