Search for an axion-like particle in radiative J/ψ decays

M. Ablikim,M.N. Achasov,P. Adlarson,R. Aliberti, A. Amoroso,M.R. An, Q. An, Y. Bai, O. Bakina,R. Baldini Ferroli,I. Balossino, Y. Ban, V. Batozskaya, D. Becker, K. Begzsuren, N. Berger, M. Bertani, D. Bettoni, F. Bianchi,E. Bianco, J. Bloms,A. Bortone, I. Boyko, R.A. Briere,A. Brueggemann, H. Cai, X. Cai,A. Calcaterra,G.F. Cao, N. Cao,S.A. Cetin,J.F. Chang,T.T. Chang,W.L. Chang,G.R. Che, G. Chelkov,C. Chen,Chao Chen, G. Chen,H.S. Chen,M.L. Chen,S.J. Chen,S.M. Chen,T. Chen,X.R. Chen,X.T. Chen, Y.B. Chen, Y.Q. Chen, Z.J. Chen,W.S. Cheng,S.K. Choi, X. Chu,G. Cibinetto,S.C. Coen,F. Cossio, J.J. Cui, H.L. Dai,J.P. Dai, A. Dbeyssi,R.E. de Boer, D. Dedovich,Z.Y. Deng, A. Denig, I. Denysenko, M. Destefanis,F. De Mori, Y. Ding, J. Dong, L.Y. Dong, M.Y. Dong, X. Dong, S.X. Du, Z.H. Duan,P. Egorov, Y.L. Fan, J. Fang, S.S. Fang, W.X. Fang, Y. Fang,R. Farinelli, L. Fava, F. Feldbauer, G. Felici, C.Q. Feng,J.H. Feng,K. Fischer, M. Fritsch,C. Fritzsch, C.D. Fu, Y.W. Fu, H. Gao,Y.N. Gao,Yang Gao, S. Garbolino, I. Garzia,P.T. Ge, Z.W. Ge, C. Geng,E.M. Gersabeck, A. Gilman, K. Goetzen, L. Gong, W.X. Gong, W. Gradl, M. Greco, M.H. Gu, Y.T. Gu,C.Y. Guan, Z.L. Guan,A.Q. Guo, L.B. Guo, R.P. Guo, Y.P. Guo, A. Guskov,X.T. H., W.Y. Han,X.Q. Hao, F.A. Harris,K.K. He,K.L. He, F.H. Heinsius,C.H. Heinz,Y.K. Heng,C. Herold,T. Holtmann,P.C. Hong,G.Y. Hou,Y.R. Hou, Z.L. Hou, H.M. Hu, J.F. Hu, T. Hu, Y. Hu,G.S. Huang,K.X. Huang, L.Q. Huang,X.T. Huang, Y.P. Huang,T. Hussain,N. Hüsken, W. Imoehl, M. Irshad, J. Jackson, S. Jaeger,S. Janchiv,J.H. Jeong, Q. Ji, Q.P. Ji,X.B. Ji,X.L. Ji, Y.Y. Ji,Z.K. Jia,P.C. Jiang,S.S. Jiang,T.J. Jiang,X.S. Jiang, Y. Jiang, J.B. Jiao, Z. Jiao,S. Jin,Y. Jin,M.Q. Jing,T. Johansson, X. K.,S. Kabana, N. Kalantar-Nayestanaki, X.L. Kang, X.S. Kang,R. Kappert,M. Kavatsyuk, B.C. Ke, A. Khoukaz,R. Kiuchi, R. Kliemt, L. Koch,O.B. Kolcu, B. Kopf,M. Kuessner, A. Kupsc,W. Kühn,J.J. Lane,J.S. Lange, P. Larin,A. Lavania,L. Lavezzi,T.T. Lei,Z.H. Lei,H. Leithoff,M. Lellmann, T. Lenz,C. Li,C.H. Li,Cheng Li,D.M. Li,F. Li,G. Li,H. Li,H.B. Li,H.J. Li,H.N. Li,Hui Li,J.R. Li,J.S. Li,J.W. Li,Ke Li,L.J. Li,L.K. Li,Lei Li,M.H. Li,P.R. Li,S.X. Li,S.Y. Li,T. Li,W.D. Li,W.G. Li,X.H. Li,X.L. Li,Xiaoyu Li,Y.G. Li,Z.J. Li,Z.X. Li,Z.Y. Li,C. Liang,H. Liang, Y.F. Liang, Y.T. Liang, G.R. Liao,L.Z. Liao, J. Libby,A. Limphirat,D.X. Lin, T. Lin,B.X. Liu,B.J. Liu,C. Liu,C.X. Liu, D. Liu,F.H. Liu,Fang Liu, Feng Liu, G.M. Liu,H. Liu,H.B. Liu, H.M. Liu, Huanhuan Liu, Huihui Liu,J.B. Liu,J.L. Liu,J.Y. Liu,K. Liu,K.Y. Liu,Ke Liu,L. Liu,L.C. Liu,Lu Liu, M.H. Liu,P.L. Liu, Q. Liu,S.B. Liu,T. Liu,W.K. Liu,W.M. Liu,X. Liu,Y. Liu,Y.B. Liu, Z.A. Liu, Z.Q. Liu, X.C. Lou,F.X. Lu, H.J. Lu, J.G. Lu,X.L. Lu, Y. Lu, Y.P. Lu, Z.H. Lu, C.L. Luo, M.X. Luo,T. Luo, X.L. Luo, X.R. Lyu, Y.F. Lyu, F.C. Ma,H.L. Ma,J.L. Ma,L.L. Ma, M.M. Ma, Q.M. Ma, R.Q. Ma, R.T. Ma,X.Y. Ma,Y. Ma, F.E. Maas,M. Maggiora,S. Maldaner, S. Malde,A. Mangoni, Y.J. Mao, Z.P. Mao, S. Marcello, Z.X. Meng,J.G. Messchendorp,G. Mezzadri, H. 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Physics Letters B（2023）

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摘要

We search for an axion-like particle (ALP) a through the process ψ(3686)→π+π−J/ψ, J/ψ→γa, a→γγ in a data sample of (2.71±0.01)×109 ψ(3686) events collected by the BESIII detector. No significant ALP signal is observed over the expected background, and the upper limits on the branching fraction of the decay J/ψ→γa and the ALP-photon coupling constant gaγγ are set at 95% confidence level in the mass range of 0.165≤ma≤2.84GeV/c2. The limits on B(J/ψ→γa) range from 8.3×10−8 to 1.8×10−6 over the search region, and the constraints on the ALP-photon coupling are the most stringent to date for 0.165≤ma≤1.468GeV/c2.

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BESIII,Axion-like particle,Pseudo-Goldstone boson

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