Phys.Rev.Lett. 122, 192501 (2019)

A.Gando, Y.Gando, T.Hachiya, M.Ha Minh, S.Hayashida, Y.Honda, K.Hosokawa, H.Ikeda, K.Inoue, K.Ishidoshiro, Y.Kamei, K.Kamizawa, T.Kinoshita, M.Koga, S.Matsuda, T.Mitsui, K.Nakamura, A.Ono, N.Ota, S.Otsuka, H.Ozaki, Y.Shibukawa, I.Shimizu, Y.Shirahata, J.Shirai, T.Sato, K.Soma, A.Suzuki, A.Takeuchi, K.Tamae, K.Ueshima, H.Watanabe, D.Chernyak, A.Kozlov, S.Obara, S.Yoshida, Y.Takemoto, S.Umehara, K.Fushimi, S.Hirata, B.E.Berger, B.K.Fujikawa, J.G.Learned, J.Maricic, L.A.Winslow, Y.Efremenko, H.J.Karwowski, D.M.Markoff, W.Tornow, T.O'Donnell, J.A.Detwiler, S.Enomoto, M.P.Decowski, J.Menendez, R.Dvornicky, F.Simkovic

Precision Analysis of the ¹³⁶Xe Two-Neutrino ββ Spectrum in KamLAND-Zen and Its Impact on the Quenching of Nuclear Matrix Elements

RADIOACTIVITY ¹³⁶Xe(2β^-); measured decay products, Eβ, Iβ; deduced nuclear matrix elements.

doi: 10.1103/PhysRevLett.122.192501