Investigation of a light Dark Boson existence: The New JEDI project

¹ Grand Accélérateur National d’Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, 14076 Caen Cedex 05, France.
² Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405, Orsay, France.
³ School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA.
⁴ Nuclear Physics Institute ASCR, 250 68 Řež, Czech Republic.
⁵ Dipartimento di Fisica e Astronomia "E. Majorana", Univ. di Catania, Italy.
⁶ Laboratori Nazionali del Sud, INFN, Catania, 95123 Italy.
⁷ School of Physics, University of the Witwatersrand, Johannesburg 2050, South Africa.
⁸ SSC Laboratory, iThemba LABS, Somerset West 7129, South Africa.
⁹ Univ. Lyon, Univ. Claude Bernard Lyon 1, CNRS/IN2P3, IP2I Lyon, UMR 5822, F-69622, Villeurbanne, France.
¹⁰ APC, Université Paris Diderot, CNRS/IN2P3, CEA/IRFU, Observatoire de Paris, Sorbonne Paris Cité, 75205 Paris, France.
¹¹ Institut d’Astrophysique de Paris, CNRS UMR 7095, 98 bis Bd Arago, 75014 Paris, France.
¹² Sorbonne Université, Institut Lagrange de Paris, 98 bis Bd Arago, 75014 Paris, France.
¹³ Facoltà di Ingegneria ed Architettura, Kore University, Viale delle Olimpiadi, 1, I-94100 Enna, Italy.
¹⁴ Department of Physics, McGill University, Montréal, Quebec H3A 2T8, Canada.

^* New JEDI scientific coordinator / e-mail: bastin@ganil.fr
^** New JEDI co-spokesperson
^*** FASERED co-spokesperson

Published online: 3 February 2023

Abstract

Several experiments around the world are looking for a new particle, named Dark Boson, which may do the link between the Ordinary Matter (which forms basically stars, planets, interstellar gas...) and the Hidden Sectors of the Universe. This particle, if it exists, would act as the messenger of a new fundamental interaction of nature. In this paper, the underlying Dark Sectors theory will be introduced first. A non-exhaustive summary of experimental studies carried out to date and foreseen in the incoming years will be presented after,including the ⁸Be anomaly. The last section will provide a status of the New JEDI**** project which aims to investigate the existence or not of a Dark Boson in the MeV range.