Results from KamLAND-Zen

K. Asakura; A. Gando; Y. Gando; T. Hachiya; S. Hayashida; H. Ikeda; K. Inoue; K. Ishidoshiro; T. Ishikawa; S. Ishio; M. Koga; R. Matsuda; S. Matsuda; T. Mitsui; D. Motoki; K. Nakamura; S. Obara; Y. Oki; M. Otani; T. Oura; I. Shimizu; Y. Shirahata; J. Shirai; A. Suzuki; H. Tachibana; K. Tamae; K. Ueshima; H. Watanabe; B. D. Xu; Y. Yamauchi; H. Yoshida; A. Kozlov; Y. Takemoto; S. Yoshida; K. Fushimi; T. I. Banks; S. J. Freedman; B. K. Fujikawa; T. O'donnell; L. A. Winslow; B. E. Berger; Y. Efremenko; H. J. Karwowski; D. M. Markoff; W. Tornow; J. A. Detwiler; S. Enomoto; M. P. Decowski

doi:10.1063/1.4915593

Results from KamLAND-Zen

K. Asakura, A. Gando, Y. Gando, T. Hachiya, S. Hayashida, H. Ikeda, K. Inoue, K. Ishidoshiro, T. Ishikawa, S. Ishio, M. Koga, R. Matsuda, S. Matsuda, T. Mitsui, D. Motoki, K. Nakamura, S. Obara, Y. Oki, M. Otani, T. OuraI. Shimizu, Y. Shirahata, J. Shirai, A. Suzuki, H. Tachibana, K. Tamae, K. Ueshima, H. Watanabe, B. D. Xu, Y. Yamauchi, H. Yoshida, A. Kozlov, Y. Takemoto, S. Yoshida, K. Fushimi, T. I. Banks, S. J. Freedman, B. K. Fujikawa, T. O'donnell, L. A. Winslow, B. E. Berger, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, J. A. Detwiler, S. Enomoto, M. P. Decowski

Research Center for Neutrino Science (RCNS)

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

33 Citations (Scopus)

Abstract

KamLAND-Zen reports on a preliminary search for neutrinoless double-beta decay with ¹³⁶Xe based on 114.8 live-days after the purification of the xenon loaded liquid scintillator. In this data, the problematic ^110mAg background peak identified in previous searches is reduced by more than a factor of 10. By combining the KamLAND-Zen pre- and post-purification data, we obtain a preliminary lower limit on the 0νββ decay half-life of T1/20ν>2.6×1025 yr at 90% C.L. The search sensitivity will be enhanced with additional low background data after the purification. Prospects for further improvements with future KamLAND-Zen upgrades are also presented.

Original language	English
Title of host publication	XXVI International Conference on Neutrino Physics and Astrophysics, Neutrino 2014
Editors	Ed Kearns, Gary Feldman
Publisher	American Institute of Physics Inc.
ISBN (Electronic)	9780735413139
DOIs	https://doi.org/10.1063/1.4915593
Publication status	Published - 2015 Jul 15
Event	26th International Conference on Neutrino Physics and Astrophysics, Neutrino 2014 - Boston, United States Duration: 2014 Jun 2 → 2014 Jun 7

Publication series

Name	AIP Conference Proceedings
Volume	1666
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	26th International Conference on Neutrino Physics and Astrophysics, Neutrino 2014
Country/Territory	United States
City	Boston
Period	14/6/2 → 14/6/7

Keywords

Double beta decay
Majorana neutrino mass

Access to Document

10.1063/1.4915593

Cite this

Asakura, K., Gando, A., Gando, Y., Hachiya, T., Hayashida, S., Ikeda, H., Inoue, K., Ishidoshiro, K., Ishikawa, T., Ishio, S., Koga, M., Matsuda, R., Matsuda, S., Mitsui, T., Motoki, D., Nakamura, K., Obara, S., Oki, Y., Otani, M., ... Decowski, M. P. (2015). Results from KamLAND-Zen. In E. Kearns, & G. Feldman (Eds.), XXVI International Conference on Neutrino Physics and Astrophysics, Neutrino 2014 Article 170003 (AIP Conference Proceedings; Vol. 1666). American Institute of Physics Inc.. https://doi.org/10.1063/1.4915593

@inproceedings{a1afa91986ca47ca9e5b958e33ad39bd,

title = "Results from KamLAND-Zen",

abstract = "KamLAND-Zen reports on a preliminary search for neutrinoless double-beta decay with 136Xe based on 114.8 live-days after the purification of the xenon loaded liquid scintillator. In this data, the problematic 110mAg background peak identified in previous searches is reduced by more than a factor of 10. By combining the KamLAND-Zen pre- and post-purification data, we obtain a preliminary lower limit on the 0νββ decay half-life of T1/20ν>2.6×1025 yr at 90% C.L. The search sensitivity will be enhanced with additional low background data after the purification. Prospects for further improvements with future KamLAND-Zen upgrades are also presented.",

keywords = "Double beta decay, Majorana neutrino mass",

author = "K. Asakura and A. Gando and Y. Gando and T. Hachiya and S. Hayashida and H. Ikeda and K. Inoue and K. Ishidoshiro and T. Ishikawa and S. Ishio and M. Koga and R. Matsuda and S. Matsuda and T. Mitsui and D. Motoki and K. Nakamura and S. Obara and Y. Oki and M. Otani and T. Oura and I. Shimizu and Y. Shirahata and J. Shirai and A. Suzuki and H. Tachibana and K. Tamae and K. Ueshima and H. Watanabe and Xu, {B. D.} and Y. Yamauchi and H. Yoshida and A. Kozlov and Y. Takemoto and S. Yoshida and K. Fushimi and Banks, {T. I.} and Freedman, {S. J.} and Fujikawa, {B. K.} and T. O'donnell and Winslow, {L. A.} and Berger, {B. E.} and Y. Efremenko and Karwowski, {H. J.} and Markoff, {D. M.} and W. Tornow and Detwiler, {J. A.} and S. Enomoto and Decowski, {M. P.}",

note = "Publisher Copyright: {\textcopyright} 2015 AIP Publishing LLC.; 26th International Conference on Neutrino Physics and Astrophysics, Neutrino 2014 ; Conference date: 02-06-2014 Through 07-06-2014",

year = "2015",

month = jul,

day = "15",

doi = "10.1063/1.4915593",

language = "English",

series = "AIP Conference Proceedings",

publisher = "American Institute of Physics Inc.",

editor = "Ed Kearns and Gary Feldman",

booktitle = "XXVI International Conference on Neutrino Physics and Astrophysics, Neutrino 2014",

}

Asakura, K, Gando, A, Gando, Y, Hachiya, T, Hayashida, S, Ikeda, H , Inoue, K , Ishidoshiro, K, Ishikawa, T, Ishio, S, Koga, M, Matsuda, R, Matsuda, S, Mitsui, T, Motoki, D, Nakamura, K, Obara, S, Oki, Y, Otani, M, Oura, T, Shimizu, I, Shirahata, Y, Shirai, J, Suzuki, A, Tachibana, H, Tamae, K, Ueshima, K, Watanabe, H, Xu, BD, Yamauchi, Y, Yoshida, H, Kozlov, A, Takemoto, Y, Yoshida, S, Fushimi, K, Banks, TI, Freedman, SJ, Fujikawa, BK, O'donnell, T, Winslow, LA, Berger, BE, Efremenko, Y, Karwowski, HJ, Markoff, DM, Tornow, W, Detwiler, JA, Enomoto, S & Decowski, MP 2015, Results from KamLAND-Zen. in E Kearns & G Feldman (eds), XXVI International Conference on Neutrino Physics and Astrophysics, Neutrino 2014., 170003, AIP Conference Proceedings, vol. 1666, American Institute of Physics Inc., 26th International Conference on Neutrino Physics and Astrophysics, Neutrino 2014, Boston, United States, 14/6/2. https://doi.org/10.1063/1.4915593

Results from KamLAND-Zen. / Asakura, K.; Gando, A.; Gando, Y. et al.
XXVI International Conference on Neutrino Physics and Astrophysics, Neutrino 2014. ed. / Ed Kearns; Gary Feldman. American Institute of Physics Inc., 2015. 170003 (AIP Conference Proceedings; Vol. 1666).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Results from KamLAND-Zen

AU - Asakura, K.

AU - Gando, A.

AU - Gando, Y.

AU - Hachiya, T.

AU - Hayashida, S.

AU - Ikeda, H.

AU - Inoue, K.

AU - Ishidoshiro, K.

AU - Ishikawa, T.

AU - Ishio, S.

AU - Koga, M.

AU - Matsuda, R.

AU - Matsuda, S.

AU - Mitsui, T.

AU - Motoki, D.

AU - Nakamura, K.

AU - Obara, S.

AU - Oki, Y.

AU - Otani, M.

AU - Oura, T.

AU - Shimizu, I.

AU - Shirahata, Y.

AU - Shirai, J.

AU - Suzuki, A.

AU - Tachibana, H.

AU - Tamae, K.

AU - Ueshima, K.

AU - Watanabe, H.

AU - Xu, B. D.

AU - Yamauchi, Y.

AU - Yoshida, H.

AU - Kozlov, A.

AU - Takemoto, Y.

AU - Yoshida, S.

AU - Fushimi, K.

AU - Banks, T. I.

AU - Freedman, S. J.

AU - Fujikawa, B. K.

AU - O'donnell, T.

AU - Winslow, L. A.

AU - Berger, B. E.

AU - Efremenko, Y.

AU - Karwowski, H. J.

AU - Markoff, D. M.

AU - Tornow, W.

AU - Detwiler, J. A.

AU - Enomoto, S.

AU - Decowski, M. P.

PY - 2015/7/15

Y1 - 2015/7/15

N2 - KamLAND-Zen reports on a preliminary search for neutrinoless double-beta decay with 136Xe based on 114.8 live-days after the purification of the xenon loaded liquid scintillator. In this data, the problematic 110mAg background peak identified in previous searches is reduced by more than a factor of 10. By combining the KamLAND-Zen pre- and post-purification data, we obtain a preliminary lower limit on the 0νββ decay half-life of T1/20ν>2.6×1025 yr at 90% C.L. The search sensitivity will be enhanced with additional low background data after the purification. Prospects for further improvements with future KamLAND-Zen upgrades are also presented.

AB - KamLAND-Zen reports on a preliminary search for neutrinoless double-beta decay with 136Xe based on 114.8 live-days after the purification of the xenon loaded liquid scintillator. In this data, the problematic 110mAg background peak identified in previous searches is reduced by more than a factor of 10. By combining the KamLAND-Zen pre- and post-purification data, we obtain a preliminary lower limit on the 0νββ decay half-life of T1/20ν>2.6×1025 yr at 90% C.L. The search sensitivity will be enhanced with additional low background data after the purification. Prospects for further improvements with future KamLAND-Zen upgrades are also presented.

KW - Double beta decay

KW - Majorana neutrino mass

UR - http://www.scopus.com/inward/record.url?scp=85006228134&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85006228134&partnerID=8YFLogxK

U2 - 10.1063/1.4915593

DO - 10.1063/1.4915593

M3 - Conference contribution

AN - SCOPUS:85006228134

T3 - AIP Conference Proceedings

BT - XXVI International Conference on Neutrino Physics and Astrophysics, Neutrino 2014

A2 - Kearns, Ed

A2 - Feldman, Gary

PB - American Institute of Physics Inc.

T2 - 26th International Conference on Neutrino Physics and Astrophysics, Neutrino 2014

Y2 - 2 June 2014 through 7 June 2014

ER -

Results from KamLAND-Zen

Abstract

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Keywords

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