Y
Y. Shirahata
Researcher at Tohoku University
Publications - 16
Citations - 1533
Y. Shirahata is an academic researcher from Tohoku University. The author has contributed to research in topics: Neutrino & Detector. The author has an hindex of 8, co-authored 15 publications receiving 1262 citations.
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Journal ArticleDOI
Search for Majorana Neutrinos Near the Inverted Mass Hierarchy Region with KamLAND-Zen.
A. Gando,Y. Gando,T. Hachiya,A. Hayashi,S. Hayashida,H. Ikeda,Kunio Inoue,Koji Ishidoshiro,Y. Karino,M. Koga,S. Matsuda,T. Mitsui,K. Nakamura,S. Obara,T. Oura,H. Ozaki,I. Shimizu,Y. Shirahata,J. Shirai,A. Suzuki,T. Takai,K. Tamae,Y. Teraoka,K. Ueshima,Hideki Watanabe,A. Kozlov,Y. Takemoto,S. Yoshida,Ken-Ichi Fushimi,T. I. Banks,B. E. Berger,B. K. Fujikawa,T. O'Donnell,Lindley Winslow,Yuri Efremenko,Hugon J Karwowski,D. M. Markoff,Werner Tornow,J. A. Detwiler,Sanshiro Enomoto,M. P. Decowski +40 more
TL;DR: An improved search for neutrinoless double-beta (0νββ) decay of ^{136}Xe in the KamLAND-Zen experiment is presented and a significant reduction of the xenon-loaded liquid scintillator contaminant identified in previous searches is achieved.
Journal ArticleDOI
Publisher's Note: Search for Majorana Neutrinos Near the Inverted Mass Hierarchy Region with KamLAND-Zen [Phys. Rev. Lett. 117, 082503 (2016)].
A. Gando,Y. Gando,T. Hachiya,A. Hayashi,S. Hayashida,H. Ikeda,Kunio Inoue,Koji Ishidoshiro,Y. Karino,M. Koga,S. Matsuda,T. Mitsui,K. Nakamura,S. Obara,T. Oura,H. Ozaki,I. Shimizu,Y. Shirahata,J. Shirai,A. Suzuki,T. Takai,K. Tamae,Y. Teraoka,K. Ueshima,Hideki Watanabe,A. Kozlov,Y. Takemoto,S. Yoshida,Ken-Ichi Fushimi,T. I. Banks,B. E. Berger,B. K. Fujikawa,T. O'Donnell,Lindley Winslow,Yu. Efremenko,Hugon J Karwowski,D. M. Markoff,Werner Tornow,J. A. Detwiler,Sanshiro Enomoto,M. P. Decowski +40 more
TL;DR: This corrects the article DOI: 10.1103/PhysRevLett.117.082503 to reflect that the paper was originally published in Physical Review Letters, not RevLett, rather than Science.
Journal ArticleDOI
Search for double-beta decay of 136Xe to excited states of 136Ba with the KamLAND-Zen experiment
K. Asakura,A. Gando,Y. Gando,T. Hachiya,S. Hayashida,H. Ikeda,Kunio Inoue,Kunio Inoue,Koji Ishidoshiro,T. Ishikawa,S. Ishio,M. Koga,M. Koga,S. Matsuda,T. Mitsui,D. Motoki,K. Nakamura,K. Nakamura,S. Obara,M. Otani,T. Oura,I. Shimizu,Y. Shirahata,J. Shirai,A. Suzuki,H. Tachibana,K. Tamae,K. Ueshima,Hideki Watanabe,B. D. Xu,Hidetomo Yoshida,A. Kozlov,Y. Takemoto,S. Yoshida,Ken-Ichi Fushimi,T. I. Banks,B. E. Berger,B. E. Berger,B. K. Fujikawa,B. K. Fujikawa,T. O'Donnell,Lindley Winslow,Yu. Efremenko,Yu. Efremenko,Yu. Efremenko,H. J. Karwowski,D. M. Markoff,Werner Tornow,J. A. Detwiler,J. A. Detwiler,Sanshiro Enomoto,Sanshiro Enomoto,M. P. Decowski,M. P. Decowski +53 more
TL;DR: In this article, the first experimental lower half-life limits for the transitions to the 0 1 + state of 136Xe for 0 β β and 2 β β β decay were reported.
Journal ArticleDOI
KamLAND Sensitivity to Neutrinos from Pre-Supernova Stars
K. Asakura,A. Gando,Y. Gando,T. Hachiya,S. Hayashida,H. Ikeda,Kunio Inoue,Kunio Inoue,Koji Ishidoshiro,T. Ishikawa,S. Ishio,M. Koga,M. Koga,S. Matsuda,T. Mitsui,D. Motoki,K. Nakamura,K. Nakamura,S. Obara,T. Oura,I. Shimizu,Y. Shirahata,J. Shirai,A. Suzuki,H. Tachibana,K. Tamae,K. Ueshima,Hideki Watanabe,B. D. Xu,A. Kozlov,Y. Takemoto,Sei Yoshida,Ken-Ichi Fushimi,A. Piepke,A. Piepke,T. I. Banks,T. I. Banks,B. E. Berger,B. E. Berger,B. K. Fujikawa,B. K. Fujikawa,T. O'Donnell,T. O'Donnell,John G. Learned,J. Maricic,S. Matsuno,M. Sakai,Lindley Winslow,Yu. Efremenko,Yu. Efremenko,H. J. Karwowski,H. J. Karwowski,D. M. Markoff,D. M. Markoff,Werner Tornow,Werner Tornow,Werner Tornow,J. A. Detwiler,Sanshiro Enomoto,Sanshiro Enomoto,M. P. Decowski,M. P. Decowski +61 more
TL;DR: In this paper, Asakura et al. showed that the kiloton-scale liquid scintillator detector KamLAND can detect pre-supernova neutrinos from a star with a mass of 25 M ǫ at a distance less than 690 pc with 3σ significance before the supernova.
Journal ArticleDOI
Precision Analysis of the ^{136}Xe Two-Neutrino ββ Spectrum in KamLAND-Zen and Its Impact on the Quenching of Nuclear Matrix Elements.
A. Gando,Y. Gando,T. Hachiya,M Ha Minh,S. Hayashida,Y. Honda,K. Hosokawa,H. Ikeda,Kunio Inoue,Kunio Inoue,Koji Ishidoshiro,Y. Kamei,K. Kamizawa,Toyohiko Kinoshita,M. Koga,M. Koga,S. Matsuda,T. Mitsui,K. Nakamura,K. Nakamura,Akira Ono,N. Ota,S. Otsuka,H. Ozaki,Y. Shibukawa,I. Shimizu,Y. Shirahata,J. Shirai,Tsugio Sato,K. Soma,A. Suzuki,A. Takeuchi,K. Tamae,K. Ueshima,Hideki Watanabe,D. Chernyak,A. Kozlov,S. Obara,S. Yoshida,Y Takemoto,S. Umehara,Ken-Ichi Fushimi,S. Hirata,B. E. Berger,B. E. Berger,B. K. Fujikawa,B. K. Fujikawa,John G. Learned,J. Maricic,Lindley Winslow,Yu. Efremenko,Yu. Efremenko,Hugon J Karwowski,D. M. Markoff,Werner Tornow,Werner Tornow,T. O'Donnell,J. A. Detwiler,J. A. Detwiler,Sanshiro Enomoto,Sanshiro Enomoto,M. P. Decowski,M. P. Decowski,Javier Fernandez Menendez,R Dvornický,Fedor Šimkovic,Fedor Šimkovic +66 more
TL;DR: An improved formalism for the two-neutrino ββ rate allows us to measure the ratio of the leading and subleading 2νββ nuclear matrix elements (NMEs) and reveals that predicted ξ_{31}^{2ν} values are sensitive to the quenching of NMEs and the competing contributions from low- and high-energy states in the intermediate nucleus.