The spectrum of darkonium in the Sun

Kouvaris, Chris; Langæble, Kasper; Nielsen, Niklas Grønlund

doi:10.1088/1475-7516/2016/10/012

Cited by 32 publications

(32 citation statements)

References 69 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…10 It agrees perfectly, including the sign of the non-Abelian term. 11 Similarly to before, we may now derive the full interaction potential in position space. Starting from eq.…”

Section: The Non-relativistic Hamiltonian From Effective Field Theorymentioning

confidence: 99%

“…[73] is defined as k "´pq´pq. 11 The effective Lagrangian is invariant under ultrasoft gauge transformations [47,79]. 12 For comparison with eq.…”

Section: The Milne Relationmentioning

confidence: 99%

“…It has been shown that the formation and decay of unstable bound states can affect the density of thermal-relic DM [4], and is essential in determining the unitarity limit on the DM mass [5]. Moreover, boundstate formation (BSF) processes enhance the expected annihilation signals of symmetric [1,[6][7][8][9][10][11] and asymmetric DM [5,12]. Since BSF cross-sections are typically dominated by different partial waves than the direct annihilation processes, they exhibit different velocity dependence and resonance structure, and can give rise to complementary signatures [7,9].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Radiative bound-state formation in unbroken perturbative non-Abelian theories and implications for dark matter

Harz

Petraki

2018

J. High Energ. Phys.

144

View full text Add to dashboard Cite

We compute the cross-sections for the radiative capture of non-relativistic particles into bound states, in unbroken perturbative non-Abelian theories. We find that the formation of bound states via emission of a gauge boson can be significant for a variety of dark matter models that feature non-Abelian long-range interactions, including multi-TeV scale WIMPs, dark matter co-annihilating with coloured partners and hidden-sector models. Our results disagree with previous computations, on the relative sign of the Abelian and non-Abelian contributions. In particular, in the case of capture of a particle-antiparticle pair into its tightest bound state, we find that these contributions add up, rather than partially canceling each other. We apply our results to dark matter co-annihilating with particles transforming in the (anti)fundamental of SU p3q c , as is the case in degenerate stop-neutralino scenarios in the MSSM. We show that the radiative formation and decay of particle-antiparticle bound states can deplete the dark matter density by p40´240q%, for dark matter heavier than 500 GeV. This implies a larger mass difference between the co-annihilating particles, and allows for the dark matter to be as heavy as 3.3 TeV.ArXiv ePrint: 1805.01200

show abstract

“…10 It agrees perfectly, including the sign of the non-Abelian term. 11 Similarly to before, we may now derive the full interaction potential in position space. Starting from eq.…”

Section: The Non-relativistic Hamiltonian From Effective Field Theorymentioning

confidence: 99%

“…[73] is defined as k "´pq´pq. 11 The effective Lagrangian is invariant under ultrasoft gauge transformations [47,79]. 12 For comparison with eq.…”

Section: The Milne Relationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Radiative bound-state formation in unbroken perturbative non-Abelian theories and implications for dark matter

Harz

Petraki

2018

J. High Energ. Phys.

144

View full text Add to dashboard Cite

show abstract

“…A specific realisation of the long-lived mediator scenario in the context of DM models is the dark photon model [26,[36][37][38]. In these models, DM particles can be collected at the centre of the Earth/Sun or stars [39] where they can annihilate into dark photon pairs.…”

Section: Introductionmentioning

confidence: 99%

Neutrinos and gamma rays from long-lived mediator decays in the Sun

Niblaeus

Beniwal

Edsjö

2019

J. Cosmol. Astropart. Phys.

View full text Add to dashboard Cite

We investigate a scenario where dark matter (DM) particles can be captured and accumulate in the Sun, and subsequently annihilate into a pair of long-lived mediators. These mediators can decay further out in the Sun or outside of the Sun. Compared to the standard scenario where DM particles annihilate directly into Standard Model particles close to the solar core, here we also obtain fluxes of gamma rays and charged cosmic rays. We simulate this scenario using a full three-dimensional model of the Sun, and include interactions and neutrino oscillations. In particular, we perform a model-independent study of the complementarity between neutrino and gamma ray fluxes by comparing the recent searches from IceCube, Super-Kamiokande, Fermi-LAT, ARGO and HAWC.We find that the resulting neutrino fluxes are significantly higher at high energy when the mediators decay further out in the Sun. We also find that gamma ray searches place stronger constraints than neutrino searches on these models even in cases where the mediators decay mainly inside the Sun, except in the approximately inner 10% of the Sun where neutrino searches are more powerful. We present our results in a model-independent manner and release a new version of the WimpSim code that can be used to simulate this scenario for arbitrary mediator models.

show abstract

“…More recently, it has been realised that the cosmological and astrophysical formation of DM bound states is a generic implication of theories with light mediators. The formation and subsequent decay of unstable bound states can deplete the DM density [5], and contribute to the DM indirect detection signals [6][7][8][9][10][11][12][13][14][15]. The formation of stable bound states may quell the DM self-scattering inside haloes [16], and give rise to novel radiative [17][18][19][20] and direct detection signatures [21,22].…”

Section: Introductionmentioning

confidence: 99%

Dark matter bound states via emission of scalar mediators

Oncala

Petraki

2019

J. High Energ. Phys.

View full text Add to dashboard Cite

If dark matter (DM) couples to a force carrier that is much lighter than itself, then it may form bound states in the early universe and inside haloes. While bound-state formation via vector emission is known to be efficient and have a variety of phenomenological implications, the capture via scalar emission typically requires larger couplings and is relevant to more limited parameter space, due to cancellations in the radiative amplitude. However, this result takes into account only the trilinear DM-DM-mediator coupling. Theories with scalar mediators include also a scalar potential, whose couplings may participate in the radiative transitions. We compute the contributions of these couplings to the radiative capture, and determine the parameter space in which they are important.ArXiv ePrint: 1808.04854

show abstract

The spectrum of darkonium in the Sun

Cited by 32 publications

References 69 publications

Radiative bound-state formation in unbroken perturbative non-Abelian theories and implications for dark matter

Radiative bound-state formation in unbroken perturbative non-Abelian theories and implications for dark matter

Neutrinos and gamma rays from long-lived mediator decays in the Sun

Dark matter bound states via emission of scalar mediators

Contact Info

Product

Resources

About