Corpus ID: 226237372

New Pathways to the Relic Abundance of Vector-Portal Dark Matter.

  title={New Pathways to the Relic Abundance of Vector-Portal Dark Matter.},
  author={Patrick J. Fitzpatrick and Hongwang Liu and Tracy R. Slatyer and Yuhsin Tsai},
  journal={arXiv: High Energy Physics - Phenomenology},
We fully explore the thermal freezeout histories of a vector-portal dark matter model, in the region of parameter space in which the ratio of masses of the dark photon $A^{\prime}$ and dark matter $\chi$ is in the range $1 \lesssim m_{A^{\prime}}/m_{\chi} \lesssim 2$. In this region $2 \rightarrow 2$ and $3 \rightarrow 2$ annihilation processes within the dark sector, as well as processes that transfer energy between the dark sector and the Standard Model, play important roles in controlling… Expand
Dark Matter Freeze-Out via Catalyzed Annihilation.
A new paradigm of dark matter freeze-out is presented, where the annihilation of dark Matter particles is catalyzed, and the dark matter number density is depleted polynomially rather than exponentially (Boltzmann suppression) as in classical weakly interacting massive particles and strongly interactingmassive particles. Expand
Pandemic Dark Matter
Torsten Bringmann, ∗ Paul Frederik Depta, † Marco Hufnagel, ‡ Joshua T. Ruderman, 2, 5, § and Kai Schmidt-Hoberg ¶ Department of Physics, University of Oslo, Box 1048, N-0316 Oslo, Norway DeutschesExpand
Manifesting hidden dynamics of a sub-component dark matter
Ayuki Kamada, 2, 3, ∗ Hee Jung Kim, 4, † Jong-Chul Park, ‡ and Seodong Shin 6, § Center for Theoretical Physics of the Universe, Institute for Basic Science (IBS), Daejeon 34126, Republic of KoreaExpand
Dark matter transient annihilations in the early Universe
Katsuya Hashino, ∗ Jia Liu, 1, † Xiao-Ping Wang, 4, ‡ and Ke-Pan Xie § Center for High Energy Physics, Peking University, Beijing 100871, China School of Physics and State Key Laboratory of NuclearExpand
Dark matter freeze-in from semi-production
We study a novel dark matter production mechanism based on the freeze-in through semi-production, i.e. the inverse semi-annihilation processes. A peculiar feature of this scenario is that theExpand
Dark matter relic abundance beyond kinetic equilibrium
We introduce , a numerical precision tool for predicting the dark matter relic abundance also in situations where the standard assumption of kinetic equilibrium during the freeze-out process may notExpand
When freeze-out occurs due to a non-Boltzmann suppression: a study of degenerate dark sector
Exponential suppression or commonly known as the Boltzmann suppression in the number density of dark matter is the key ingredient for creating chemical imbalance prior to the usual thermalExpand


Enabling forbidden dark matter
The thermal relic density of dark matter is conventionally set by two-body annihilations. We point out that in many simple models, $3 \to 2$ annihilations can play an important role in determiningExpand
Refined bounds on MeV-scale thermal dark sectors from BBN and the CMB
New light states thermally coupled to the Standard Model plasma alter the expansion history of the Universe and impact the synthesis of the primordial light elements. In this work, we carry out anExpand
Dark Matter's secret liaisons: phenomenology of a dark U(1) sector with bound states
Dark matter (DM) charged under a dark U(1) force appears in many extensions of the Standard Model, and has been invoked to explain anomalies in cosmic-ray data, as well as a self-interacting DMExpand
The High-Energy Frontier of the Intensity Frontier: Closing the Dark Photon, Inelastic Dark Matter, and Muon g-2 Windows.
We study hidden sector and long-lived particles at past (CHARM and NuCal), present (NA62 and SeaQuest/DarkQuest), and future (LongQuest) experiments that are at the high-energy frontier of theExpand
Mechanism for thermal relic dark matter of strongly interacting massive particles.
A new paradigm for achieving thermal relic dark matter is presented and 3→2 annihilations typically predict sizable 2→2 self-interactions which naturally address the "core versus cusp" and "too-big-to-fail" small-scale structure formation problems. Expand
Indirect dark matter signatures in the cosmic dark ages. I. Generalizing the bound on s-wave dark matter annihilation from Planck results
Recent measurements of the cosmic microwave background (CMB) anisotropies by Planck provide a sensitive probe of dark matter annihilation during the cosmic dark ages, and specifically constrain theExpand
Phases of cannibal dark matter
A bstractA hidden sector with a mass gap undergoes an epoch of cannibalism if number changing interactions are active when the temperature drops below the mass of the lightest hidden particle. DuringExpand
Three exceptions in the calculation of relic abundances.
  • Griest, Seckel
  • Physics, Medicine
  • Physical review. D, Particles and fields
  • 1991
Proper treatment of the thermal averaging and the annihilation after freeze-out shows that the dip in relic abundance caused by a pole is not nearly as sharp or deep as previously thought. Expand
Looking for the WIMP next door
A bstractWe comprehensively study experimental constraints and prospects for a class of minimal hidden sector dark matter (DM) models, highlighting how the cosmological history of these modelsExpand
Consistent scenarios for cosmic-ray excesses from Sommerfeld-enhanced dark matter annihilation
Anomalies in direct and indirect detection have motivated models of dark matter consisting of a multiplet of nearly-degenerate states, coupled by a new GeV-scale interaction. We perform a carefulExpand