Conveners
Parallel 2B - Axions
- Holger Martin Kluck
Parallel 2B - Axions
- Karl van Bibber (University of California Berkeley)
The Haloscope At Yale Sensitive To Axion Cold dark matter (HAYSTAC) is both a data pathfinder and an innovation test bed for the 3-12 GHz (~12.5-50 ueV) mass range. A collaboration of Yale, Colorado, Berkeley and Johns Hopkins, the experiment has pioneered the implementation of quantum-limited amplifiers and more recently a squeezed-state receiver which circumvents the standard quantum limit...
Spin-precession experiments are the leading efforts to detect axion dark matter interacting with nuclei. The experimental strategy is to polarize the nuclear spin in one direction with a background magnetic field and search for spin-precession induced by the oscillating axion field using a sensitive magnetometer. I revisit the experimental strategy over all hierarchies between the relevant...
The Taiwan Axion Search Experiment by Haloscope (TASEH) is the first axion experiment in Taiwan. Our detector system included a tunable-frequency cavity immersed in a static magnetic field of 8 Tesla and an amplifier chain with a system noise of ~ 2.2K. From the first data taken in 2021, we excluded the axion-photon coupling $|g_{a𝛾𝛾}| ≳ 8.2 × 10^{-14} GeV^{-1}$, a factor of eleven above the...
The Any Light Particle Search II (ALPS II) is a light-shining-through-a-wall (LSW) style experiment currently under construction at DESY in Hamburg, Germany. ALPS II will probe for axions and axion-like particles in the mass range below 0.1 meV. LSW experiments create an axion field by shining a laser through a dipolar magnetic field. The axion field then passes through a wall that blocks the...
The MAgnetized Disc And Mirror Axion eXperiment is designed to search for dark matter axions in the mass range of 40 to 400 µeV, a range previously inaccessible by other experiments. This mass range is favored by models in which the PQ symmetry is broken after inflation. The required sensitivity is reached in MADMAX by applying the dielectric haloscope approach, exploiting the axion to photon...
DMRadio is a series of experiments that searches for axions using the axion-photon coupling at frequencies lower than those which have been achieved with conventional cavity haloscopes. In this talk we present the status of two experiments of the DMRadio program: DMRadio 50L and DMRadio m$^3$. DMRadio 50L uses a toroidal magnet and a high-Q LC-oscillator with target sensitivity to axions with...
The proposed LUXE experiment (LASER Und XFEL Experiment) at DESY, Hamburg, using the electron beam from the European XFEL, aims to probe QED in the non-perturbative regime created in collisions between high-intensity laser pulses and high-energy electron or photon beams. This setup also provides a unique opportunity to probe physics beyond the standard model. In this talk we show that by...
Axion-like particles (ALPs), the QCD axion, are well motivated candidates for Cold Dark Matter. Such models may be divided into two classes depending on whether the associated U(1) symmetry is broken or not during inflation. The latter case is usually considered to be quite simple with relic density depending only on the corresponding decay constant and with no constraints from the known...
In 2021 the Quantum Sensors for the Hidden Sector (QSHS) collaboration in
the UK was founded and received funding to develop and demonstrate quantum
devices with the potential to detect hidden sector particles in the
microeV to 100microeV mass window. The collaboration has been developing a
range of devices and has started to develop a high-field, low-temperature
facility at Sheffield...
The axion provides a solution for the strong CP problem and is one of the promising candidates for dark matter. In 2020, the XENON1T experiment reported an excess of electronic recoil events, possibly interpreting as the solar axion, an enhanced neutrino magnetic moment or the beta decays of tritium. The Investigating Solar Axion by Iron-57 (ISAI) is being developed as a complemented table-top...
A search for resonance excitation of $^{7}$Li by the solar axion has been studied with the Li$_{2}$MoO$_{4}$ crystals in the AMoRE experiment. The axion is a hypothetical particle proposed to solve the so-called strong CP problem of quantum chromodynamics (QCD). If the axions exist, they could be extensively produced inside the Sun, then can be detected in the inverse reaction of resonance...
