Abstract

• In this research, a single- hypernucleus which is detected in J-PARC E07 nuclear emulsion experiment is analyzed by relativistic kinematics. The ranges and position angles of charged particle tracks are measured in nuclear emulsion. Neutral particle emission in the decay products is checked by calculating the dot product of direction vector of hyperfragment and total momentum of decay products. The possible decay modes of single- hypernucleus are considered and Q-values are calculated. Total energies of each decay product are obtained by range-energy relation and momentum conservation. The acceptable decay modes are chosen by comparing Q-values and total energy. Then, mass of possible hypernuclei is calculated by mass-energy relation. According to our analysis, a single- hypernucleus is uniquely identified as N 15  which follows the N Be He d n 3 2 9 4 15      decay mode with the mass 14141.580.19 MeV/c2 and binding energy 14.310.19 MeV.