Probing the explanation of the muon (g-2) anomaly and thermal light dark matter with the semi-visible dark photon channel

被引：16

作者：

Cazzaniga, C. ^{[1
]}

Odagiu, P. ^{[1
,2
]}

Depero, E. ^{[1
]}

Bueno, L. Molina ^{[1
,3
]}

Andreev, Yu M. ^{[4
]}

Banerjee, D. ^{[5
,6
]}

Bernhard, J. ^{[5
]}

Burtsev, V. E. ^{[7
]}

Charitonidis, N. ^{[5
]}

Chumakov, A. G. ^{[8
,11
]}

Cooke, D. ^{[9
]}

Crivelli, P. ^{[1
]}

Dermenev, A., V ^{[4
]}

Donskov, S., V ^{[10
]}

Dusaev, R. R. ^{[11
]}

Enik, T. ^{[7
]}

Feshchenko, A. ^{[7
]}

Frolov, V. N. ^{[7
]}

Gardikiotis, A. ^{[12
]}

Gerassimov, S. G. ^{[13
,14
]}

Girod, S. ^{[5
]}

Gninenko, S. N. ^{[4
]}

Hosgen, M. ^{[15
]}

Kachanov, V. A. ^{[10
]}

Karneyeu, A. E. ^{[4
]}

Kekelidze, G. ^{[7
]}

Ketzer, B. ^{[15
]}

Kirpichnikov, D., V ^{[4
]}

Kirsanov, M. M. ^{[4
]}

Kolosov, V. N. ^{[10
]}

Konorov, I., V ^{[13
,14
]}

Kovalenko, S. G. ^{[16
,17
]}

Kramarenko, V. A. ^{[7
,18
]}

Kravchuk, L., V ^{[4
]}

Krasnikov, N., V ^{[4
,7
]}

Kuleshov, S., V ^{[16
,17
]}

Lyubovitskij, V. E. ^{[8
,11
,17
,19
]}

Lysan, V ^{[7
]}

Matveev, V. A. ^{[7
]}

Mikhailov, Yu, V ^{[10
]}

Peshekhonov, D., V ^{[7
]}

Polyakov, V. A. ^{[10
]}

Radics, B. ^{[1
]}

Rojas, R. ^{[19
]}

Rubbia, A. ^{[1
]}

Samoylenko, V. D. ^{[10
]}

Shchukin, D. ^{[14
]}

Sieber, H. ^{[1
]}

Tikhomirov, V. O. ^{[14
]}

Tlisova, I., V ^{[4
]}

机构：

[1] Swiss Fed Inst Technol, Inst Particle Phys & Astrophys, CH-8093 Zurich, Switzerland

[2] Ecole Polytech Fed Lausanne EPFL, Inst Phys, Lausanne, Switzerland

[3] UV, Inst Fis Corpuscular, CSIC, Caner Catedrat Jose Beltran Martinez 2, Valencia 46980, Spain

[4] Inst Nucl Res, Moscow 117312, Russia

[5] CERN, EN EA, CH-1211 Geneva 23, Switzerland

[6] Univ Illinois, Urbana, IL 61801 USA

[7] Joint Inst Nucl Res, Dubna 141980, Russia

[8] Tomsk State Pedag Univ, Tomsk 634061, Russia

[9] UCL, UCL Dept Phys & Astron, Gower St, London WC1E 6BT, England

[10] Kurchatov Inst IHEP, Russian Federat Inst High Energy Phys, State Sci Ctr, Natl Res Ctr, Protvino 142281, Russia

[11] Tomsk Polytech Univ, Tomsk 634050, Russia

[12] Univ Patras, Phys Dept, Patras 26504, Greece

[13] Tech Univ Munich, Phys Dept, D-85748 Garching, Germany

[14] PN Lebedev Phys Inst, Moscow 119991, Russia

[15] Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany

[16] Univ Andres Bello, Dept Ciencias Fis, Sazie 2212,Piso 7, Santiago, Chile

[17] Millennium Inst Subat Phys High Energy Frontier S, ICN2019 044, ANID, Santiago, Chile

[18] Lomonosov Moscow State Univ, Skobeltsyn Inst Nucl Phys, Moscow 119991, Russia

[19] Univ Tecn Federico Santa Maria, Valparaiso 2390123, Chile

来源：

EUROPEAN PHYSICAL JOURNAL C | 2021年 / 81卷 / 10期

关键词：

EXCLUSION LIMITS; GAUGE FORCES; SEARCH; ELECTRON;

D O I：

10.1140/epjc/s10052-021-09705-5

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：

We report the results of a search for a new vector boson (A') decaying into two dark matter particles chi 1 chi 2 of different mass. The heavier chi(2) particle subsequently decays to chi 1 and an off-shell Dark Photon A'* -> e(+)e(-). For a sufficiently largemass splitting, this model can explain in terms of new physics the recently confirmed discrepancy observed in themuon anomalous magnetic moment at Fermilab. Remark- ably, 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 reanalyzing the previous NA64 searches for an invisible decay A' -> chi(chi) over bar and axion-like or pseudo-scalar particles -> gamma gamma. 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 2m(e) up to 390 MeV and mixing parameter e between 3 x 10(-5) and 2 x 10(-2).

引用

页数：6

共 38 条

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Cooke, D.
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Feshchenko, A.
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Kachanov, V. A.
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Kirpichnikov, D. V.
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Kolosov, V. N.
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Krasnikov, N. V.
Kuleshov, S. V.
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