TY - JOUR
T1 - Search for diphoton decays of an axionlike particle in radiative J/ψ decays
AU - Ablikim, M.
AU - Achasov, M. N.
AU - Adlarson, P.
AU - Ai, X. C.
AU - Kabana, S.
AU - The BESIII collaboration
N1 - Publisher Copyright:
© 2024 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 - 2024/8/1
Y1 - 2024/8/1
N2 - We search for the diphoton decay of a light pseudoscalar axionlike particle, a, in radiative J/ψ decays, using 1010 J/ψ events collected with the BESIII detector. We find no evidence of a signal and set upper limits at the 95% confidence level on the product branching fraction B(J/ψ→γa)×B(a→γγ) and the axionlike particle photon coupling constant gaγγ in the ranges of (3.7-48.5)×10-8 and (2.2-101.8)×10-4 GeV-1, respectively, for 0.18≤ma≤2.85 GeV/c2. These are the most stringent limits to date in this mass region.
AB - We search for the diphoton decay of a light pseudoscalar axionlike particle, a, in radiative J/ψ decays, using 1010 J/ψ events collected with the BESIII detector. We find no evidence of a signal and set upper limits at the 95% confidence level on the product branching fraction B(J/ψ→γa)×B(a→γγ) and the axionlike particle photon coupling constant gaγγ in the ranges of (3.7-48.5)×10-8 and (2.2-101.8)×10-4 GeV-1, respectively, for 0.18≤ma≤2.85 GeV/c2. These are the most stringent limits to date in this mass region.
UR - https://www.scopus.com/pages/publications/85200860122
U2 - 10.1103/PhysRevD.110.L031101
DO - 10.1103/PhysRevD.110.L031101
M3 - Article
AN - SCOPUS:85200860122
SN - 2470-0010
VL - 110
JO - Physical Review D
JF - Physical Review D
IS - 3
M1 - L031101
ER -