Hadron-hadron collisions at energy-frontier facilities, such as the Future Circular Collider (FCC-hh), aiming for center-of-mass energies of approximately 100 TeV, can prospectively yield a prolific flux of high-energy feebly interacting particles predominantly in the forward direction. This presents a nice opportunity for probing physics beyond the Standard Model (BSM). Far-forward...
The method of indirect detection of dark matter (DM) particles in neutrino tele- scopes involves the observation of Cherenkov signals left by their annihilation or decay products. An excess of neutrinos produced by these processes is searched in nearby astrophysical targets such as the Galactic Centre or the Sun, where large amounts of DM are believed to be accumulated. The KM3NeT infras-...
I will discuss our recent paper Phys.Rev.Lett. 132 (2024) 5, 051801, where we propose a generalized KSVZ-type axion framework in which coloured fermions and scalars act as two-loop Majorana neutrino-mass mediators. The global Peccei-Quinn symmetry under which exotic fermions are charged solves the strong CP problem. Within our general proposal, various setups can be distinguished by probing...
CRESST (Cryogenic Rare Event Search with Superconducting Thermometers) is a dark matter search that uses (mainly) scintillating crystals equipped with Transition Edge Sensors (TESs) operated as cryogenics calorimeters (temperature O(mK)). The experiment is located at the underground laboratory of Gran Sasso (LNGS) in Italy, and its objective is to directly search for dark matter in the sub-GeV...
Macroscopic Dark Matter (or Macros) are a general class of dark matter models with Planck-scale or larger masses and near geometric cross sections. Due to their very low number density, the range of macro cross sections is relatively unconstrained by conventional DM detectors, and instead require novel detection methods with high exposure. Here we consider the constraining power of proposed...
Sub-GeV dark matter (DM) has been gaining significant interest in recent years, since it can account for the thermal relic abundance while evading nuclear recoil direct detection constraints. However, sub-GeV DM is still subject to a number of constraints from laboratory experiments, and from astrophysical and cosmological observations. In this work, we compare these observations with the...
Ultra-light axions with weak couplings to photons are motivated extensions of the Standard Model. We perform one of the most sensitive searches to-date for the existence of these particles with the NuSTAR telescope by searching for axion production in stars in the M82 starburst galaxy and the M87 central galaxy of the Virgo cluster. This involves a sum over the full stellar populations in...
Axion-Like Particles (ALPs) are pseudo-scalar bosons that generalize the concept of QCD Axion and arise from models Beyond the Standard Model (BSM). Under certain conditions ALPs can mix with photons in regions with magnetic fields. Photons from very high energy (VHE) galactic sources can mix with ALPs, which would produce an attenuation in the spectrum of the source. In this work we study the...
Exploring the interplay of different baryons and the quark matter, we emphasize the effects of a slow phase transition at the hadron-quark interface. We observe that the maximum mass is attained before the fundamental mode's frequency diminishes for slow phase transitions. This observation implies the stability of stellar configurations with higher central densities than the maximum mass,...
In this talk I will describe the minimal 2HDM with U(1) flavour symmetries which accounts for the observed pattern of quark and lepton masses and mixings. The corresponding phenomenology related to flavour processes in both sectors will also be investigated, as well as the constraints imposed in the parameter space.
The axion is a type of pseudoscalar (spin-0, odd parity) particle initially proposed as a solution to strong CP problem as well as being a theoretically well-motivated dark matter candidate. One part of the Quantum enhanced Particle Astrophysics (QuEPA) project at Imperial College focuses on developing a Fabry-Perot cavity as a dark matter haloscope to convert axions in the 125-250 μeV mass...
The CRESST experiment uses Transition Edge Sensors as super-sensitive cryogenic thermometers to measure a temperature variation in a target crystal as a result of the interaction of dark matter particles within it. The stability and the performance of these superconducting sensors is strongly affected by changes in the external magnetic fields. In this talk, I will talk about a first attempt...
