Search for Axion-Like Particles produced in $e^+e^-$ collisions at Belle II
Creators: name: Abudinen, F.
name: Adachi, I.
name: Aihara, H.
name: Akopov, N.
name: Aloisio, A.
name: Ameli, F.
name: Ky, N. Anh
name: Asner, D. M.
name: Aushev, T.
name: Babu, V.
name: Baehr, S.
name: Bahinipati, S.
name: Bambade, P.
name: Banerjee, Sw.
name: Bansal, S.
name: Baudot, J.
name: Becker, J.
name: Behera, P. K.
name: Bennett, J. V.
name: Bernieri, E.
name: Bernlochner, F. U.
name: Bertemes, M.
name: Bessner, M.
name: Bettarini, S.
name: Bhardwaj, V.
name: Bianchi, F.
name: Bilka, T.
name: Bilokin, S.
name: Biswas, D.
name: Bračko, M.
name: Branchini, P.
name: Braun, N.
name: Browder, T. E.
name: Budano, A.
name: Bussino, S.
name: Campajola, M.
name: Casarosa, G.
name: Cecchi, C.
name: Červenkov, D.
name: Chang, M. -C.
name: Chang, P.
name: Cheaib, R.
name: Chekelian, V.
name: Cheon, B. G.
name: Chilikin, K.
name: Chirapatpimol, K.
name: Cho, H. -E.
name: Cho, K.
name: Cho, S. -J.
name: Choi, S. -K.
name: Cinabro, D.
name: Corona, L.
name: Cremaldi, L. M.
name: Cunliffe, S.
name: Dash, N.
name: Dattola, F.
name: De La Cruz-Burelo, E.
name: De Nuccio, M.
name: De Pietro, G.
name: De Sangro, R.
name: Destefanis, M.
name: De Yta-Hernandez, A.
name: Di Capua, F.
name: Doležal, Z.
name: Dong, T. V.
name: Dort, K.
name: Dossett, D.
name: Dujany, G.
name: Eidelman, S.
name: Ferber, T.
name: Ferlewicz, D.
name: Fiore, S.
name: Fodor, A.
name: Forti, F.
name: Fulsom, B. G.
name: Ganiev, E.
name: Garg, R.
name: Garmash, A.
name: Gaur, V.
name: Gaz, A.
name: Gebauer, U.
name: Gellrich, A.
name: Geßler, T.
name: Giordano, R.
name: Giri, A.
name: Gobbo, B.
name: Godang, R.
name: Goldenzweig, P.
name: Golob, B.
name: Gomis, P.
name: Gradl, W.
name: Graziani, E.
name: Greenwald, D.
name: Hadjivasiliou, C.
name: Halder, S.
name: Hartbrich, O.
name: Hayasaka, K.
name: Hayashii, H.
name: Hearty, C.
name: Hedges, M. T.
name: De La Cruz, I. Heredia
name: Villanueva, M. Hernández
name: Hershenhorn, A.
name: Higuchi, T.
name: Hill, E. C.
name: Hirata, H.
name: Hoek, M.
name: Hohmann, M.
name: Hsu, C. -L.
name: Hu, Y.
name: Inami, K.
name: Inguglia, G.
name: Jabbar, J. Irakkathil
name: Ishikawa, A.
name: Itoh, R.
name: Jackson, P.
name: Jacobs, W. W.
name: Jaffe, D. E.
name: Jang, E. -J.
name: Jia, S.
name: Jin, Y.
name: Joo, C.
name: Kaliyar, A. B.
name: Kandra, J.
name: Karyan, G.
name: Kato, Y.
name: Kichimi, H.
name: Kiesling, C.
name: Kim, C. -H.
name: Kim, D. Y.
name: Kim, H. J.
name: Kim, S. -H.
name: Kim, Y. -K.
name: Kimmel, T. D.
name: Kinoshita, K.
name: Kleinwort, C.
name: Kodyš, P.
name: Koga, T.
name: Kohani, S.
name: Komarov, I.
name: Korpar, S.
name: Kraetzschmar, T. M. G.
name: Križan, P.
name: Krokovny, P.
name: Kuhr, T.
name: Kumar, M.
name: Kumar, R.
name: Kumara, K.
name: Kurz, S.
name: Kwon, Y. -J.
name: Lacaprara, S.
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name: Lee, I. -S.
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name: Lewis, P. M.
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name: Libby, J.
name: Lieret, K.
name: Gioi, L. Li
name: Liptak, Z.
name: Liu, Q. Y.
name: Liventsev, D.
name: Longo, S.
name: Luo, T.
name: MacQueen, C.
name: Maeda, Y.
name: Manfredi, R.
name: Manoni, E.
name: Marcello, S.
name: Marinas, C.
name: Martini, A.
name: Masuda, M.
name: Matsuoka, K.
name: Matvienko, D.
name: Meggendorfer, F.
name: Meier, F.
name: Merola, M.
name: Metzner, F.
name: Milesi, M.
name: Miller, C.
name: Miyabayashi, K.
name: Mizuk, R.
name: Azmi, K.
name: Mohanty, G. B.
name: Moser, H. -G.
name: Mrvar, M.
name: Müller, F. J.
name: Mussa, R.
name: Nakamura, I.
name: Nakao, M.
name: Nakazawa, H.
name: Natochii, A.
name: Niebuhr, Carsten
name: Nisar, N. K.
name: Nishida, S.
name: Nouxman, M. H. A.
name: Ogawa, K.
name: Ogawa, S.
name: Ono, H.
name: Oskin, P.
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name: Pakhlov, P.
name: Paladino, A.
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name: Park, H.
name: Park, S. -H.
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name: Popov, V.
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name: Reiter, S.
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name: Pérez, D. Rodríguez
name: Roney, J. M.
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name: Rout, N.
name: Sahoo, D.
name: Sakai, Y.
name: Sanders, D. A.
name: Sandilya, S.
name: Sangal, A.
name: Santelj, L.
name: Sato, Y.
name: Savinov, V.
name: Scavino, B.
name: Schwanda, C.
name: Schwartz, A. J.
name: Seddon, R. M.
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name: Selce, A.
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name: Spataro, S.
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name: Starič, M.
name: Stefkova, S.
name: Stottler, Z. S.
name: Stroili, R.
name: Strube, J.
name: Sumihama, M.
name: Sumiyoshi, T.
name: Summers, D. J.
name: Sutcliffe, W.
name: Svidras, H.
name: Tabata, M.
name: Takizawa, M.
name: Tamponi, U.
name: Tanaka, S.
name: Tanida, K.
name: Tanigawa, H.
name: Taras, P.
name: Tenchini, F.
name: Tonelli, D.
name: Torassa, E.
name: Trabelsi, K.
name: Uchida, M.
name: Uglov, T.
name: Unger, K.
name: Unno, Y.
name: Uno, S.
name: Urquijo, P.
name: Ushiroda, Y.
name: Vahsen, S. E.
name: Van Tonder, R.
name: Varner, G. S.
name: Varvell, K. E.
name: Vinokurova, A.
name: Vitale, L.
name: Waheed, E.
name: Wakai, M.
name: Wakeling, H. M.
name: Wang, C. H.
name: Wang, M. -Z.
name: Wang, X. L.
name: Warburton, A.
name: Watanabe, M.
name: Watanuki, S.
name: Webb, J.
name: Wehle, S.
name: Welsch, M.
name: Wessel, C.
name: Wiechczynski, J.
name: Windel, H.
name: Won, E.
name: Wu, L. J.
name: Xu, X. P.
name: Yabsley, B.
name: Yan, W.
name: Yang, S. B.
name: Ye, Hua
name: Yonenaga, M.
name: Yuan, C. Z.
name: Yusa, Y.
name: Zani, L.
name: Zhou, Q. D.
name: Zhukova, V. I.
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2020
Subjects: interaction: pseudoscalar
axion-like particles
BELLE
coupling constant
direct production
gauge boson
two-photon
photon
KEK-B

description: We present a search for the direct production of a light pseudoscalar $a$ decaying into two photons with the Belle II detector at the SuperKEKB collider. We search for the process ${e^+e^-\to\gamma a, a \to\gamma\gamma}$ in the mass range ${0.2} \,&lt; m_a &lt; {9.7}\,{\text{GeV/$c$}^2}$ using data corresponding to an integrated luminosity of $(445\pm 3)\,\text{pb}^{-1}$. Light pseudoscalars interacting predominantly with standard model gauge bosons (so-called axion-like particles or ALPs) are frequently postulated in extensions of the standard model. We find no evidence for ALPs and set 95% confidence level upper limits on the coupling strength $g_{a\gamma\gamma}$ of ALPs to photons at the level of $10^{-3}\,{\text{GeV}^{-1}}$. The limits are the most restrictive to date for $0.2\,