A scenario of heavy but visible baryonic dark matter

Abstract

We consider a model in which dark matter is a composite baryon of a dark sector governed by $SU(3)$ gauge theory, with vector-like quarks also charged under $U(1{)}_Y$. The model provides simple answer to the dark matter stability problem: it is a result of the accidental dark baryon number conservation. And with an analogy to QCD, all physical quantities of the dark matter can be calculated by rescaling the QCD experimental results. According to the thermal freeze-out mechanism the mass of the dark matter is predicted to be $\mathcal{O}(100)$~TeV in order to achieve a correct relic abundance. Such heavy dark matter is in general hard for detection due to small dark matter number density in the universe. However, dark baryon number in our model is not necessarily strictly preserved thanks to operators suppressed by the Planck scale, and such decay operator results in a decay lifetime marginal to the current detection bound. We show our model with $\mathcal{O}(10^{27})s$ dark matter decay life time can explain the AMS-02 anti-proton data, if it is experimentally interpreted as an access, although some theoretical uncertainty may weaken its significance. We also investigate other phenomena of this model such as the extragalactic gamma ray and neutrino signatures.

14 pages, 43 figures, published in JHEP

References in corpus (8)

• Atmospheric and Astrophysical Neutrinos above 1 TeV Interacting in IceCube
• Dark Matter from new Technicolor Theories
• Limits on Dark Matter Annihilation Signals from the Fermi LAT 4-year Measurement of the Isotropic Gamma-Ray Background
• Dynamical generation of the weak and Dark Matter scales from strong interactions
• Constraints on decaying dark matter from the extragalactic gamma-ray background
• AMS-02 Antiprotons Reloaded
• Particle dark matter searches outside the Local Group
• On the sensitivity of CTA to gamma-ray boxes from multi-TeV dark matter

Cited by in corpus (13)

• Improved lattice computation of proton decay matrix elements
• Dark Matter as a weakly coupled Dark Baryon
• Light Fermionic WIMP Dark Matter with Light Scalar Mediator
• New physics of strong interaction and Dark Universe
• Hadronic and hadron-like physics of Dark Matter
• Dynamical Clockwork Axions
• Dark Matter and Naturalness
• Large $N$-ightmare Dark Matter
• The Realistic Scattering of Puffy Dark Matter
• Oscillating Composite Asymmetric Dark Matter
• Search for a light Higgs boson in single-photon decays of ${\rm Y}(1S)$ using ${\rm Y}(2S)\to {\pi }^{+}{\pi }^{-}{\rm Y}(1S)$ tagging method
• Charms of Strongly Interacting Conformal Gauge Mediation
• Main properties of new heavy hadrons and the luminosity of hadronic dark matter