@article{951a11778e36496aa5afea7dc6e1a27e,
title = "Search for neutrinoless quadruple beta decay of 136Xe in XMASS-I",
abstract = "A search for the neutrinoless quadruple beta decay of 136Xe was conducted with the liquid-xenon detector XMASS-I using 327 kg ×800.0 days of the exposure. The pulse shape discrimination based on the scintillation decay time constant which distinguishes γ-rays including the signal and β-rays was used to enhance the search sensitivity. No significant signal excess was observed from the energy spectrum fitting with precise background evaluation, and we set a lower limit of the half life of 3.7 × 1024 years at 90% confidence level. This is the first experimental constraint of the neutrinoless quadruple beta decay of 136Xe.",
keywords = "Liquid xenon, Low background, Neutrino, Neutrinoless-quadruple beta decay",
author = "{XMASS Collaboration} and K. Abe and K. Hiraide and K. Ichimura and N. Kato and Y. Kishimoto and K. Kobayashi and M. Kobayashi and S. Moriyama and M. Nakahata and K. Sato and H. Sekiya and T. Suzuki and A. Takeda and S. Tasaka and M. Yamashita and Yang, {B. S.} and Kim, {N. Y.} and Kim, {Y. D.} and Kim, {Y. H.} and R. Ishii and Y. Itow and K. Kanzawa and K. Masuda and K. Martens and A. Mason and Y. Suzuki and K. Miuchi and Y. Takeuchi and Lee, {K. B.} and Lee, {M. K.} and Y. Fukuda and H. Ogawa and K. Nishijima and K. Fushimi and Xu, {B. D.} and S. Nakamura",
note = "Funding Information: We gratefully acknowledge the cooperation of the Kamioka Mining and Smelting Company. This work was supported by the Japanese Ministry of Education, Culture, Sports, Science and Technology , Grant-in-Aid for Scientific Research, JSPS KAKENHI Grant No. 18K03669 , 19GS0204 , 26104004 , and 19H05805 , the joint research program of the Institute for Cosmic Ray Research (ICRR), the University of Tokyo , and partially by the National Research Foundation of Korea Grant funded by the Korean Government ( NRF-2011-220-C00006 ), and the Brain Korea 21 FOUR Project grant funded by the Korean Ministry of Education . Funding Information: We gratefully acknowledge the cooperation of the Kamioka Mining and Smelting Company. This work was supported by the Japanese Ministry of Education, Culture, Sports, Science and Technology, Grant-in-Aid for Scientific Research, JSPS KAKENHI Grant No. 18K03669, 19GS0204, 26104004, and 19H05805, the joint research program of the Institute for Cosmic Ray Research (ICRR), the University of Tokyo, and partially by the National Research Foundation of Korea Grant funded by the Korean Government (NRF-2011-220-C00006), and the Brain Korea 21 FOUR Project grant funded by the Korean Ministry of Education. Publisher Copyright: {\textcopyright} 2022 The Author(s)",
year = "2022",
month = oct,
day = "10",
doi = "10.1016/j.physletb.2022.137355",
language = "English",
volume = "833",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier",
}