DMLab@Paris

21 oct. 2026, 09:00 → 22 oct. 2026, 14:00 Europe/Paris

Amphitheatre Charpak (LPNHE Paris)

Dirk ZERWAS (DMLab), Luca Scotto Lavina (LPNHE Paris), Thomas Schörner (DESY)

This event is sponsored by the Deutsch-Französische Hochschule/Université Franco-Allemande

Dark matter is one of the great puzzles of nature: according to current estimates, more than 85% of the matter in the universe is in the form of dark (only gravitating) matter, of which today we know nothing. Any discovery of new physics will be related directly or indirectly to dark matter: by discovering a dark matter particle or by measuring fundamental properties in models providing a dark matter candidate. Dark matter is also likely related to gravitational waves and multi-messenger astroparticle physics.

The International Research Laboratory (IRL) DMLab between the CNRS/IN2P3 and the Helmholtz association represented by its centers DESY, KIT and GSI, focusses on the theme of dark matter.  

To address various challenges in dark matter physics the IRL is structured in six topics: direct dark matter searches, multi-messenger particle physics and gravitational waves, novel accelerator concepts, computing and data science, particle detector technologies, and theoretical physics.

During the meeting we aim to discuss the ongoing projects as well as new ideas. 

The first half-day will be co-organized with GDR DUPhy (Deep Underground Physics), a French research network (English-friendly) focused on underground physics, particularly the search for dark matter and neutrinoless double beta decay. While registration with DUPhy is not required, you may find its program of interest. During this session, 10 students from the U.S. will attend. Their trip has been organized by the IRL PPC and funded by the FADEx (French American Doctoral Exchanges) program  « The Dark Side of the Universe ».

 

Hotel accommodation: 

• Many hotels are available in Paris, if you would like to stay close, you can try Booking

Public Transportation in Paris:

• Transportation tickets can be bought with several Apps: Bonjour RATP
• General information like maps, ticket prices etc: RATP or Ilde France Mobilites
   

Jussieu:

• Bus lines:  67 et 89
•  Métro Lines: 7 et 10.
• At the main entrance you only have to open your bags for a security check, no identity check

AUDITORIUM:

• Auditorium Charpak
• Go to tower 22 (see also map below), go down the stairs and follow the signs

 

Lunch (paid centrally): The Ardoise on the Jussieu Campus (tower 26, "Lunch" on the above map). 

Dinner (paid centrally): TBD

Help: if you need any help, please contact one of the following: Luca Scotto Lavina (+33 (0)6 47 30 31 69), Yajing Xing (+33 (0)7 58 45 52 03)

Participation in the meeting: please register, the ZOOM link will be accessible only if you have an indico account, logged in  and registered to the meeting. For those without indico account the link will be sent by mail about 30 minutes before the meeting starts.

ZOOM

mer. 21 octobre

09:00 → 09:30 Welcome

09:00 Welcome DMLab

Orateurs: Dirk ZERWAS (DMLab), Thomas Schörner (DESY)

09:10 Welcome to LPNHE

Orateurs: Luca Scotto Lavina (LPNHE Paris), Marco Zito (LPNHE)

09:20 Welcome DUPhy/FADEX

Orateurs: Luca Scotto Lavina (LPNHE Paris), christine marquet

09:30 → 10:50 Direct Searches for Dark Matter: Direct Searches for Dark Matter I

Présidents de session: Klaus Eitel (Karlsruhe Institute of Technology), christine marquet

09:30 XENONnT WIMP searches

Orateur: Ananthakrishnan Ravindran (IMT Atlantique)

09:50 LZ Event Discussion Journal Club Style

Orateurs: Marco CIRELLI (LPTHE Jussieu CNRS), Dr Maxime PIERRE (NIKHEF)

10:10 Measurement of solar neutrinos at the keV scale by XENONnT and R&D efforts towards XLZD

Orateur: Alexey Elykov (Karlsruhe Institute of Technology (KIT))

10:30 Super Heavy Dark Matter and KM3Net

Orateur: Antonio Ambrosone (Gran Sasso Science Institute)

10:50 → 11:10 Coffee Break

11:10 → 12:30 Direct Searches for Dark Matter: Direct Searches for Dark Matter II

Présidents de session: Fabrice Hubaut (CPPM, Aix-Marseille Université, CNRS/IN2P3), Yajing Xing (LPNHE)

11:10 DAMIC

Orateur: Nicolás Avalos (LPNHE / CNRS)

11:30 Search for Dark Matter with a 0.2ng TES Detector

Orateur: Elmeri Rivasto (Deutsches Elektronen Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany)

Previous searches for Weakly Interacting Massive Particles (WIMPs) via nuclear recoils have significantly constrained the dark matter parameter space at masses above the GeV scale. Consequently, attention has recently shifted toward exploring light dark matter candidates, enabled by the rapid development of quantum technologies, particularly superconducting devices. Here, we present our recent proposal and initial experimental results on using a superconducting calorimeter, specifically a Transition Edge Sensor (TES), for direct dark matter detection. Whereas previous experiments have used TES as sensors attached to a larger target, our experiment employs the TES simultaneously as both the sensor and the target. This leaves us with a small target mass of 0.2 ng, but a low energy threshold of 0.3 eV making it sensitive to sub-MeV dark matter masses. The intrinsic energy resolution of the TES enables spectral information to be obtained without imposing assumptions about the surrounding backgrounds. Our 489-hour-long experiment sets new limits on both electron and nucleon scattering cross sections for dark matter in the MeV mass range. Finally, we discuss projections for further exploring the light dark matter parameter space using larger and more sensitive cryogenic detector setups.

11:50 MADMAX

Orateur: Katharine Dixon (CPPM Universite Aix-Marseille, IN2P3/CNRS)

12:10 babyIaxo

Orateur: Louis Helary (DESY)

12:30 → 14:00 Lunch

14:00 → 15:30 Phenomenology of Dark Matter: Phenomenology of Dark Matter I

Présidents de session: Adam FALKOWSKI (IJCLab), Felix Kahlhoefer (Karlsruhe Institute of Technology)

14:00 Lensing from amplitudes beyond GR

Orateur: Niccolò Feci (Université Paris-Saclay - IJCLab)

14:20 Probing Long-Lived Particle Production in Muon Decays

Orateur: Salvador URREA GONZALEZ

14:40 Direct and Indirect searches for Dark Matter-electron interactions in sub-GeV DM models

Orateur: Arpan Kar (LPTHE, Sorbonne University)

15:00 Monopole dark matter

Orateur: Giacomo Ferrante (Université Libre de Bruxelles (ULB))

15:30 → 16:00 Coffee Break

16:00 → 17:30 Phenomenology of Dark Matter: Computing and Machine Learning

Présidents de session: Christiane Schneide (DESY), Prof. Elena Bratkovskaya (GSI, Darmstadt & Frankfurt Uni.)

16:00 PUNCH4NFDI infrastructure and use cases

Orateur: Christiane Schneide (DESY)

16:20 Higgs Inversion with ML

Orateur: Timothe Bouy Gruaz

16:40 CNN applied to Calorimetry

Orateur: Xin XIA

19:30 → 21:30 Dinner at L'Escarmouche

Walk from Jussieu to the restaurant

jeu. 22 octobre

09:30 → 10:30 Detectors and Accelerators: Detectors and Accelerators I

Présidents de session: Roman Poeschl (IJCLab), Thomas Schörner (DESY)

09:30 SiW Testbeam Results

09:50 Optimization of the SiW Calorimeter for the Ship Detector

Orateur: Jesus Pedro MARQUEZ HERNANDEZ (IJCLAB (CNRS))

10:30 → 11:00 Coffee Break

11:00 → 12:30 Detectors and Accelerators: Detectors and Accelerators II

Présidents de session: Dr Nicolas Delerue (IJCLab, CNRS et Université Paris-Saclay), Roman Poeschl (IJCLab)

11:00 Lohengrin

Orateur: Cedric Breuning (Universität Bonn)

11:20 Inverse modelling of a laser-plasma accelerator

Orateur: Mykyta Lenivenko (IJCLab)

11:40 From PALLAS to DESY: Current Developments on Plasma Targets for Laser Plasma Accelerators

Orateur: Jana SERHAL (IJCLab)