Two-neutrino ββ decay of 136Xe to the first excited 0+ state in 136Ba

Jokiniemi L.; Romeo B.; Brase C.; Kotila J.; Soriano P.; Schwenk A.; Menéndez J.
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 838, Num. 137689 (2023)
Article
10.1016/j.physletb.2023.137689