21st Patras Workshop on Axions, WIMPs and WISPs

Session

Wednesday Morning

11 Nov 2026, 08:40

University of Western Australia

28. Direct and indirect probes of gravity-mediated dark matter in large extra dimensions scenario

Igor Samsonov (UNSW)

11/11/2026, 08:40

Oral Presentation

Dark matter coupled to the Standard Model only through gravity is usually regarded as beyond the reach of laboratory searches. In models with large extra dimensions this expectation can be altered, since the short-distance gravitational potential is enhanced and scales as ($1/r^{1+n}$). I will discuss dark-matter scattering in Arkani-Hamed–Dimopoulos–Dvali scenarios, where exchange of...

29. Microwave Cavity Searches for Axion Dark Matter at IBS-DMAG

Sung Woo YOUN (IBS-DMAG)

11/11/2026, 08:55

Invited Presentation

The QCD axion is a compelling dark matter candidate motivated by the Peccei–Quinn solution to the strong CP problem. The IBS Dark Matter Axion Group (IBS-DMAG) searches for axion dark matter using cavity haloscopes, where axion–photon conversion is enhanced by strong magnetic fields and high-Q microwave resonators. In this talk, I will present recent IBS-DMAG results, highlighting the...

31. Latest Results and Prospects from the XENONnT Experiment

Sara Diglio (SUBATECH/CNRS/In2p3)

11/11/2026, 09:15

Invited Presentation

The XENONnT experiment operates a dual-phase liquid xenon time projection chamber at the INFN Laboratori Nazionali del Gran Sasso, designed primarily to search for weakly interacting massive particles (WIMPs). Thanks to its ultra-low background rate and low energy threshold, XENONnT is also uniquely sensitive to a wide range of rare processes, including coherent elastic neutrino-nucleus...

73. Testing Antimatter Couplings with Spectroscopy and Other Methods

Lucas Puetter (ITP Heidelberg)

11/11/2026, 09:35

Invited Presentation

We investigate how scalar-mediated potentials with Lorentz-violating couplings to Standard Model fermions affect spectroscopic observables in atoms and highly charged ions. Suitable combinations of an ordinary scalar and a time-like component of a Lorentz violating vector coupling allow for a split into "matter" and "antimatter" couplings, at least in the non-relativistic limit. By considering...

118. Electron-coupled dark matter search with an ultrasensitive superconducting magnetometer

David Herbschleb (QUP, KEK)

11/11/2026, 09:55

Oral Presentation

Ultra-low mass axion-like particles are well-motivated dark matter candidates. The wave-like behaviour in the sub-eV mass range is leveraged for searches for this possibility via coupling to fermion spins. In the non-relativistic limit, spins experience this dark matter background as a minuscule pseudo-magnetic field that can be measured exploiting quantum sensing methods. Here, we explore a...

30. DALI: First Results and Future Prospects

Abaz Kryemadhi (Messiah University)

11/11/2026, 10:40

Invited Presentation

The Dark-photons & Axion-Like particles Interferometer (DALI) is a novel haloscope concept designed to search for axions and dark photons above 25 μeV using a large area magnetized phased array and a tunable Fabry–Pérot resonator. A proof-of-principle demonstrator operated at the Instituto de Astrofísica de Canarias has successfully validated the core DALI technologies and produced the first...

21. First searches for axion and dark photon dark matter with MADMAX prototypes

Akira Miyazaki (Université Paris-Saclay (FR))

11/11/2026, 11:00

Invited Presentation

The QCD axion is a well-motivated hypothetical particle that simultaneously addresses the strong CP problem and constitutes a compelling cold dark matter candidate. The MADMAX experiment (Magnetized Disk and Mirror Axion Experiment) is designed to search for dark matter axions and similar particles (axion-like particles and dark photons) in the mass range of 40–400 μeV by boosting the...

80. The FLASH and QUAX-LNF Haloscopes in the GravNet Network

Alessio Rettaroli (INFN - LNF)

11/11/2026, 11:20

Invited Presentation

GravNet is an international collaboration developing a distributed network of quantum-enhanced haloscopes to search for light dark matter and high-frequency gravitational waves (HFGWs) in the MHz-GHz frequency range. By coherently combining time-synchronized resonant detectors, GravNet aims to significantly extend the sensitivity achievable with individual experiments. The collaboration...

91. DOSUE-RR: New Results of a Dark Photon Dark Matter Search with a Millimeter-Wave Receiver in the 80–160 μeV/c² Mass Range

Hiroki Takeuchi (Kyoto University)

11/11/2026, 11:40

Oral Presentation

We report on a direct search for dark photon dark matter with the DOSUE-RR experiment in the mass range of 80–160 $\mu \rm{eV}/c^2$, corresponding to 19-38 GHz. Dark photon dark matter can convert into ordinary photons at a conducting surface, producing a narrow-band millimeter-wave signal whose frequency is determined by the dark photon mass. The experiment searches for this signal using a...