Details

Autor(en) / Beteiligte

• Abe, K.
• Hiraide, K.
• Ichimura, K.
• Kato, N.
• Kishimoto, Y.
• Kobayashi, K.
• Kobayashi, M.
• Moriyama, S.
• Nakahata, M.
• Sato, K.
• Sekiya, H.
• Suzuki, T.
• Takeda, A.
• Tasaka, S.
• Yamashita, M.
• Yang, B.S.
• Kim, N.Y.
• Kim, Y.D.
• Kim, Y.H.
• Ishii, R.
• Itow, Y.
• Kanzawa, K.
• Masuda, K.
• Martens, K.
• Mason, A.
• Suzuki, Y.
• Miuchi, K.
• Takeuchi, Y.
• Lee, K.B.
• Lee, M.K.
• Fukuda, Y.
• Ogawa, H.
• Nishijima, K.
• Fushimi, K.
• Xu, B.D.
• Nakamura, S.

Titel

Search for neutrinoless quadruple beta decay of 136Xe in XMASS-I

Ist Teil von

• Physics letters. B, 2022-10, Vol.833, p.137355, Article 137355

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2022

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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.