Complex Dark Sectors and Large Bound States of Dark Matter

2019 ◽  
pp. 161-165
Author(s):  
Kathryn M. Zurek
Keyword(s):  
Dark Matter ◽  
Bound States

scholarly journals A balance for dark matter bound states

2017 ◽  
Vol 91 ◽  
pp. 22-33 ◽  
Author(s):  
F. Nozzoli
Keyword(s):  
Dark Matter ◽  
Bound States

scholarly journals Indirect searches for dark matter bound state formation and level transitions

2020 ◽  
Vol 9 (5) ◽  
Author(s):  
Iason Baldes ◽  
Francesca Calore ◽  
Kalliopi Petraki ◽  
Vincent Poireau ◽  
Nicholas L. Rodd
Keyword(s):  
Dark Matter ◽  
State Formation ◽  
Bound States ◽  
Bound State ◽  
Photon Mass ◽  
Dark Photon ◽  
Dissipation Of Energy ◽  
Light Force

Indirect searches for dark matter (DM) have conventionally been applied to the products of DM annihilation or decay. If DM couples to light force carriers, however, it can be captured into bound states via dissipation of energy that may yield detectable signals. We extend the indirect searches to DM bound state formation and transitions between bound levels, and constrain the emission of unstable dark photons. Our results significantly refine the predicted signal flux that could be observed in experiments. As a concrete example, we use Fermi-LAT dwarf spheroidal observations to obtain constraints in terms of the dark photon mass and energy which we use to search for the formation of stable or unstable bound states.

scholarly journals Collider signatures of coannihilating dark matter in light of the B-physics anomalies

2021 ◽  
Vol 2021 (11) ◽  
Author(s):  
Michael J. Baker ◽  
Darius A. Faroughy ◽  
Sokratis Trifinopoulos
Keyword(s):  
Dark Matter ◽  
Standard Model ◽  
Bound States ◽  
B Physics ◽  
Search Strategy ◽  
Dark Matter Candidate ◽  
Final States ◽  
Dark Sector ◽  
Decay Modes ◽  
The Standard Model

Abstract Motivated by UV explanations of the B-physics anomalies, we study a dark sector containing a Majorana dark matter candidate and a coloured coannihilation partner, connected to the Standard Model predominantly via a U1 vector leptoquark. A TeV scale U1 leptoquark, which couples mostly to third generation fermions, is the only successful single-mediator description of the B-physics anomalies. After calculating the dark matter relic surface, we focus on the most promising experimental avenue: LHC searches for the coloured coannihilation partner. We find that the coloured partner hadronizes and forms meson-like bound states leading to resonant signatures at colliders reminiscent of the quarkonia decay modes in the Standard Model. By recasting existing dilepton and monojet searches we exclude coannihilation partner masses less than 280 GeV and 400 GeV, respectively. Since other existing collider searches do not significantly probe the parameter space, we propose a new dedicated search strategy for pair production of the coloured partner decaying into bbττ final states and dark matter particles. This search is expected to probe the model up to dark matter masses around 600 GeV with current luminosity.

scholarly journals Dark Matter as dark dwarfs and other macroscopic objects: multiverse relics?

2021 ◽  
Vol 2021 (9) ◽  
Author(s):  
Christian Gross ◽  
Giacomo Landini ◽  
Alessandro Strumia ◽  
Daniele Teresi
Keyword(s):  
Phase Transition ◽  
Dark Matter ◽  
Bound States ◽  
Primordial Black Holes ◽  
False Vacuum ◽  
First Order ◽  
First Order Phase Transition ◽  
Macroscopic Objects ◽  
Chandrasekhar Limit ◽  
First Order Phase

Abstract First order phase transitions can leave relic pockets of false vacua and their particles, that manifest as macroscopic Dark Matter. We compute one predictive model: a gauge theory with a dark quark relic heavier than the confinement scale. During the first order phase transition to confinement, dark quarks remain in the false vacuum and get compressed, forming Fermi balls that can undergo gravitational collapse to stable dark dwarfs (bound states analogous to white dwarfs) near the Chandrasekhar limit, or primordial black holes.

scholarly journals COMPOSITE WEAK BOSONS AND DARK MATTER

2013 ◽  
Vol 28 (23) ◽  
pp. 1350106
Author(s):  
HARALD FRITZSCH
Keyword(s):  
Dark Matter ◽  
Gauge Group ◽  
Bound States ◽  
The Universe

The weak bosons are bound states of two fermions and their antiparticles, denoted as haplons. The confinement scale of the associated gauge group SU(2) is of the order of 0.3 TeV. Besides the weak bosons, there also exist new bosons, an SU(2)-triplet and a singlet, with a mass of the order of 0.5 TeV. The neutral singlet boson is stable and provides the dark matter in the universe.

scholarly journals Direct detection of dark matter in universal bound states

2014 ◽  
Vol 89 (10) ◽  
Author(s):  
Ranjan Laha ◽  
Eric Braaten
Keyword(s):  
Dark Matter ◽  
Bound States ◽  
Direct Detection ◽  
Universal Bound

scholarly journals Milli-Interacting Dark Matter Interpretation of the Direct-Search Experiments

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Quentin Wallemacq
Keyword(s):  
Dark Matter ◽  
Active Medium ◽  
Parameter Space ◽  
Bound States ◽  
Radiative Capture ◽  
Direct Search ◽  
Positive Results

We reinterpret the results of the direct searches for dark matter in terms of milli-interacting dark particles. The model reproduces the positive results from DAMA/LIBRA and CoGeNT and is consistent with the absence of signal in the XENON100, CDMS-II/Ge, and LUX detectors. Dark atoms, interacting with standard atoms through a kinetic mixing between photons and dark photons and a mass mixing ofσmesons with dark scalars, diffuse elastically in terrestrial matter where they deposit all their energy. Reaching underground detectors through gravity at thermal energies, they form bound states with nuclei of the active medium by radiative capture, which causes the emission of photons that produce the observed signals. The parameter space of the model is explored and regions reproducing the results at the 2σlevel are obtained for each experiment.

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