Analysis of a possible explanation of the positron anomaly in terms of dark matter

Alekseev, V. V.; Belotsky, K. M.; Bogomolov, Yu. V.; Budaev, R. I.; Dunaeva, O. A.; Кириллов, А. А.; Кузнецов, А. В.; Lukyanov, A. D.; Malakhov, V.; Mayorov, A. G.; Mayorova, M. A.; Okrugin, A. A.; Rodenko, S. A.; Shitova, A. M.

doi:10.1134/s1063778817040020

Cited by 6 publications

(5 citation statements)

References 11 publications

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“…In our works [16,[34][35][36][37][38], we have used this fact to propose the so-called "dark disk model" for description the positron anomaly in AMS-02 data. We consider the Dark Matter to consist of two components.…”

Section: Dark Disk Modelmentioning

confidence: 99%

Indirect effects of dark matter

Belotskiy

Esipova

Kamaletdinov

et al. 2019

Int. J. Mod. Phys. D

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Here we briefly review possible indirect effects of dark matter (DM) of the Universe. It includes effects in cosmic rays (CR): first of all, the positron excess at ∼ 500 GeV and possible electron-positron excess at 1-1.5 TeV. We tell that the main and least model-dependent constraint on such possible interpretation of CR effects goes from gamma-ray background. Even ordinary e + e − mode of DM decay or annihilation produces prompt photons (FSR) so much that it leads to contradiction with data on cosmic gamma-rays. We present our attempts to possibly avoid gamma-ray constraint. They concern peculiarities of both space distribution of DM and their physics. The latter involves complications of decay/annihilation modes of DM, modifications of Lagrangian of DM-ordinary matter interaction, and inclusion of mode with identical fermions in final state. In this way, no possibilities to suppress were found yet except, possibly, mode with identical fermions. While the case of spatial distribution variation allows achieving consistency between different data. Also we consider stable form of dark matter which can interact with baryons. We show which constraint such DM candidate can get from damping effect in plasma during large scale structure formation in comparison with other existing constraints.

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Section: Dark Disk Modelmentioning

confidence: 99%

Indirect effects of dark matter

Belotskiy

Esipova

Kamaletdinov

et al. 2019

Int. J. Mod. Phys. D

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“…As we mentioned above, one can try to suppress photon yield due to the interaction Lagrangian of DM particles. Earlier we have shown [9] that the parametrization of the simplest interaction vertices like (3) and (4) does not suppress the photon yield during decays of vector and scalar DM particles into e + e − .…”

Section: On the Suppression Due To Dm/sm Interaction Lagrangianmentioning

confidence: 94%

“…The physical nature of DM still is unknown and it s obviously connected with physics beyond the Standard Model (SM) Many DM search attempts, both direct in underground experiments and accelerator ones and indirect in cosmic ray (CR) experiments are undertaken. We continue our investigations in this field [1][2][3][4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Cosmic Gamma Ray Constraints on the Indirect Effects of Dark Matter

et al. 2020

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The observed anomalous excess of high-energy cosmic ray (CR) positrons is widely discussed as possible indirect evidence for dark matter (DM). However, any source of cosmic positrons is inevitably the source of gamma radiation. The least model dependent test of CR anomalies interpretation via DM particles decays (or annihilation) is connected with gamma-ray background due to gamma overproduction in such processes. In this work, we impose an observational constraint on gamma ray production from DM. Then, we study the possible suppression of gamma yield in the DM decays into identical final fermions. Such DM particles arise in the multi-component dark atom model. The influence of the interaction vertices on the gamma suppression was also considered. No essential gamma suppression effects are found. However, some minor ones are revealed.

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“…The physical task itself comes from our previous works [4][5][6][7][8][9][10][11][12][13][14] studying compatibility of DM interpretation of CR e + e − with cosmic gamma-ray data. The main problem is that, when we are trying to explain CR e + e − anomalies we start to contradict to cosmic gamma-ray data even in the framework of, seeming, minimal model case from viewpoint of gamma-ray production.…”

Section: Introductionmentioning

confidence: 99%

“…There are a few attempts to try to avoid this contradiction (we reviewed them in [5,11,12]), i.e. to suppress gamma coming from DM.…”

Section: Introductionmentioning

confidence: 99%

Analysis of programming tools in framework of dark matter physics and concept of new MC-generator

Belotsky,

Kamaletdinov,

Shlepkina

2019

Preprint

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We analyse here some programming tools (MC-generators) from viewpoint of their application to the tasks of dark matter (DM) interpretation of cosmic rays puzzles. We shortly describe our tasks, where the main goal is the solution of the problem of suppression of gamma-rays induced by the products of DM decay or annihilation in Galaxy. We show that existing MC-generators do not fully satisfy our task, comparing them, and suggest our own one.

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Analysis of a possible explanation of the positron anomaly in terms of dark matter

Cited by 6 publications

References 11 publications

Indirect effects of dark matter

Indirect effects of dark matter

Cosmic Gamma Ray Constraints on the Indirect Effects of Dark Matter

Analysis of programming tools in framework of dark matter physics and concept of new MC-generator

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