| Title: |
Search for charged excited states of dark matter with KamLAND-Zen |
| Authors: |
Abe, S; Eizuka, M; Futagi, S; Gando, A; Gando, Y; Goto, S; Hachiya, T; Hata, K; Hosokawa, K; Ichimura, K; Ieki, S; Ikeda, H; Inoue, K; Ishidoshiro, K; Kamei, Y; Kawada, N; Kishimoto, Y; Koga, M; Kurasawa, M; Mitsui, T; Miyake, H; Morita, D; Nakahata, T; Nakajima, R; Nakamura, K; Nakamura, R; Nakane, J; Ozaki, H; Sakai, T; Shimizu, I; Shirai, J; Shiraishi, K; Shoji, R; Suzuki, A; Takeuchi, A; Tamae, K; Watanabe, H; Watanabe, K; Obara, S; Yoshida, S; Umehara, S; Fushimi, K; Kotera, K; Urano, Y; Ichikawa, A; Berger, BE; Fujikawa, BK; Learned, JG; Maricic, J; Axani, SN; Fu, Z; Smolsky, J; Winslow, LA; Efremenko, Y; Karwowski, HJ; Markoff, DM; Tornow, W; Dell'Oro, S; O'Donnell, T; Detwiler, JA; Enomoto, S; Decowski, MP; Weerman, KM; Grant, C; Li, A; Song, H |
| Source: |
Physics Letters B, vol 855 |
| Publisher Information: |
eScholarship, University of California |
| Publication Year: |
2024 |
| Collection: |
University of California: eScholarship |
| Subject Terms: |
5106 Nuclear and Plasma Physics (for-2020); 5107 Particle and High Energy Physics (for-2020); 51 Physical Sciences (for-2020); Dark matter; Organic liquid scintillator; Xenon; 0105 Mathematical Physics (for); 0201 Astronomical and Space Sciences (for); 0202 Atomic; Molecular; Nuclear; Particle and Plasma Physics (for); Nuclear & Particles Physics (science-metrix); 49 Mathematical sciences (for-2020) |
| Description: |
Particle dark matter could belong to a multiplet that includes an electrically charged state. WIMP dark matter ( χ 0 ) accompanied by a negatively charged excited state ( χ − ) with a small mass difference (e.g. < 20 MeV) can form a bound-state with a nucleus such as xenon. This bound-state formation is rare and the released energy is O ( 1 − 10 ) MeV depending on the nucleus, making large liquid scintillator detectors suitable for detection. We searched for bound-state formation events with xenon in two experimental phases of the KamLAND-Zen experiment, a xenon-doped liquid scintillator detector. No statistically significant events were observed. For a benchmark parameter set of WIMP mass m χ 0 = 1 TeV and mass difference Δ m = 17 MeV, we set the most stringent upper limits on the recombination cross section times velocity 〈 σ v 〉 and the decay-width of χ − to 9.2 × 10 − 30 c m 3 / s and 8.7 × 10 − 14 GeV, respectively at 90% confidence level. |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
unknown |
| Relation: |
qt4x41z73z; https://escholarship.org/uc/item/4x41z73z; https://escholarship.org/content/qt4x41z73z/qt4x41z73z.pdf |
| DOI: |
10.1016/j.physletb.2024.138846 |
| Availability: |
https://escholarship.org/uc/item/4x41z73z; https://escholarship.org/content/qt4x41z73z/qt4x41z73z.pdf; https://doi.org/10.1016/j.physletb.2024.138846 |
| Rights: |
public |
| Accession Number: |
edsbas.9E413F5A |
| Database: |
BASE |