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Title: Shedding light on X17: community report

Journal Article · · European Physical Journal. C, Particles and Fields (Online)
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  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Sapienza University, Rome (Italy); National Inst. of Nuclear Physics (INFN), Rome (Italy)
  3. Centre National de la Recherche Scientifique (CNRS) (France). Inst. National de Physique Nucleaire et de Physique des Particules (IN2P3)
  4. Barcelona Institute of Science and Technology (BIST)(Spain); University of Calabria (Italy)
  5. Johannes Gutenberg Univ., Mainz (Germany)
  6. Univ. of California, Los Angeles, CA (United States)
  7. Princeton Univ., NJ (United States)
  8. North Carolina A & T State Univ., Greensboro, NC (United States)
  9. Univ. of Birmingham (United Kingdom)
  10. National Inst. of Nuclear Physics (INFN), Rome (Italy)
  11. Zewail City of Science and Technology (Egypt)
  12. Univ. of Sofia (Bulgaria)
  13. Hungarian Academy of Sciences (ATOMKI) (Hungary)
  14. National Inst. of Nuclear Physics (INFN), Legnaro (Italy)
  15. Univ. of Washington, Seattle, WA (United States)
  16. Univ. of Southampton (United Kingdom)
  17. National Inst. of Nuclear Physics (INFN), Frascati (Italy)
  18. Czech Technical Univ., Prague (Czech Republic)
  19. Paul Scherrer Inst. (PSI) (Switzerland)
  20. Karlsruhe Inst. of Technology (KIT) (Germany)
  21. Sapienza University, Rome (Italy)
  22. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  23. Michigan State Univ., East Lansing, MI (United States)
+ Show Author Affiliations

The workshop “Shedding light on X17” brings together scientists looking for the existence of a possible new light particle, often referred to as X17. This hypothetical particle can explain the resonant structure observed at ~ 17 MeV in the invariant mass of electron-positron pairs, produced after excitation of nuclei such as 8Be and 4He by means of proton beams at the Atomki Laboratory in Debrecen. The purpose of the workshop is to discuss implications of this anomaly, in particular theoretical interpretations as well as present and future experiments aiming at confirming the result and/or at providing experimental evidence for its interpretation.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
Hungarian NKFI Foundation; Economic Development and Innovation Operation Programme (GINOP); Czech Science Foundation; National Science Foundation (NSF); Simons Investigator; Caixa Foundation; European Union’s Horizon 2020; Science, Technology and Innovation Funding Authority (STDF); USDOE Office of Science (SC), High Energy Physics (HEP); USDOE Laboratory Directed Research and Development (LDRD) Program; Federal Ministry of Education and Research (BMBF); Baden-Württemberg Ministry of Science; German Research Foundation (DFG); Italian Ministry of Foreign Affairs and International Cooperation (MAECI); Sapienza University
Grant/Contract Number:
AC52-06NA25396; AC05-00OR22725
OSTI ID:
1969836
Alternate ID(s):
OSTI ID: 1973806
Journal Information:
European Physical Journal. C, Particles and Fields (Online), Journal Name: European Physical Journal. C, Particles and Fields (Online) Journal Issue: 3 Vol. 83; ISSN 1434-6052
Publisher:
Springer NatureCopyright Statement
Country of Publication:
United States
Language:
English

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