Scalar dark matter explanation of the DAMPE data in the minimal left-right symmetric model

Cao, Junjie; Guo, Xiaofei; Shang, Liangliang; Wang, Fei; Wu, Peiwen; Zu, Lei

doi:10.1103/physrevd.97.063016

Cited by 15 publications

(4 citation statements)

References 132 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is notable that in the energy region below 300 GeV, the CALET spectrum is consistent with the AMS-02, Fermi-LAT, and DAMPE data, while in the energy range 300 GeV to 1 TeV the CALET results exhibit a lower ux than the spectra from the latter two experiments [7]. While the DAMPE excess could be a statistical uctuation [8], there has been extensive discussion on the possible theoretical and experimental explanation of the DAMPE excess of both astrophysical origin [9] or dark matter (DM) origin [10]. The monoenergetic electron of energy 1.4 TeV implies local sources of electrons-positrons, because TeV electrons can only travel a small distance (kpc) in the Milky Way due to the strong radiative cooling of high energy CR electrons.…”

Section: Introductionsupporting

confidence: 63%

DAMPE excess from leptophilic vector dark matter: a model-independent approach

Ayazi¹,

Mohamadnejad²

2020

J. Phys. G: Nucl. Part. Phys.

View full text Add to dashboard Cite

We study all extensions of the standard model (SM) with a vector dark matter (VDM) candidate which can explain the peak structure observed recently by the DAMPE experiment in the electron–positron cosmic ray spectrum. In this regard, we consider all leptophilic renormalizable VDM-SM interactions through scalar, spinor, and vector mediators. We show that only two out of six possible models could produce a DAMPE signal by annihilation of VDM with a mass of about 1.5 TeV in a nearby subhalo, whilst simultaneously satisfying the constraints from DM relic density, direct/indirect detection, and the collider bounds. These two models have a scalar/pseudoscalar mediator ϕ with Mϕ ∈ [1500, 3000] GeV.

show abstract

Section: Introductionsupporting

confidence: 63%

DAMPE excess from leptophilic vector dark matter: a model-independent approach

Ayazi¹,

Mohamadnejad²

2020

J. Phys. G: Nucl. Part. Phys.

View full text Add to dashboard Cite

show abstract

“…The most attention is devoted to misaligned datapoint at energy of around 1.5 TeV. Despite the deviation less than 3σ [17], it is often considered as a small line-like signal from DM [18][19][20][21][22]. However, there are also plenty of works considering the broad excess over the background flux, and it is often viewed as DM signal too (see [23] for references).…”

Section: Possible Electron-positron Excess Registered By Dampementioning

confidence: 99%

Indirect effects of dark matter

Belotskiy

Esipova

Kamaletdinov

et al. 2019

Int. J. Mod. Phys. D

View full text Add to dashboard Cite

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.

show abstract

“…During the past decade, the anomalous behaviour of CR energy spectra was brought into the light. The positron excess, found by PAMELA [1] and confirmed by AMS-02 [2,3], the wide and peaklike excesses in electron plus positron spectrum of recent DAMPE experiment [4,5] are amongst the most well-known ones. The simple solutions seem to not work for these puzzles, as they remain unsolved.…”

Section: Introductionmentioning

confidence: 84%

The "Dark disk" model in the light of DAMPE experiment

Solovyov¹,

Rakhimova²,

Belotsky³

2020

Preprint

View full text Add to dashboard Cite

There are a lot of models considering the Dark Matter (DM) to be the origin of cosmic ray (CR) positron excess. However, they face an obstacle in the form of gamma-rays. Simple DM models tend to overproduce gamma-rays, leading to contradiction with isotropic gamma-ray background (IGRB). The dark disk model has been proposed to alleviate this contradiction. This work considers results of DAMPE experiment in the framework of the disk model. It is obtained that such a framework allows improving data fit considerably.

show abstract

Scalar dark matter explanation of the DAMPE data in the minimal left-right symmetric model

Cited by 15 publications

References 132 publications

DAMPE excess from leptophilic vector dark matter: a model-independent approach

DAMPE excess from leptophilic vector dark matter: a model-independent approach

Indirect effects of dark matter

The "Dark disk" model in the light of DAMPE experiment

Contact Info

Product

Resources

About