Particle Avenues in the Dark Universe Arena (PADUA): Light Dark Sectors

Francesco D'Eramo (University of Padua)

Astronomical and cosmological observations reveal that visible matter constitutes only a fraction of the total mass of the universe. Some form of dark matter, five times more abundant than ordinary matter, must exist. However, these observations tell us nothing about the origin and composition of this invisible constituent. None of the known particles is a viable candidate, and this firm empirical evidence leaves no doubt about the need for physics beyond the standard model.

Unveiling the mystery of dark matter will rely upon the synergy between investigations of nature at the largest and smallest length scales. 

In the last few years, the possibility that dark matter is light and belongs to a dark sector feebly interacting with the standard model fields has attracted substantial attention.  The PADUA workshop will gather world experts to review the state-of-the-art of light dark sector models and explore novel ideas to search for them.

The participation in the workshop includes coffee breaks and social dinner. No registration fee is required. Due to the room capacity of the workshop venue, the number of participants will be limited. 

The deadline to apply is July 9th, 2023.


  • Brian Batell (University of Pittsburgh)
  • Martin Bauer (Durham University)
  • Diego Blas (IFAE Barcelona)
  • Xiaoyong Chu (HEPHY Vienna)
  • Djuna Croon (Durham University)
  • Raffaele Tito D'Agnolo (IPhT Saclay)
  • Angelo Esposito (Sapienza University of Rome)
  • Joshua Foster (Massachusetts Institute of Technology)
  • Gordan Krnjaic (Fermilab and University of Chicago)
  • Christopher McCabe (King's College London)
  • Enrico Nardi (INFN LNF)
  • Elena Pinetti (University of Chicago and Fermilab)
  • Antonio D. Polosa (Sapienza University of Rome)
  • Adam Ritz (University of Victoria)
  • Pedro Schwaller (Johannes Gutenberg University Mainz)
  • Bibhushan Shakya (DESY)
  • Andrea Tesi (INFN Florence)


  • Francesco D'Eramo
  • Luca Di Luzio
  • Antonio Masiero
  • Marco Peloso
  • Ennio Salvioni
  • Luca Vecchi


  • Pina Salente
  • Silvana Schiavo
  • Paola Zenere
  • Adam Ritz
  • Alessandra Gnecchi
  • Alessandro Morandini
  • Alessandro Valenti
  • Andrea Tesi
  • Angelo Esposito
  • Antonio Davide Polosa
  • Antonio Masiero
  • Ashutosh Alok
  • Bibhushan Shakya
  • Brian Batell
  • Christopher McCabe
  • Claudio Toni
  • Diego Blas
  • Djuna Croon
  • Elena Pinetti
  • Ennio Salvioni
  • Enrico Nardi
  • Fabio Zwirner
  • Federico Pavone
  • Ferruccio Feruglio
  • Francesco D'Eramo
  • Gabriele Levati
  • Giulio Alvise Dainelli
  • Giulio Barni
  • Gordan Krnjaic
  • Joshua Foster
  • Luca Di Luzio
  • Luca Vecchi
  • Marco Gorghetto
  • Marco Peloso
  • Martin Bauer
  • Michele Frigerio
  • Muhammad Usman
  • Neetu Raj Singh Chundawat
  • Pedro Schwaller
  • Philip Soerensen
  • Piero Ullio
  • Qaisar Shafi
  • Raffaele D'Agnolo
  • Ramona Gröber
  • Roberta Calabrese
  • Ryan Janish
  • Saeid Foroughi-Abari
  • Saniya Heeba
  • Sebastian Hoof
  • Silvia Gasparotto
  • Sofia Calgaro
  • Stefano Morisi
  • Sukannya Bhattacharya
  • Tommaso Sassi
  • Ville Vaskonen
  • Xavier Ponce Diaz
  • Xiaoyong Chu
    • 9:00 AM 9:50 AM
    • 9:50 AM 10:00 AM
      Welcome to PADUA 2023
      Convener: Francesco D'Eramo (University of Padua)
      • 9:50 AM
        Welcome from the University of Padua 5m
        Speaker: Fabio Zwirner
      • 9:55 AM
        Welcome from the Istituto Nazionale di Fisica Nucleare (INFN) 5m
        Speaker: Roberto Carlin
    • 10:00 AM 12:00 PM
      Day 1 - Morning
      Convener: Luca Vecchi
      • 10:00 AM
        Dark Matter Misalignment through the Higgs Portal 30m
        Speaker: Brian Batell
      • 10:30 AM
        Dark Matter in a symmetric world without strong CP problem 30m
        Speaker: Andrea Tesi
      • 11:00 AM
        Coffee Break 30m
      • 11:30 AM
        Two surprises in axion and hidden photon physics 30m
        Speaker: Martin Bauer
    • 3:30 PM 5:00 PM
      Day 1 - Afternoon
      Convener: Marco Peloso
      • 3:30 PM
        Direct detection of light dark matter with carbon nanotubes and superfluid helium 30m
        Speaker: Antonio Davide Polosa
      • 4:00 PM
        Results from the MIGDAL experiment’s commissioning with D-D neutrons 30m
        Speaker: Christopher McCabe
      • 4:30 PM
        Sub-GeV dark matter in the lab: new ideas and new tools 30m
        Speaker: Angelo Esposito
    • 6:00 PM 8:00 PM
      Welcome Reception
    • 10:00 AM 12:30 PM
      Day 2 - Morning
      Convener: Luca Di Luzio
      • 10:00 AM
        The X17 boson anomaly: status and prospects 30m
        Speaker: Enrico Nardi
      • 10:30 AM
        Probing dark sectors at accelerators via proton bremsstrahlung 30m
        Speaker: Adam Ritz
      • 11:00 AM
        Coffee Break 30m
      • 11:30 AM
        Dark matter (h)eats young planets 30m
        Speaker: Djuna Croon
      • 12:00 PM
        Connect the visible and dark Universe via one photon 30m
        Speaker: Xiaoyong Chu
    • 2:30 PM 4:30 PM
      Day 2 - Afternoon
      Convener: Ennio Salvioni
      • 2:30 PM
        Putting all the X in one basket: X-ray constraints on sub-GeV dark matter 30m
        Speaker: Elena Pinetti
      • 3:00 PM
        Was there a 3.5 keV line? 30m
        Speaker: Joshua Foster
      • 3:30 PM
        Coffee Break 30m
      • 4:00 PM
        Viable Indirect Detection for sub-GeV Thermal DM 30m
        Speaker: Gordan Krnjaic
    • 5:30 PM 6:30 PM
      Visit at the Giovanni Poleni Museum
    • 8:00 PM 11:00 PM
      Social Dinner
    • 10:00 AM 12:30 PM
      Day 3 - Morning
      Convener: Antonio Masiero
      • 10:00 AM
        Light dark sectors and nano-Hz gravitational waves 30m
        Speaker: Pedro Schwaller
      • 10:30 AM
        Phenomenological Aspects of Dark First Order Phase Transitions 30m
        Speaker: Bibhushan Shakya
      • 11:00 AM
        Coffee Break 30m
      • 11:30 AM
        Axion Dark Matter and Gravitational Wave Detection with Microwave Cavities 30m
        Speaker: Raffaele Tito D'Agnolo
      • 12:00 PM
        Closing gaps in the Gw spectrum: Ideas to detect muHz and high fr GWs 30m
        Speaker: Diego Blas