In this overview talk I will try not to bore the surely already expert audience with some basic facts about Dark Matter, including evidences, candidates and searches, in order to set the tone for the more technical discussions that will follow.
In this talk I will present the FRIedmann Solver for Black Hole Evaporation in the Early-universe ([FRISBHEE][1]). This tool is used to calculate the phenomenological effects of having a distribution of light primordial black holes in an expanding Universe. The tool can calculate observables assuming just the Standard Model particle content or extensions. Evaporating black holes are expected...
Practical guidance will be given on how to implement and explore BSM dark matter models using LanHEP and CalcHEP.
Part I covers LanHEP, a tool for automatically generating Feynman rules from a Lagrangian. You'll learn how to produce model files in CalcHEP, CompHEP, and UFO formats, with a focus on CalcHEP output for use in micrOMEGAs. Examples will include the Inert Doublet Model and...
DarkPACK is a new program dedicated to the computation of the dark matter relic density in a user-defined model. Written in C++, DarkPACK is designed to be modular, efficient, and user-friendly. It relies on MARTY to build the model; and it aims to simplify as much as possible the steps from the Lagrangian density to the computation of dark matter observables. In this workshop, we shall show...
We present the C++ program RelExt for Standard Model (SM) extensions that feature a Dark Matter (DM) candidate. The tool allows to efficiently scan the parameter spaces of these models to find parameter combinations that lead to relic density values which are compatible with the measured value within the uncertainty specified by the user. The code computes the relic density for freeze-out...
The traditional tools to calculate the relic abundance of dark matter (DM) typically solve the Boltzmann equation at an integrated level---reducing the evolution of the phase space density to that of the number density---and in doing so are crucially reliant upon the assumption of chemical decoupling of DM preceding its kinetic decoupling from the Standard Model heat bath. However, this...
Despite robust cosmological and astrophysical evidence for the existence of non-baryonic Dark Matter (DM), its microscopic nature remains a mystery. Among the several possible scenarios, light DM candidates thermally produced in the early Universe are especially interesting, as they are both theoretically motivated and experimentally accessible. In this context, inelastic dark matter (iDM)...
In this talk I will address the theoretical aspects related to direct dark matter detection. I will review the different DM signatures, the main challenges for the (near) future, and tackle issues such as parameter reconstruction, the associated uncertainties and strategies to identify the dark matter.
The fundamental nature of dark or invisible matter remains one of the great mysteries of our time. A leading hypothesis is that dark matter is made of new elementary particles, with proposed masses and interaction cross sections spanning an enormous range. Among these, particles with masses in the MeV-TeV range could be directly observed via scatters with atomic nuclei or electrons in...
Annihilation or decay of Dark Matter (DM) can produce Standard Model particles, and in particular photons, which can be searched for in suitable astrophysical environments and reveal the, still unknown, DM properties.
I will review the current status of DM indirect searches with cosmic radiation, from radio to gamma-rays, with a focus on the latter, discussing the most promising targets and...
Weak-scale Dark Matter (DM) particles annihilating into lepton-rich channels in the Galaxy not only produce $\gamma$-rays via prompt radiation, but also generate abundant energetic $e^\pm$, which subsequently emit through inverse Compton scattering or bremsstrahlung (collectively called `secondary-radiation photons'). While the prompt $\gamma$-rays concentrate at high-energy, the secondary...
The Andromeda galaxy (M31) is a promising target for the indirect search of dark matter (DM) due to its proximity and expected massive DM halo. It functions as test case for a Milky Way (MW) like galaxy as the isotropic emission from the MW halo itself cannot be detected with a coded mask telescope like INTEGRAL/SPI. MeV data can put strong limits on DM models from the MeV up to the TeV mass...
Minimal Flavor Violation (MFV) offers an appealing framework for exploring physics beyond the Standard Model. Interestingly, within the MFV framework, a new colorless field that transforms non-trivially under a global SU(3)3 quark flavor group can naturally be stable. Such a new field is thus a promising dark matter candidate, provided it is electrically neutral. We extend the MFV framework...
In this talk I will review searches for dark matter and other dark sector particles both at the energy frontier (using hadron colliders) and at the intensity frontier (using electron-positron colliders and beam-dump experiments). The focus will be on recent developments regarding model-building (strongly-interacting dark sectors, dark sectors with long-lived excited states or...
Cosmic antideuterons offer a unique window for dark matter searches, but their prediction still suffers from uncertainties in coalescence models. A recent Wigner-function-based approach using the Argonne v₁₈ wavefunction has greatly improved the modeling of antideuteron production from dark matter annihilation and decay. In this talk, we introduce a new project, still at an early stage,...
The nature of dark matter remains unknown. In the particle hypothesis, the detection of antinuclei by space-borne experiments near Earth has been identified as a potential smoking gun for dark matter signals. Due to their astrophysical background being highly suppressed for kinetic energies below 1 GeV/c, antinuclei represent an attractive search channel. Recently, theoretical efforts have...
In this talk, we present a tuning of PYTHIA and a coalescence model that leads to realistic predictions of antinuclei production. This tuning is validated against LEP data including the fragmentation function of $b$-quarks into into $b$-hadrons, which is crucial for determining the $\bar{\Lambda}_b^0$ multiplicity. The coalescence model is tuned to ALICE data for the $\overline{\text{D}}$ and...
Light primordial black holes (PBHs) may have originated in the early Universe, and could contribute to the dark matter in the Universe.
Their Hawking evaporation into particles could eventually lead to the production of antinuclei, which
propagate and arrive at Earth as cosmic rays with a flux peaked at GeV energies.
We revisit here the antiproton and antideuteron signatures from PBH...
The formation mechanism of light (anti)nuclei in high-energy hadronic collisions remains an open question that is being actively investigated both from theoretical and experimental perspectives. In particular, the (anti)nuclei production at particle accelerator provides a fundamental input to constrain the flux of antinuclei produced from cosmic ray interactions with the interstellar matter,...
Many Standard Model extensions feature a dark matter (DM) candidate produced via freeze-out, but often fail to account for the full relic density. We show that adding a second DM candidate via the freeze-in mechanism can resolve this issue. In such two-component DM models, the freeze-out particle may remain undetectable due to its low density, while a Feebly Interacting Massive Particle (FIMP)...
I will present the results for our computation of the next-to-leading-order QCD corrections to the annihilation process of two dark matter particles into a W boson, a massless quark and a massless antiquark. This process contributes to the computation of the dark matter relic density. The calculation has been performed within the framework of the complex singlet extension of the Standard Model...
The discovery of the Higgs boson at the LHC confirms the Standard Model’s (SM) mechanism for electroweak symmetry breaking, yet the SM fails to address key cosmological phenomena such as dark matter (DM) and the matter-antimatter asymmetry. Higgs-portal models with extended scalar sectors offer promising frameworks to bridge this gap. Among them, models incorporating a complex singlet scalar...
If dark matter is blind to standard model gauge interactions, the dark sector might not be totally secluded but connect to the visible sector via the introduction of portal interactions. In this talk, I will discuss a novel scenario where an axion-like particle acts as mediator between the SM and a complex scalar singlet dark matter candidate. The identification of physical couplings crucially...
Axion-like particles (ALPs) are compelling dark matter candidates, particularly in the "ultralight mass regime." In this talk, I will discuss the theoretical framework for ALP interactions with Standard Model fields, emphasising the renormalization group (RG) running and low-energy matching in quantum field theory. Many quantum sensor experiments are designed to probe very light ALPs, which...
With their large exposures from the heaven, celestial objects serve as natural dark matter detectors. For leptophilic dark matter, interactions with electrons inside these objects can lead to energy loss, allowing dark matter to become gravitationally bound. Using the Sun and observations by Super-Kamiokande, we set world-leading constraints on the dark matter–electron scattering cross section...
