{"paper":{"title":"Search for a light CP-odd Higgs boson and low-mass dark matter at the Belle experiment","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A. B. Kaliyar, A. Bobrov, A. Bozek, A. Chen, A. Frey, A. Garmash, A. Giri, A. Ishikawa, A. Kuzmin, A. M. Bakich, A. Rostomyan, A. Vinokurova, A. Vossen, A. Zupanc, B. Bhuyan, Belle Collaboration: I.S. Seong, B. G. Cheon, B. G. Fulsom, B. Golob, B. Pal, B. Wang, C. H. Wang, C. Kiesling, C.-L. Hsu, C. P. Shen, C. Schwanda, C. Van Hulse, C. Z. Yuan, D. Cinabro, D. Epifanov, D. Joffe, D. Kotchetkov, D. Liventsev, D. M. Asner, D. \\v{C}ervenkov, D. Y. Kim, E. Guido, E. Nakano, E. Prencipe, E. Solovieva, E. Widmann, E. Won, F. Simon, F. Tenchini, G. B. Mohanty, G. Bonvicini, G. Inguglia, G. Karyan, G. Pakhlova, G. Russo, G. Schnell, G. Varner, H. Aihara, H. B. Jeon, H. Hayashii, H. Kichimi, H. Miyata, H. Ono, H. Park, H. Yamamoto, H. Ye, I. Adachi, I. S. Lee, J. Biswal, J. B. Kim, J. Dingfelder, J. E. Fast, J.-G. Shiu, J. Haba, J. Libby, J. Schueler, J. S. Lange, J. Yelton, K. Chilikin, K. Cho, K. Hayasaka, K. Huang, K. Inami, K. J. Nath, K. Kinoshita, K. K. Joo, K. Miyabayashi, K. Nishimura, K. Senyo, K. Tanida, K. T. Kim, K. Trabelsi, L. Cao, L. E. Piilonen, L. K. Li, L. Li Gioi, L. Santelj, M. Bra\\v{c}ko, M. E. Sevior, M. Gelb, M. Iwasaki, M. Lubej, M. Masuda, M. Merola, M. Nakao, M. Nayak, M. Niiyama, M. Ritter, M. Salehi, M. Stari\\v{c}, M. Sumihama, M. Takizawa, M. Uchida, M. Watanabe, N. Dash, N. Gabyshev, N. K. Nisar, O. Schneider, P. Behera, P. Chang, P. Goldenzweig, P. Kody\\v{s}, P. Kri\\v{z}an, P. Krokovny, P. Pakhlov, P. Wang, R. Ayad, R. Garg, R. Itoh, R. Kroeger, R. Mizuk, R. Mussa, R. Pestotnik, R. van Tonder, S. Al Said, S. Choudhury, S. C. Lee, S. Cunliffe, S. Di Carlo, S. Eidelman, S.E. Vahsen, S. H. Kim, S. Jia, S. Korpar, S. Nishida, S. Ogawa, S. Sandilya, S. Stani\\v{c}, S. Uno, S. Watanuki, S. Zakharov, T.-A. Shibata, T. Aushev, T. Bilka, T. E. Browder, T. Higuchi, T. Iijima, T. Julius, T. K. Pedlar, T. Kuhr, T. Kumita, T. Luo, T. Matsuda, T. Mori, T. Nanut, T. Sanuki, T. Sumiyoshi, T. Uglov, T. V. Dong, V. Aulchenko, V. Babu, V. Bansal, V. Bhardwaj, V. Chekelian, V. Gaur, V. Savinov, V. Zhilich, V. Zhukova, V. Zhulanov, W. Ostrowicz, W.-S. Hou, W. Sutcliffe, W. W. Jacobs, Y. B. Li, Y. Choi, Y. Iwasaki, Y. Jin, Y.-J. Kwon, Y. Sakai, Y. Seino, Y. Unno, Y. Usov, Y. Yusa, Z. P. Zhang","submitted_at":"2018-09-14T02:07:51Z","abstract_excerpt":"We report on the first Belle search for a light CP-odd Higgs boson, $A^{0}$, that decays into low mass dark matter, $\\chi$, in final states with a single photon and missing energy. We search for events produced via the dipion transition $\\Upsilon(\\textrm{2S})\\rightarrow\\Upsilon(\\textrm{1S})\\pi^{+}\\pi^{-}$, followed by the on-shell process $\\Upsilon(\\textrm{1S})\\rightarrow\\gamma A^{0}$ with $A^{0} \\rightarrow\\chi\\chi$, or by the off-shell process $\\Upsilon(\\textrm{1S})\\rightarrow\\gamma\\chi\\chi$. Utilizing a data sample of 157.3 $\\times$ 10$^{6}$ $\\Upsilon(\\textrm{2S})$ decays, we find no eviden"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.05222","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}