Search for the Pair Production of Dark Particles X with KL0 →xX, X →γγ

KOTO Collaboration

doi:10.1103/PhysRevLett.130.111801

Search for the Pair Production of Dark Particles X with KL0 →xX, X →γγ

KOTO Collaboration

Department of Physics

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

We present the first search for the pair production of dark particles X via KL0→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(KL0→XX)<(1-4)×10-7 and B(KL0→XX)<(1-2)×10-6 at the 90% confidence level for the two mass regions, respectively.

Original language	English
Article number	111801
Journal	Physical review letters
Volume	130
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevLett.130.111801
Publication status	Published - 2023 Mar 17

Bibliographical note

Publisher Copyright:
© 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.130.111801

Cite this

@article{572d0c18779e427e87585df46fb1edcc,

title = "Search for the Pair Production of Dark Particles X with KL0 →xX, X →γγ",

abstract = "We present the first search for the pair production of dark particles X via KL0→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(KL0→XX)<(1-4)×10-7 and B(KL0→XX)<(1-2)×10-6 at the 90% confidence level for the two mass regions, respectively.",

author = "{KOTO Collaboration} and C. Lin and Ahn, {J. K.} and Choi, {J. M.} and Farrington, {M. S.} and M. Gonzalez and N. Grethen and Hsiung, {Y. B.} and T. Inagaki and I. Kamiji and Kim, {E. J.} and Kim, {J. L.} and Kim, {H. M.} and K. Kawata and A. Kitagawa and Komatsubara, {T. K.} and K. Kotera and Lee, {S. K.} and Lee, {J. W.} and Lim, {G. Y.} and Y. Luo and T. Matsumura and K. Nakagiri and H. Nanjo and T. Nomura and K. Ono and Redeker, {J. C.} and T. Sato and V. Sasse and T. Shibata and N. Shimizu and T. Shinkawa and S. Shinohara and K. Shiomi and R. Shiraishi and S. Suzuki and Y. Tajima and Tung, {Y. C.} and Wah, {Y. W.} and H. Watanabe and T. Wu and T. Yamanaka and Yoshida, {H. Y.}",

note = "Publisher Copyright: {\textcopyright} 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the {"}https://creativecommons.org/licenses/by/4.0/{"}Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.",

year = "2023",

month = mar,

day = "17",

doi = "10.1103/PhysRevLett.130.111801",

language = "English",

volume = "130",

journal = "Physical review letters",

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publisher = "American Physical Society",

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TY - JOUR

T1 - Search for the Pair Production of Dark Particles X with KL0 →xX, X →γγ

AU - KOTO Collaboration

AU - Lin, C.

AU - Ahn, J. K.

AU - Choi, J. M.

AU - Farrington, M. S.

AU - Gonzalez, M.

AU - Grethen, N.

AU - Hsiung, Y. B.

AU - Inagaki, T.

AU - Kamiji, I.

AU - Kim, E. J.

AU - Kim, J. L.

AU - Kim, H. M.

AU - Kawata, K.

AU - Kitagawa, A.

AU - Komatsubara, T. K.

AU - Kotera, K.

AU - Lee, S. K.

AU - Lee, J. W.

AU - Lim, G. Y.

AU - Luo, Y.

AU - Matsumura, T.

AU - Nakagiri, K.

AU - Nanjo, H.

AU - Nomura, T.

AU - Ono, K.

AU - Redeker, J. C.

AU - Sato, T.

AU - Sasse, V.

AU - Shibata, T.

AU - Shimizu, N.

AU - Shinkawa, T.

AU - Shinohara, S.

AU - Shiomi, K.

AU - Shiraishi, R.

AU - Suzuki, S.

AU - Tajima, Y.

AU - Tung, Y. C.

AU - Wah, Y. W.

AU - Watanabe, H.

AU - Wu, T.

AU - Yamanaka, T.

AU - Yoshida, H. Y.

N1 - Publisher Copyright: © 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.

PY - 2023/3/17

Y1 - 2023/3/17

N2 - We present the first search for the pair production of dark particles X via KL0→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(KL0→XX)<(1-4)×10-7 and B(KL0→XX)<(1-2)×10-6 at the 90% confidence level for the two mass regions, respectively.

AB - We present the first search for the pair production of dark particles X via KL0→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(KL0→XX)<(1-4)×10-7 and B(KL0→XX)<(1-2)×10-6 at the 90% confidence level for the two mass regions, respectively.

UR - http://www.scopus.com/inward/record.url?scp=85151389021&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.130.111801

DO - 10.1103/PhysRevLett.130.111801

M3 - Article

C2 - 37001070

AN - SCOPUS:85151389021

SN - 0031-9007

VL - 130

JO - Physical review letters

JF - Physical review letters

IS - 11

M1 - 111801

ER -

Search for the Pair Production of Dark Particles X with KL0 →xX, X →γγ

Abstract

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