ISAPP 2024: Particle Candidates for Dark Matter

Session

Flash Talks by Students

26 Jun 2024, 17:30

Aula Magna (Scuola Galileiana di Studi Superiori (SGGS))

33. BSM Physics Opportunities with Far-Forward Experiments at a 100 TeV Proton Collider

Jyotismita Adhikary (National Centre for Nuclear research, Poland)

26/06/2024, 17:30

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...

34. Sensitivities for DM search in the Galactic Center with KM3NeT/ORCA-6

Adriana Bariego Quintana (CSIC-UV)

26/06/2024, 17:40

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-...

35. Axion paradigm with "coloured" neutrino masses

Aditya Batra (CFTP-IST, Lisbon)

26/06/2024, 17:50

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...

36. Introduction to the CRESST experiment

Eleonora Rebecca Cipelli (Max Planck Institut für Physik)

26/06/2024, 18:00

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...

37. Listening for ultra-heavy dark matter with underwater acoustic detectors

Damon Cleaver (King's College London)

26/06/2024, 18:10

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...

38. Global Fits of sub-GeV Dark Matter

Taylor Gray (Chalmers University)

26/06/2024, 18:20

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...

39. The Inner Dark Matter Distribution in Hydrodynamic Simulations

Abd El Aziz Hussein (MIT)

01/07/2024, 11:15

Understanding the dark matter distribution within a few kpc of the galactic center of the Milky Way is essential in estimating the dark matter content of the galaxy for indirect detection experiments, as well as understanding the particle nature of dark matter through the density profile in the Milky Way’s core. Although it is difficult to accurately measure the inner stellar distribution in...

40. Axion-Photon Sensitivity with NuSTAR Observations of M82 and M87

Orion Ning (University of California, Berkeley)

01/07/2024, 11:25

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...

41. ALPs searches on galactic sources using the HAWC Observatory

Alvaro Pratts (Instituto de Física, UNAM)

01/07/2024, 11:35

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...

42. Slow Stable Hybrid Stars

Ishfaq Ahmad Rather (Institute for Theoretical Physics, Goethe University, 60438 Frankfurt am Main, Germany)

01/07/2024, 11:45

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,...

43. Minimal U(1) two-Higgs-doublet models for quark and lepton flavour

José Rocha (CFTP-IST)

01/07/2024, 11:55

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.

44. A high Quality factor dielectric Fabry-Perot cavity for detecting dark matter axions

Jiacheng Shi (Physics department, Imperial College London)

01/07/2024, 12:05

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...

45. R&D of dark matter cryogenic detectors: study of impact of an aluminium layer as a shield against magnetic fields

Marco Zanirato (Max Planck Institut für Physik)

01/07/2024, 12:15

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...