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Search for an axion-like particle in B → K(*)a(→ γγ) decays at Belle

Publication ,  Journal Article
Adachi, I; Aggarwal, L; Ahmed, H; Ahn, Y; Aihara, H; Akopov, N; Alghamdi, S; Alhakami, M; Aloisio, A; Althubiti, N; Amos, K; Angelsmark, M ...
Published in: Journal of High Energy Physics
December 15, 2025

We report a search for an axion-like particle in → decays using data collected with the Belle detector at the KEKB asymmetric-energy electron-positron collider. The search is based on a 711 fb data sample collected at the Υ(4 ) resonance energy, corresponding to a sample of 772 × 10 Υ(4 ) events. In this study, we search for the decay of the axion-like particle into a pair of photons, → . We scan the two-photon invariant mass in the range 0 16 GeV–4 50 GeV for the modes and 0 16 GeV–4 20 GeV for the modes. No significant signal is observed in any of the modes, and 90% confidence level upper limits are established on the coupling to the boson, , as a function of mass. The limits range from 3 10 GeV to 3 10 GeV , improving the current constraints on by a factor of two over the most stringent previous experimental results.

Duke Scholars

Published In

Journal of High Energy Physics

DOI

EISSN

1029-8479

Publication Date

December 15, 2025

Volume

2025

Issue

12

Publisher

Springer Science and Business Media LLC

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5106 Nuclear and plasma physics
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0105 Mathematical Physics
 

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Adachi, I., Aggarwal, L., Ahmed, H., Ahn, Y., Aihara, H., Akopov, N., … Žlebčík, R. (2025). Search for an axion-like particle in B → K(*)a(→ γγ) decays at Belle. Journal of High Energy Physics, 2025(12). https://doi.org/10.1007/jhep12(2025)109
Adachi, I., L. Aggarwal, H. Ahmed, Y. Ahn, H. Aihara, N. Akopov, S. Alghamdi, et al. “Search for an axion-like particle in B → K(*)a(→ γγ) decays at Belle.” Journal of High Energy Physics 2025, no. 12 (December 15, 2025). https://doi.org/10.1007/jhep12(2025)109.
Adachi I, Aggarwal L, Ahmed H, Ahn Y, Aihara H, Akopov N, et al. Search for an axion-like particle in B → K(*)a(→ γγ) decays at Belle. Journal of High Energy Physics. 2025 Dec 15;2025(12).
Adachi, I., et al. “Search for an axion-like particle in B → K(*)a(→ γγ) decays at Belle.” Journal of High Energy Physics, vol. 2025, no. 12, Springer Science and Business Media LLC, Dec. 2025. Crossref, doi:10.1007/jhep12(2025)109.
Adachi I, Aggarwal L, Ahmed H, Ahn Y, Aihara H, Akopov N, Alghamdi S, Alhakami M, Aloisio A, Althubiti N, Amos K, Angelsmark M, Anh Ky N, Antonioli C, Asner DM, Atmacan H, Aushev T, Aushev V, Aversano M, Ayad R, Babu V, Bae H, Baghel NK, Bahinipati S, Bambade P, Banerjee S, Bansal S, Barrett M, Bartl M, Baudot J, Baur A, Beaubien A, Becherer F, Becker J, Bennett JV, Bernlochner FU, Bertacchi V, Bertemes M, Bertholet E, Bessner M, Bettarini S, Bhuyan B, Bianchi F, Bilka T, Biswas D, Bobrov A, Bodrov D, Bondar A, Bonvicini G, Borah J, Boschetti A, Bozek A, Bračko M, Branchini P, Browder TE, Budano A, Bussino S, Campagna Q, Campajola M, Cao L, Casarosa G, Cecchi C, Chang M-C, Cheema P, Chen L, Cheon BG, Chilikin K, Chin J, Chirapatpimol K, Cho H-E, Cho K, Cho S-J, Choi S-K, Choudhury S, Cochran J, Consigny I, Corona L, Cui JX, De La Cruz-Burelo E, De La Motte SA, De Nardo G, De Pietro G, de Sangro R, Destefanis M, Dey S, Di Canto A, Dingfelder J, Doležal Z, Domínguez Jiménez I, Dong TV, Dugic K, Dujany G, Ecker P, Eppelt J, Farkas R, Feichtinger P, Ferber T, Fillinger T, Finck C, Finocchiaro G, Fodor A, Forti F, Frey A, Fulsom BG, Gabrielli A, Gale A, Garcia-Hernandez M, Garg R, Gaudino G, Gaur V, Gautam V, Gaz A, Gellrich A, Ghevondyan G, Ghosh D, Ghumaryan H, Giakoustidis G, Giordano R, Giri A, Gironella Gironell P, Gobbo B, Godang R, Gogota O, Goldenzweig P, Graziani E, Greenwald D, Gruberová Z, Guan Y, Gudkova K, Haide I, Han Y, Hara T, Hayasaka K, Hayashii H, Hazra S, Hearty C, Hedges MT, Heine G, Heredia de la Cruz I, Hernández Villanueva M, Higuchi T, Hoek M, Hohmann M, Hoppe R, Horak P, Hsu C-L, Humair T, Iijima T, Inami K, Ipsita N, Ishikawa A, Itoh R, Iwasaki M, Jackson P, Jacobs WW, Jang E-J, Ji QP, Jia S, Jin Y, Johnson A, Joo KK, Junkerkalefeld H, Kandra J, Kang KH, Karyan G, Kawasaki T, Keil F, Ketter C, Khan M, Kiesling C, Kim C, Kim C-H, Kim DY, Kim J-Y, Kim K-H, Kim YJ, Kim Y-K, Kindo H, Kinoshita K, Kodyš P, Koga T, Kohani S, Kojima K, Korobov A, Korpar S, Kovalenko E, Križan P, Krokovny P, Kuhr T, Kulii Y, Kumar D, Kumar R, Kumara K, Kunigo T, Kuzmin A, Kwon Y-J, Lacaprara S, Lalwani K, Lam T, Lange JS, Lau TS, Laurenza M, Leboucher R, Le Diberder FR, Lee MJ, Lemettais C, Leo P, Lewis PM, Li C, Li H-J, Li LK, Li QM, Li WZ, Li Y, Li YB, Liao YP, Libby J, Lin J, Lin S, Liu MH, Liu QY, Liu Y, Liu ZQ, Liventsev D, Longo S, Lueck T, Lyu C, Ma Y, Madaan C, Maggiora M, Maharana SP, Maiti R, Mancinelli G, Manfredi R, Manoni E, Mantovano M, Marcantonio D, Marcello S, Marinas C, Martellini C, Martens A, Martinov T, Massaccesi L, Masuda M, Matvienko D, Maurya SK, Maushart M, McKenna JA, Mehta R, Meier F, Meleshko D, Merola M, Miller C, Mirra M, Mitra S, Miyabayashi K, Miyake H, Mizuk R, Mohanty GB, Mondal S, Moneta S, Moreira de Carvalho AL, Moser H-G, Mussa R, Nakamura I, Nakao M, Nakazawa Y, Naruki M, Natkaniec Z, Natochii A, Nayak M, Neu M, Niiyama M, Nishida S, Ogawa S, Ono H, Pakhlova G, Pardi S, Parham K, Park H, Park J, Park K, Park S-H, Paschen B, Passeri A, Patra S, Paul S, Pedlar TK, Peruzzi I, Peschke R, Pestotnik R, Piccolo M, Piilonen LE, Podesta-Lerma PLM, Podobnik T, Pokharel S, Prakash A, Praz C, Prell S, Prencipe E, Prim MT, Privalov S, Purwar H, Rados P, Raeuber G, Raiz S, Ravindran K, Rehman JU, Reif M, Reiter S, Remnev M, Reuter L, Ricalde Herrmann D, Ripp-Baudot I, Rizzo G, Robertson SH, Roney JM, Rostomyan A, Rout N, Salutari L, Sanders DA, Sandilya S, Santelj L, Savinov V, Scavino B, Schmitz J, Schneider S, Schnell G, Schnepf M, Schwanda C, Seino Y, Selce A, Senyo K, Serrano J, Sevior ME, Sfienti C, Shan W, Sharma G, Shen CP, Shi XD, Shillington T, Shimasaki T, Shiu J-G, Shtol D, Sibidanov A, Simon F, Singh JB, Skorupa J, Sobotzik M, Soffer A, Sokolov A, Solovieva E, Spataro S, Spruck B, Starič M, Stavroulakis P, Stefkova S, Stroili R, Sue Y, Sumihama M, Sumisawa K, Suwonjandee N, Svidras H, Takizawa M, Tamponi U, Tanida K, Tenchini F, Testa F, Thaller A, Tittel O, Tiwary R, Torassa E, Trabelsi K, Trantou FF, Tsaklidis I, Ueda I, Uglov T, Unger K, Unno Y, Uno K, Uno S, Urquijo P, Ushiroda Y, Vahsen SE, van Tonder R, Varvell KE, Veronesi M, Vinokurova A, Vismaya VS, Vitale L, Vobbilisetti V, Volpe R, Vossen A, Waheed E, Wakai M, Wallner S, Wang M-Z, Warburton A, Watanuki S, Wessel C, Won E, Xu XP, Yabsley BD, Yamada S, Yan W, Yan WC, Yang SB, Yelton J, Yi K, Yin JH, Yoshihara K, Yuan CZ, Yuan J, Zani L, Zeng F, Zeyrek M, Zhang B, Zhilich V, Zhou JS, Zhou QD, Zhu L, Žlebčík R. Search for an axion-like particle in B → K(*)a(→ γγ) decays at Belle. Journal of High Energy Physics. Springer Science and Business Media LLC; 2025 Dec 15;2025(12).
Journal cover image

Published In

Journal of High Energy Physics

DOI

EISSN

1029-8479

Publication Date

December 15, 2025

Volume

2025

Issue

12

Publisher

Springer Science and Business Media LLC

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5106 Nuclear and plasma physics
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0105 Mathematical Physics