PPPC 4 DM secondary: a Poor Particle Physicist Cookbook for secondary radiation from Dark Matter

Buch, Jatan; Cirelli, Marco; Giesen, Gaëlle; Taoso, Marco

doi:10.1088/1475-7516/2015/9/037

Cited by 48 publications

(72 citation statements)

References 97 publications

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“…We here discuss this aspect of our analysis. The production of gamma rays from Dark Matter decays has already been studied in various works (see, e.g., [72], [93] and, at lower energies, [94]). This production can be divided, as in the case of neutrinos, in a Galactic and an Extragalatic component.…”

Section: Gamma Rays From Decaying Dark Mattermentioning

confidence: 99%

Decaying dark matter at IceCube and its signature on High Energy gamma experiments

Chianese

Fiorillo

Miele

et al. 2019

J. Cosmol. Astropart. Phys.

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The origin of neutrino flux observed in IceCube is still mainly unknown. Typically two flux components are assumed, namely: atmospheric neutrinos and an unknown astrophysical term. In principle the latter could also contain a top-down contribution coming for example from decaying dark matter. In this case one should also expect prompt and secondary gamma's as well. This leads to the possibility of a multimessenger analysis based on the simultaneous comparison of the Dark Matter hypothesis both with neutrino and high energy gamma rays data. In this paper, we analyze, for different decaying Dark Matter channels, the 7.5 years IceCube HESE data, and compare the results with previous exclusion limits coming from Fermi data. Finally, we test whether the Dark Matter hypothesis could be further scrutinised by using forthcoming high energy gamma rays experiments. * m.chianese@uva.nl † dfgfiorillo@na.infn.it ‡ miele@na.infn.it § smorisi@na.infn.t ¶ a hard isotropic extragalactic neutrino flux and an additional softer one with a potential galactic origin [27][28][29][30][31][32][33]. This two-component hypothesis is at the same time supported by the first combined analysis of IceCube and ANTARES data [34]. It turns out that both IceCube and ANTARES telescopes have measured in the same energy range (about 40-200 TeV) a slight excess with respect to an astrophysical power-law flux deduced by TG data (γ ≤ 2.2), after the background subtraction [34][35][36][37].An alternative source for this diffuse UHE neutrino flux is decaying Dark Matter (DM) . While another available source might be identified with annihilating DM [33,35,39,[63][64][65][66][67], the unitarity limit leads in general to small neutrinos fluxes which are therefore not detectable. Bounds are available in previous studies both for decaying [68,69] and annihilating DM [70,71]. Analyses mainly devoted to the neutrino energy spectrum are able to distinguish among different DM decay channels. Moreover, different DM models are further constrained through the informations coming from gamma-ray observations. The current data (neutrinos and gamma-rays) show that hadronic final states are strongly disfavored or excluded, while leptonic ones are slightly disfavored or allowed [72]. The most favorable case is a heavy DM candidate coupled only to neutrinos.The foregoing observations have shown that gamma-rays constraints, mainly coming from observations of the Fermi-LAT experiment, have been critical in excluding or disfavoring various DM decay channels. It is therefore all the more interesting to find out whether gamma-rays experiments in different energy ranges would be able to put further constraints on the existence of decaying DM fluxes. While the lower energy range (up to few hundreds GeV) is mainly explored by Fermi LAT [73], the higher energy range (from about 100 TeV) is explored by air shower experiments [74] and has already been used in exploring constraints on annihilating or decaying Dark Matter through data by Pierre Auger [75], CASA-MIA [76] and KASCADE [77];...

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Section: Gamma Rays From Decaying Dark Mattermentioning

confidence: 99%

Decaying dark matter at IceCube and its signature on High Energy gamma experiments

Chianese

Fiorillo

Miele

et al. 2019

J. Cosmol. Astropart. Phys.

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“…An attempt to describe the energy loss function in the magnetic fields should take into account the contribution of all these processes. We can write an equation for electrons and positrons propagating in our galaxy as [11,32]…”

Section: -4 -mentioning

confidence: 99%

“…(3.4). For further details of such calculations we direct the reader to references [11,22,32]. We are interested in the synchrotron intensity presented in Eq.…”

Section: -4 -mentioning

confidence: 99%

“…where I syn (E s , ν, l, b) denotes the generalized synchrotron halo function, which definition can also be found at [11]. For practical purposes in order to reach the radio observations, we need to express the Eq.…”

Section: )mentioning

confidence: 99%

“…Other attempts to search for DM were performed by looking for the secondary γ-rays produced by DM annihilation and pion decay, as well as from processes such as internal bremsstrahlung [8,9] and synchrotron radiation [10]. The secondary radiation consists of three kinds: (1) radio waves due to synchrotron radiation of secondary electron-positron pairs (e ± ) interacting with the galactic magnetic field, (2) bremsstrahlung γ-rays, and (3) and γ-rays from Compton interactions with photons of interstellar radiation fields [11,12].There have been various studies of astrophysical γ-ray observations with the hope of finding γ-ray signals of dark matter annihilation. These studies included the galactic center region [13].…”

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confidence: 99%

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Some implications of the leptonic annihilation of dark matter: possible galactic radio emission signatures and the excess radio flux of extragalactic origin

Fortes

Miranda

Wuensche

2019

J. Cosmol. Astropart. Phys.

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We give theoretical predictions for the radio emission of a dark matter candidate annihilating into 2-lepton and 4-lepton final states. We then compare our results with the known radio measurements of the sky temperature as a function of the frequency. In particular, we calculate the radio emission for some dark matter candidates annihilating into intermediate bosons that subsequently decay into a 4-lepton channel with a thermal annihilation cross-section. We show that within the range of frequencies from 20 MHz to 5 GHz, this channel can produce a stronger signature than direct annihilation into leptons.A combination of cosmological and astrophysical observations dating back decades has provided strong evidence for the existence of dark matter (DM). This evidence includes data from rotational curves of galaxies, the dynamics of galaxy-galaxy interactions, spatial temperature fluctuations in the cosmic microwave background (CMB) radiation, and gravitational lensing. The luminous matter observed in spiral galaxies is not large enough by itself to account for the rotation curves of the galaxies (see, e.g.[1]). The CMB fluctuation results infer that DM component of the universe is Ω dm h 2 = 0.120 ± 0.001 while the baryonic component is Ω b h 2 = 0.0224 ± 0.0001 [2]. Observations of gravitational lensing phenomena also imply the presence of the DM, showing that evidence of a significant amount of mass where nothing is observed optically (see, e.g., [3,4]).We note that strong limits on the direct interaction of DM particles with standard model particles have been obtained in the laboratory [5]-[7]). Other attempts to search for DM were performed by looking for the secondary γ-rays produced by DM annihilation and pion decay, as well as from processes such as internal bremsstrahlung [8,9] and synchrotron radiation [10]. The secondary radiation consists of three kinds: (1) radio waves due to synchrotron radiation of secondary electron-positron pairs (e ± ) interacting with the galactic magnetic field, (2) bremsstrahlung γ-rays, and (3) and γ-rays from Compton interactions with photons of interstellar radiation fields [11,12].There have been various studies of astrophysical γ-ray observations with the hope of finding γ-ray signals of dark matter annihilation. These studies included the galactic center region [13]. However, the interpretation of the observed excess of γ-rays from the galactic center [14] is complicated by other possible contributions from sources such as millisecond pulsars. Studies of γ-ray emission from dwarf galaxies [15] and the nearby galaxies M31 and M33 [16] have lead to mass-dependent constraints on DM annihilation.The observed galactic radio spectrum used to estimate the galactic temperature is a result of several measurements. We particularly highlight the measurements performed at frequencies above 60 GHz by COBE/FIRAS instrument, some surveys at 22, 45, 408 and 1420 MHz [19] and the measurements of the balloon-borne experiment ARCADE-2, which has measured radio signals of the sky temperature...

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Lepton-flavor violating mediators

Galon

Kwa

Tañedo

2017

J. High Energ. Phys.

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We present a framework where dark matter interacts with the Standard Model through a light, spin-0 mediator that couples chirally to pairs of different-flavor leptons. This flavor violating final state weakens bounds on new physics coupled to leptons from terrestrial experiments and cosmic-ray measurements. As an example, we apply this framework to construct a model for the Fermi-LAT excess of GeV γ-rays from the galactic center. We comment on the viability of this portal for self-interacting dark matter explanations of small scale structure anomalies and embeddings in flavor models. Models of this type are shown to be compatible with the muon anomalous magnetic moment anomaly. We review current experimental constraints and identify possible future theoretical and experimental directions.

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PPPC 4 DM secondary: a Poor Particle Physicist Cookbook for secondary radiation from Dark Matter

Cited by 48 publications

References 97 publications

Decaying dark matter at IceCube and its signature on High Energy gamma experiments

Decaying dark matter at IceCube and its signature on High Energy gamma experiments

Some implications of the leptonic annihilation of dark matter: possible galactic radio emission signatures and the excess radio flux of extragalactic origin

Lepton-flavor violating mediators

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