Conveners
Dark Matter: Dark Matter
- Christian Ohm (KTH Royal Institute of Technology (SE))
- Martin Stahlberg (Max Planck Institute for Physics)
Dark Matter: Dark Matter
- Sara DIGLIO (SUBATECH/CNRS/In2p3)
- Irene Bolognino (The University of Adelaide)
Dark Matter: Dark Matter
- Martin Stahlberg (Max Planck Institute for Physics)
- Irene Bolognino (The University of Adelaide)
Dark Matter: Dark Matter
- Sara DIGLIO (SUBATECH/CNRS/In2p3)
- Marek Matas (Czech Technical University)
Dark Matter: Dark Matter
- Irene Bolognino (The University of Adelaide)
- Christian Ohm (KTH Royal Institute of Technology (SE))
Dark Matter: Dark Matter
- Martin Stahlberg (Max Planck Institute for Physics)
- Marek Matas (Czech Technical University)
Dark Matter: Dark Matter
- Christian Ohm (KTH Royal Institute of Technology (SE))
- Marek Matas (Czech Technical University)
Dark Matter: Dark Matter
- Sara DIGLIO (SUBATECH/CNRS/In2p3)
- Marek Matas (Czech Technical University)
The axion represents a well-motivated dark matter candidate with a relatively unexplored range of viable masses. Recent calculations argue for post-inflation axion mass ranges corresponding to frequencies of roughly 10-100 GHz. These frequency ranges offer challenges for the traditional cavity halscope which can be overcome through the use of metamaterial resonators that fill large volumes....
The MAgnetized Disk and Mirror Axion eXperiment is a future experiment aiming to detect dark matter axions from the galactic halo by resonant conversion to photons in a strong magnetic field. It uses a stack of dielectric disks, called booster, to enhance the axion-photon conversion probability over a significant mass range. Several smaller scale prototype systems have been developed and used...
The Haloscope At Yale Sensitive To Axion CDM (HAYSTAC) experiment is a microwave cavity used to search for cold dark matter (CDM) axions with masses above 10 $\mu$eV. HAYSTAC searches for axion conversion into a resonant photon signal in an 8 T magnetic field, due to the Primakoff effect. In typical cavity experiments, the output signal power is exceedingly small, and thus quantum amplifiers...
DEAP-3600, with its 3.3 tonnes liquid argon target, is a dark matter direct detection experiment set at SNOLAB in Sudbury, Canada. Since 2019 the experiment has held the most stringent exclusion limit in argon for Weakly Interacting Massive Particles (WIMPs) above 20 GeV/c^2.
Since the end of the second fill run in 2020 the detector has been upgraded, to reduce the backgrounds coming from...
Dark matter candidates with masses below 10 GeV/cยฒ show considerable potential. Our last-generation detector, DarkSide-50, has achieved world-leading results in this mass range using ionization-only analysis with 46kg of active mass. Building upon the advancements of DarkSide-50 for low-mass dark matter searches, and in line with the ongoing progress towards the next-generation high-mass dark...
DarkSide-20k is a direct dark matter search experiment located at Laboratori Nazionali del Gran Sasso (LNGS). It is designed to reach an exposure of 200 tonne-years free from instrumental backgrounds. The core of the detector is a dual-phase Time Projection Chamber (TPC) filled with 50 tonnes of low-radioactivity liquid argon. The TPC is surrounded by a gadolinium-loaded polymethylmethacrylate...
XENONnT is the current experiment of the XENON dark matter (DM) project, currently in data acquisition at the INFN Laboratori Nazionali del Gran Sasso (Italy). The detector employs a LXe dual-phase TPC with an active target mass of 5.9 t. The TPC is surrounded by two water Cherenkov detectors, which serve as active muon and neutron veto systems.
XENONnT completed its first science run (SR0)...
LUX-ZEPLIN (LZ) is an experiment built for direct detection of dark matter with world-leading sensitivity over a diverse science program. LZ has been operating at the Sanford Underground Research Facility (SURF) in South Dakota since 2021. The experiment employs three nested detectors; a central dual phase TPC with 7 tonnes of xenon in its active region, an instrumented liquid xenon skin, and...
LUX-ZEPLIN (LZ) is a dark matter experiment located at the Sanford Underground Research Facility in South Dakota, USA employing a 7 tonne active volume of liquid xenon in a dual-phase time projection chamber (TPC). It is surrounded by two veto detectors to reject and characterize backgrounds. A comprehensive material assay and selection campaign for detector components, along with a xenon...
Dark Matter (DM) still eludes detection by modern experiments and its nature puzzles the minds of physicists. Weakly Interacting Massive Particles (WIMPs) are commonly seen as one of the prime candidates for the role of DM. The DARk matter WImp search with liquid xenoN (DARWIN) detector is envisioned to be the ultimate multi-tonne xenon-based direct detection astroparticle observatory. Hosting...
CYGNO is developing a high-precision gaseous Time Projection Chamber to be installed at the Gran Sasso National Laboratories (LNGS) for directional studies of rare low energy events, as dark matter. The detector consists in a TPC filled with He:CF4 gas mixture operating at atmospheric pressure with a triple GEM amplification stage. The gas scintillating properties allow the realization of an...
PandaX-4T detector is a dual phase xenon time projection chamber. In 2021, the commissioning run set the most stringent limit on dark matter-nucleon spin-independent interactions in the mass range from GeV to TeV level. However, for sub-GeV light dark matter, the nuclear recoil energy falls below the detection threshold of approximately 5 keV in the traditional search window requiring the...
The ANAIS experiment aims to independently verify or refute the longstanding positive annual modulation signal observed by DAMA/LIBRA using the same target and technique. While other experiments have ruled out the parameter region highlighted by DAMA/LIBRA, their results rely on assumptions on the dark matter particle and its velocity distribution, as they utilize different target materials....
The COSINE-100 experiment aims to detect dark matter-induced recoil interactions in NaI(Tl) crystals to test the DAMA/LIBRA collaboration's claim.
Data taking operated from September 2016 to March 2023 at the Yangyang underground laboratory in Korea, utilizing 106 kg of low-background NaI(Tl) detectors.
The COSINE-100 experimental setup was moved to a newly built underground laboratory,...
SABRE aims to provide a model independent test of the signal observed by DAMA/LIBRA through two separate detectors that rely on joint ultra-high NaI(Tl) purity crystal R&D activities: SABRE South at SUPL Australia and SABRE North at LNGS Italy. SABRE South is designed to disentangle seasonal/site-related effects from the dark matter-like modulated signal. Ultra-high purity crystals are...
SABRE aims to deploy arrays of ultra-low background NaI(Tl) crystals to carry out a model-independent search for dark matter through the annual modulation signature. SABRE will be a double-site experiment, made up of two separate detectors which rely on a joint crystal R&D activity, located in the North (LNGS) and Sout hemisphere (SUPL). SABRE has carried out, since more than 10 years, an...
Indirect dark matter detection experiments aim to observe the annihilation or decay products of dark matter. The flux of neutrinos produced by such processes in nearby dark matter containers, such as the Sun and the Galactic Centre, could be observed in neutrino telescopes. The KM3NeT observatory is composed of two undersea ฤerenkov neutrino telescopes (KM3NeT-ORCA and ARCA) located offshore...
We study the possibility for large volume underground neutrino experiments
to detect the neutrino flux from captured inelastic dark matter in the Sun.
The neutrino spectrum has two components: a mono-energetic "spike" from
pion and kaon decays at rest and a broad-spectrum "shoulder" from prompt
primary meson decays. We focus on detecting the shoulder neutrinos
from annihilation of...
BESIII is a symmetric $e^+e^-$ collider operating at c.m. energy from 2.0 to 4.95 GeV. With the worldโs largest data set of $J/\psi$ (10 billion), and $\psi$(3686) (2.6 billion), and about $25 fb^{-1}$ of energy scan data from 3.77 to 4.95 GeV, various dark sectors particles produced in $e^+e^-$ annihilation and meson decay processes can be searched for at BESIII. Axion-like particles (ALPs)...
The Scintillating Bubble Chamber (SBC) experiment is a novel low-background technique aimed at detecting low-mass WIMP interactions and coherent scattering of reactor neutrinos (CEvNS). The detector consists of a quartz-jar filled liquid argon, spiked with 100 ppm of xenon to act as a wavelength shifter. The target fluid is de-pressurized into a super-heated state by a mechanically controlled...
Diagrammatic approaches to perturbation theory transformed the practicability of calculations in particle physics. In the case of extended theories of gravity, however, obtaining the relevant diagrammatic rules is non-trivial: we must expand in metric perturbations and around (local) minima of the scalar field potentials, make multiple field redefinitions, and diagonalise kinetic and mass...
Sterile neutrinos are well-motivated and simple dark matter (DM) candidates. However, sterile neutrino DM produced through oscillations by the Dodelson-Widrow mechanism is excluded by current X-ray observations and bounds from structure formation. One minimal extension, that preserves the attractive features of this scenario, is self-interactions among sterile neutrinos. In this work, we...
Experiments using positron beams impinging on fixed targets offer unique capabilities for probing new light dark particles feebly coupled to e^+ e^- pairs, that can be resonantly produced from positron annihilation on target atomic electrons. In this talk, I will discuss the impact of correctly accounting for the momentum distribution of the atomic electrons that shifts the center of mass...
We conduct an analysis to investigate DM with hypercharge anapole moments, focusing on the scenario of a spin-1/2 or 1 Majorana DM interacting with SM particles through U(1) hypercharge anapole terms. We construct general and hypercharge gauge-invariant 3-point vertices for the interactions of a virtual $\gamma/Z$ with two identical massive Majorana particles of any spin. We calculate the...
The PADME experiment was originally designed to test dark matter theories predicting the existence of a "Dark Sector" composed of particles that interact with Standard Model ones exclusively through the exchange of a new, massive mediator.
The confirmation of the X17 anomaly, observed in nuclear decays at the ATOMKI in Debrecen, sparked considerable interest in the particle physics community....
Dark SHINE is a fixed-target experiment initiative at SHINE (Shanghai high repetition rate XFEL and extreme light facility, being the 1st hard X-ray FEL in China) under construction targeting completion in 2026. Dark SHINE aims to search for the new mediator, Dark Photon, bridging the Dark sector and the ordinary matter. In this work and presentation, we present the idea of this new project...
SuperCDMS SNOLAB is a direct dark matter search experiment currently under construction at SNOLAB in Sudbury, Canada. SuperCDMS will deploy 24 cryogenic Si and Ge detectors, arranged in 4 towers with 6 detectors each. Although all 4 towers have been previously tested at SLAC, the extent of testing was limited due to large cosmogenic background at this surface facility. Two of the towers...
The Super Cryogenic Dark Matter Search (SuperCDMS) SNOLAB experiment is currently under construction 2 km underground at the SNOLAB facility near Sudbury, Canada. Utilizing 24 state-of-the-art cryogenic germanium (Ge) and silicon (Si) detectors, the experiment aims to achieve world-leading sensitivity in the direct search for dark matter (DM) particles interacting with nuclei, spanning masses...
The DAMIC-M (DArk Matter In CCDs at Modane) experiment will use skipper CCDs to search for low mass (sub-GeV) dark matter underground at the Laboratoire Souterrain de Modane (LSM). With about 1kg of silicon target mass and sub-electron energy resolution, the detector will surpass the exposure and threshold (eV-scale) of previous experiments. Thus, DAMIC-M will have world-leading sensitivity to...
Dark matter is a hypothetical new form of matter that does not interact with the electromagnetic field and has a very weak interaction with ordinary matter. WIMPs are prime dark matter candidates, but most experiments are constrained to spin-independent interactions in the 10-100 GeV/$c^2$ mass range.
QUEST-DMC (Quantum Enhanced Superfluid Technologies for Dark Matter and Cosmology) is a...
DarkSide-20k, a noble liquid argon using double-phase time projection
chamber, being constructed as a direct dark matter detection experiment
with 50 tonnes of fiducial target mass. The key component of the
experiment is low radioactivity argon (UAr) depleted in the isotope
39Ar.
The journey of UAr shall start from Urania plant in Colorado, with a
purity of 99.99% post extraction from...
Determination of the nature of dark matter is one of the most fundamental problems of particle physics and cosmology. This talk presents recent searches for dark matter particles in mono-X final states from the CMS experiment at the Large Hadron Collider. The results are based on proton-proton collisions recorded at sqrt(s) = 13 TeV with the CMS detector.
The Belle and Belle$~$II experiment have collected samples of $e^+e^-$ collision data at centre-of-mass energies near the $\Upsilon(nS)$ resonances. These data have constrained kinematics and low multiplicity, which allow searches for dark sector particles in the mass range from a few MeV to 10$~$GeV. Using a 426$~$fb$^{-1}$ sample collected by Belle$~$II, we search for a light dark photon...
We present the most recent $BABAR$ searches for reactions that could simultaneously explain the presence of dark matter and the matter-antimatter asymmetry in the Universe. This scenario predicts exotic $B$-meson decays of the kind $B\to\psi_{D} {\cal B}$, where $\cal{B}$ is an ordinary matter baryon (proton, $\Lambda$, or $\Lambda_c$) and $\psi_D$ is a dark-sector anti-baryon, with branching...
The natural scenario where dark matter originates from thermal contact with familiar matter in the early universe requires the DM mass to lie within about MeV to 100 TeV. Considerable experimental attention has been given to exploring WIMPs in the upper end of this range, while the sub-GeV region is largely unexplored, even though a thermal origin for dark matter works in a predictive manner...
One of the indirect detection method of dark matter (DM) is based on the search of the products of DM annihilation or decay. They should appear as distortions in the gamma rays spectra and in the rare Cosmic Ray (CR) components, like antiprotons, positrons and antideuterons, on top of the standard astrophysical production. In particular, the antiprotons in the Galaxy are mainly of secondary...
The presence of a non-baryonic Dark Matter (DM) component in the Universe is inferred from the observation of its gravitational interaction. If Dark Matter interacts weakly with the Standard Model (SM) it could be produced at the LHC. The ATLAS experiment has developed a broad search program for DM candidates, including resonance searches for the mediator which would couple DM to the SM,...
The nature of dark matter is one of the most relevant open problems both in cosmology and particle physics.The NEWSdm experiment, located in the Gran Sasso underground laboratory in Italy, is based on a novel nuclear emulsion technology with nanometric resolution and new emulsion scanning microscopy that can detect recoil track lengths down to one hundred nanometers. Therefore, it is the most...
The KNU Advanced Positronium Annihilation Experiment (KAPAE) has developed a phase II detector to search for positronium invisible decay such as milli-charged particles, mirror world, axion, new light X-boson, and extra dimensions. KAPAE phase II detector optimized to detect gamma rays emitted during the annihilation of positronium and identify missing energy. It consists of a 5 ร 5 array of...
The PICO collaboration employs bubble chambers filled with fluorocarbon fluids as targets in their active programme searching for dark matter via direct detection. The detectors are situated 2km deep underground at SNOLAB in Canada. Exploiting their insensitivity to electron recoil backgrounds, these detectors exhibit exceptional capability in background rejection.
This talk will present the...
Anti-nuclei heavier than anti-D are unlikely to be formed during cosmic rays (CRs) propagation, as confirmed by the PHOENIX and ALICE collaborations. Anti-He observations could be related to Dark Matter interactions. Dedicated experiments must possess high charge sign discrimination to observe anti-He due to the He abundance in CR. Detector's effects, such as the rigidity resolution and the...
The NEWS-G collaboration is searching for light dark matter candidates using a novel gaseous detector concept, the spherical proportional counter. Access to the mass range from 0.05 to 10 GeV is enabled by the combination of low energy threshold, light gaseous targets (H, He, Ne), and highly radio-pure detector construction. First physics results using the commissioning data of a 140 cm in...
