Conveners
DM: Dark Matter: DM-1
- Bjoern Penning (Unive)
- Deborah Pinna (Boston University)
DM: Dark Matter: DM-2
- Bjoern Penning (Unive)
- Deborah Pinna (Boston University)
DM: Dark Matter
- Bjoern Penning (Unive)
- Deborah Pinna (Boston University)
Description
Dark Matter
LUX-ZEPLIN (LZ) is a low-background, multi-detector dark matter experiment centered on a time projection chamber (TPC) utilizing a 7 t liquid xenon target to observe dark matter interactions. It is currently being operated 4850 ft underground at the Sanford Underground Research Facility (SURF) in Lead, South Dakota. In this talk, I will give an overview of the LZ project and present an...
Understanding the nature of Dark Matter (DM) is one of the open issues in modern physics. In this context, XENON project aims to lead the effort on DM direct detection using ton-scale xenon dual-phase time projection chamber technology, operating in a low background environment. The status of XENONnT detector, running at the underground LNGS (L'Aquila, Italy) laboratories, will be shown. The...
The XENONnT experiment, located at the INFN Laboratori Nazionali del Gran Sasso (LNGS) in Italy, uses a dual-phase xenon time projection chamber with a liquid xenon target of 5.9 tonnes. The electronic recoil (ER) background in the (1, 30) keV region is measured to be (16.1±1.3) events/(tonne×year×keV), five times lower than that in XENON1T and the lowest ever achieved in a dark matter...
LUX-ZEPLIN (LZ) is a direct dark matter detection experiment aiming to detect rare events resulting from the scattering of Weakly Interacting Massive Particles (WIMPs). It employs a dual-phase xenon time projection chamber (TPC) with an active mass of 7 tonnes (5.6 tonne fiducial), surrounded by an instrumented xenon skin and liquid scintillator active vetoes. Significant effort has been made...
Despite its abundance, little is known about the particle nature of dark matter. Liquid argon-based detectors deployed in underground laboratories are powerful probes for direct detection dark matter searches, due to their scalability to large target masses, the low price of argon, their strong particle identification power using pulse shape discrimination to separate electronic and nuclear...
With its excellent energy resolution and ultra-low backgrounds, the high-purity germanium detectors in the Majorana Demonstrator enable several searches for beyond the Standard Model physics. These range from the primary neutrinoless double beta decay search to searches for several classes of exotic dark matter models, axions, and tests of quantum mechanical conservation laws. In this talk,...
The LUX-ZEPLIN (LZ) detector consists of 7 tonnes (5.6 tonnes fiducial) of liquefied xenon in a
dual-phase Time Projection Chamber (TPC), which is sensitive to the nuclear and electron recoils
induced by Weakly Interacting Massive Particles (WIMPs). Among the various type of background
particles, neutrons pose a great threat to the WIMPs searches due to the indistinguishable...
Potassium-40 ($^{40}$K) is a naturally-occurring, radioactive isotope impacting understanding of nuclear structure, geological ages spanning timescales as old as the Earth, and rare-event searches including those for dark matter and neutrinoless double beta decay. In many advancing fields, the accelerating precision required for new discoveries has been limited by knowledge of the $^{40}$K...
Cold dark matter is one of the major constituents of the leading cosmological model for our Universe, with many ongoing experimental efforts at directly detecting interactions of the hypothetical particle with terrestrial detectors.
SuperCDMS SNOLAB is a Generation-2 dark matter experiment under construction at SNOLAB in Sudbury, Canada. The experiment will employ two types of state of the...
The SPICE and HeRALD experiments aim to probe dark matter (DM) masses down to 10 MeV, with upgrade paths to sub-MeV masses. The project is currently in a preparatory R&D phase focused on first pushing Transition Edge Sensor (TES) recoil energy thresholds into the sub-eV regime, and then applying this next generation of sensors to a variety of well-motivated target materials. The HeRALD...
Axions represent a leading class of dark matter candidate that has gained considerable interest in recent years. In order to probe its largely unexplored axion parameter space across multiple frequency decades, new experimental techniques are required. The HAYSTAC (Haloscope At Yale Sensitive To Axion Cold dark matter) experiment is a tunable microwave cavity experiment searching for axions,...
The DMRadio suite of experiments seeks to search for one of the most promising Dark Matter (DM) candidates, the axion, via an optimized resonant lumped element search. In order to cover as wide of a parameter space as possible, each of the DMRadio experiments is designed to cover specific complementary mass regions starting from 5 kHz (≈ 20 peV) in the DMRadio-50L experimental all the way up...
Cosmogenic background is increasingly recognized as being important for dark matter direct detection experiments, especially as other sources of background have been well-understood and massively reduced, so as to increase the sensitivity for detecting rare dark matter events. This key background in NaI(Tl) arises from the cosmogenic radioisotopes like $^3$H and $^{22}$Na, that are low in the...
Several pieces of evidence point toward the existence of Dark Matter (DM). One detection strategy is the search for self-annihilation or decay into standard model particles. We present a novel technique to constrain the DM annihilation rate and the DM decay rate by employing Earth-based detectors such as XENON1T or Borexino. While the primary goal of these detectors is either direct detection...
Abstract
The Modified Archimedes Principle (MAP) is a modified gravity theory, which holds that a massive body, such as the sun, or a mass equivalent vacuum energy body, such as a halo, which is immersed in the vacuum energy of space, displaces a volume of such space that is centered on such body, through a mass repelling displacement force that complements the mass attracting gravitational...
In dark sector theories, DM is just one particle within a hidden sector of the Universe that could be every bit as complex as our own. This can lead to a wide range of exotic signatures that could be observed at the LHC, including long-lived particles, DM scattering and millicharged particles. As these signatures are often invisible to general purpose detectors, in this talk I will focus on...
The $A$ Prime ($A′$) Experiment was a search performed at Hall A of the Thomas
Jefferson National Accelerator Facility (Jefferson Lab, or JLab), looking for evidence
of a dark vector gauge boson (also called a‘dark photon’). The dark
photon of interest, denoted as $A′$, is theorised to interact with the Standard
Model through kinematic mixing, which is characterised by a strength...
