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Search for the Pair Production of Dark Particles X with K0L? XX, X ? ??
- Lin, C.;
- Ahn, J. K.;
- Choi, J. M.;
- Farrington, M. S.;
- Gonzalez, M.;
- 외 37명
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4초록
We present the first search for the pair production of dark particles X via K0L -> XX with X decaying into two photons using the data collected by the KOTO experiment. No signal was observed in the mass range of 40-110 MeV/c2 and 210-240 MeV/c2. This sets upper limits on the branching fractions as B(K0L -> XX) < (1-4) x 10-7 and B(K0L -> XX) < (1-2) x 10-6 at the 90% confidence level for the two mass regions, respectively.
- 제목
- Search for the Pair Production of Dark Particles X with K0L? XX, X ? ??
- 저자
- Lin, C.; Ahn, J. K.; Choi, J. M.; Farrington, M. S.; Gonzalez, M.; Grethen, N.; Hsiung, Y. B.; Inagaki, T.; Kamiji, I.; Kim, E. J.; Kim, J. L.; Kim, H. M.; Kawata, K.; Kitagawa, A.; Komatsubara, T. K.; Kotera, K.; Lee, S. K.; Lee, J. W.; Lim, G. Y.; Luo, Y.; Matsumura, T.; Nagkiri, K.; Nanjo, H.; Nomura, T.; Ono, K.; Redeker, J. C.; Sato, T.; Sasse, V.; Shibata, T.; Shimnizu, N.; Shinkawa, T.; Shinohara, S.; Shiomi, K.; Shiraishi, R.; Suzuki, S.; Tajima, Y.; Tung, Y. -C.; Wah, Y. W.; Watnabe, H.; Wu, T.; Yamanaka, T.; Yoshida, H. Y.
- 발행일
- 2023-03-17
- 유형
- Article
- 권
- 130
- 호
- 11
- 언어
- ENG
- 출판사
- AMER PHYSICAL SOC
- 발행국가
- 미국
- ISSN
- E 1079-7114
P 0031-9007