EPJ Web of Conferences (Jan 2019)

Check of the structure in photon pairs spectra at the invariant mass of about 38 MeV/c2

  • Abraamyan Khachik,
  • Austin Chris,
  • Baznat Mircea,
  • Gudima Konstantin,
  • Kozhin Mikhail,
  • Reznikov Sergey,
  • Sorin Alexander

DOI
https://doi.org/10.1051/epjconf/201920408004
Journal volume & issue
Vol. 204
p. 08004

Abstract

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Results of analysis of the effective mass spectra of photon pairs produced in dC, dCu and pC interactions at momenta of 2.75, 3.83 and 5.5 GeV/c per nucleon, respectively, are presented. A structure at effective mass of about 38 MeV/c2 is observed. The results of testing the observed signal are presented. The test results support the conclusion that the observed signal is the consequence of detection of a particle with a mass of about 38 MeV/c2 decaying into a pair of photons.