Precision Analysis of the ^{136}Xe Two-Neutrino betabeta Spectrum in KamLAND-Zen and Its Impact on the Quenching of Nuclear Matrix Elements.
Gando A, Gando Y, Hachiya T, Ha Minh M, Hayashida S, Honda Y, Hosokawa K, Ikeda H, Inoue K, Ishidoshiro K, Kamei Y, Kamizawa K, Kinoshita T, Koga M, Matsuda S, Mitsui T, Nakamura K, Ono A, Ota N, Otsuka S, Ozaki H, Shibukawa Y, Shimizu I, Shirahata Y, Shirai J, Sato T, Soma K, Suzuki A, Takeuchi A, Tamae K, Ueshima K, Watanabe H, Chernyak D, Kozlov A, Obara S, Yoshida S, Takemoto Y, Umehara S, Fushimi K, Hirata S, Berger BE, Fujikawa BK, Learned JG, Maricic J, Winslow LA, Efremenko Y, Karwowski HJ, Markoff DM, Tornow W, O'Donnell T, Detwiler JA, Enomoto S, Decowski MP, Menéndez J, Dvornický R, Šimkovic F; KamLAND-Zen Collaboration.
Gando A, et al.
Phys Rev Lett. 2019 May 17;122(19):192501. doi: 10.1103/PhysRevLett.122.192501.
Phys Rev Lett. 2019.
PMID: 31144924
We present a precision analysis of the ^{136}Xe two-neutrino betabeta electron spectrum above 0.8 MeV, based on high-statistics data obtained with the KamLAND-Zen experiment. An improved formalism for the two-neutrino betabeta rate allows us to measure the ratio of the lea …
We present a precision analysis of the ^{136}Xe two-neutrino betabeta electron spectrum above 0.8 MeV, based on high-statistics data obtaine …