General AntiParticle Spectrometer

General AntiParticle Spectrometer (GAPS) is a NASA experiment that uses a high-altitude balloon flying in Antarctica to look for antideuteron particles from outer space cosmic rays,[1] in an effort to search for dark matter. Anti-deuterons could perhaps be produced by the annihilation of hypothetical weakly interacting massive particles (WIMPs).[2] The goal of the GAPS experiment is to capture anti-deuterons in a target material, to form an exotic atom in an excited state. The exotic atom would quickly decay, producing detectable X-rays energies with pion signature from nuclear annihilation.[3]

The GAPS ground test was successfully performed using a particle accelerator at KEK in 2004 and 2005. The first high-altitude balloon test was done in June 2012 with six Si(Li) detectors.

GAPS was launched from the Antarctic McMurdo Station on 16 December 2025.[4]

GAPS team

The team includes:[5]

See also

References

  1. ^ Aramaki, T.; Boggs, S.; Bufalino, S.; Dal, L.; Doetinchem, P. von; Donato, F.; Fornengo, N.; Fuke, H.; Grefe, M.; Hailey, C.; Hamilton, B.; Ibarra, A.; Mitchell, J.; Mognet, I.; Ong, R. A.; Pereira, R.; Perez, K.; Putze, A.; Raklev, A.; Salati, P.; Sasaki, M.; Tarle, G.; Urbano, A.; Vittino, A.; Wild, S.; Xue, W.; Yoshimura, K. (4 April 2016). "Review of the theoretical and experimental status of dark matter identification with cosmic-ray antideuterons". Physics Reports. 618: 1. arXiv:1505.07785. Bibcode:2016PhR...618....1A. doi:10.1016/j.physrep.2016.01.002 – via arXiv.org.
  2. ^ Donato, Fiorenza; Fornengo, Nicolao; Salati, Pierre (July 2000). "Antideuterons as a signature of supersymmetric dark matter". Physical Review D. 62 (4) 043003. arXiv:hep-ph/9904481. Bibcode:2000PhRvD..62d3003D. doi:10.1103/physrevd.62.043003. S2CID 54873919.
  3. ^ Aramaki, T.; Hailey, C. J.; Boggs, S. E.; Doetinchem, P. von; Fuke, H.; Mognet, S. I.; Ong, R. A.; Perez, K.; Zweerink, J. (13 August 2015). "Antideuteron Sensitivity for the GAPS Experiment". Astroparticle Physics. 74: 6. arXiv:1506.02513. Bibcode:2016APh....74....6A. doi:10.1016/j.astropartphys.2015.09.001 – via arXiv.org.
  4. ^ "First NASA Scientific Balloon Launches from Antarctica - NASA". 16 December 2025.
  5. ^ UCLA, Cosmic-ray Cosmic-ray antideuteron searches antideuteron searches, Feb. 2016

Further reading