Development of a triple coincidence method of reaction, gamma-ray, and weak decay in the hypernuclear gamma-ray spectroscopy at J-PARCFumiya Oura, Manami Fujita, Yuji Ishikawa, Tatyana G. Rogers, Hirokazu Tamura, Mifuyu Ukai and Takeshi O. YamamotoEPJ Web Conf., 271 (2022) 11007DOI: https://doi.org/10.1051/epjconf/202227111007