Scholars@Duke publication: Search for double-beta decay of 136Xe to excited states of 136Ba with the KamLAND-Zen experiment

Search for double-beta decay of 136Xe to excited states of 136Ba with the KamLAND-Zen experiment

Publication , Journal Article

Asakura, K; Gando, A; Gando, Y; Hachiya, T; Hayashida, S; Ikeda, H; Inoue, K; Ishidoshiro, K; Ishikawa, T; Ishio, S; Koga, M; Matsuda, S ...

Published in: Nuclear Physics A

February 1, 2016

Published version (DOI)

A search for double-beta decays of ¹³⁶Xe to excited states of ¹³⁶Ba has been performed with the first phase data set of the KamLAND-Zen experiment. The 01⁺, 21⁺ and 22⁺ transitions of 0νββ decay were evaluated in an exposure of 89.5 kg⋅yr of ¹³⁶Xe, while the same transitions of 2νββ decay were evaluated in an exposure of 61.8 kg⋅yr. No excess over background was found for all decay modes. The lower half-life limits of the 21⁺ state transitions of 0νββ and 2νββ decay were improved to T1/20ν(0⁺→21⁺)>2.6×10²⁵ yr and T1/2^2ν(0⁺→21⁺)>4.6×10²³ yr (90% C.L.), respectively. We report on the first experimental lower half-life limits for the transitions to the 01⁺ state of ¹³⁶Xe for 0νββ and 2νββ decay. They are T1/2^0ν(0⁺→01⁺)>2.4×1025 yr and T1/2^2ν(0⁺→01⁺)>8.3×1023 yr (90% C.L.). The transitions to the 22⁺ states are also evaluated for the first time to be T1/2^0ν(0⁺→22⁺)>2.6×10²⁵ yr and T1/2^2ν(0⁺→22⁺)>9.0×10²³ yr (90% C.L.). These results are compared to recent theoretical predictions.

Duke Scholars

Author Diane M Markoff Physics

Author Werner Tornow Physics

Published In

Nuclear Physics A

DOI

10.1016/j.nuclphysa.2015.11.011

ISSN

0375-9474

Publication Date

February 1, 2016

Volume

946

Start / End Page

171 / 181

Related Subject Headings

Nuclear & Particles Physics
5107 Particle and high energy physics
5106 Nuclear and plasma physics
5101 Astronomical sciences
0206 Quantum Physics
0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
0201 Astronomical and Space Sciences

Citation

APA

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ICMJE

MLA

NLM

Asakura, K., Gando, A., Gando, Y., Hachiya, T., Hayashida, S., Ikeda, H., … Decowski, M. P. (2016). Search for double-beta decay of 136Xe to excited states of 136Ba with the KamLAND-Zen experiment. Nuclear Physics A, 946, 171–181. https://doi.org/10.1016/j.nuclphysa.2015.11.011

Asakura, K., A. Gando, Y. Gando, T. Hachiya, S. Hayashida, H. Ikeda, K. Inoue, et al. “Search for double-beta decay of 136Xe to excited states of 136Ba with the KamLAND-Zen experiment.” Nuclear Physics A 946 (February 1, 2016): 171–81. https://doi.org/10.1016/j.nuclphysa.2015.11.011.

Asakura K, Gando A, Gando Y, Hachiya T, Hayashida S, Ikeda H, et al. Search for double-beta decay of 136Xe to excited states of 136Ba with the KamLAND-Zen experiment. Nuclear Physics A. 2016 Feb 1;946:171–81.

Asakura, K., et al. “Search for double-beta decay of 136Xe to excited states of 136Ba with the KamLAND-Zen experiment.” Nuclear Physics A, vol. 946, Feb. 2016, pp. 171–81. Scopus, doi:10.1016/j.nuclphysa.2015.11.011.

Asakura K, Gando A, Gando Y, Hachiya T, Hayashida S, Ikeda H, Inoue K, Ishidoshiro K, Ishikawa T, Ishio S, Koga M, Matsuda S, Mitsui T, Motoki D, Nakamura K, Obara S, Otani M, Oura T, Shimizu I, Shirahata Y, Shirai J, Suzuki A, Tachibana H, Tamae K, Ueshima K, Watanabe H, Xu BD, Yoshida H, Kozlov A, Takemoto Y, Yoshida S, Fushimi K, Banks TI, Berger BE, Fujikawa BK, O’Donnell T, Winslow LA, Efremenko Y, Karwowski HJ, Markoff DM, Tornow W, Detwiler JA, Enomoto S, Decowski MP. Search for double-beta decay of 136Xe to excited states of 136Ba with the KamLAND-Zen experiment. Nuclear Physics A. 2016 Feb 1;946:171–181.

Published In

Nuclear Physics A

DOI

10.1016/j.nuclphysa.2015.11.011

ISSN

0375-9474

Publication Date

February 1, 2016

Volume

946

Start / End Page

171 / 181

Related Subject Headings

Nuclear & Particles Physics
5107 Particle and high energy physics
5106 Nuclear and plasma physics
5101 Astronomical sciences
0206 Quantum Physics
0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
0201 Astronomical and Space Sciences