Check of the structure in photon pairs spectra at the invariant mass of about 38 MeV/c2
1 VBLHEP JINR, 141980 Dubna, Moscow region, Russia
2 Yerevan State University, 0025, Yerevan, Armenia
3 33 Collins Terrace, Maryport, Cumbria CA15 8DL, England
4 Institute of Applied Physics, MD-2028 Kishinev, Moldova
5 BLTP JINR, 141980 Dubna, Moscow region, Russia
* e-mail: firstname.lastname@example.org
Published online: 3 April 2019
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.
© The Authors, published by EDP Sciences, 2019
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