{"paper":{"title":"Search for direct production of the $f_1(1285)$ resonance in $e^+e^-$ collisions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A. A. Botov, A. A. Korol, A. E. Obrazovsky, A. G. Bogdanchikov, A. G. Kharlamov, A. P. Lysenko, A. S. Kasaev, A. S. Kupich, A. V. Berdyugin, A. Yu. Barnyakov, D. A. Shtol, D. B. Shwartz, D. E. Berkaev, D. P. Kovrizhin, E. A. Perevedentsev, E. V. Pakhtusova, I. A. Koop, I. K. Surin, I. M. Zemlyansky, K. A. Martin, K. I. Beloborodov, K. V. Pugachev, L. V. Kardapoltsev, N. A. Melnikova, N. Yu. Muchnoi, P. Yu. Shatunov, R. A. Litvinov, S. I. Serednyakov, SND Collaboration: M. N. Achasov, S. V. Koshuba, T. V. Dimova, V. B. Golubev, V. N. Zhabin, V. P. Druzhinin, V. V. Zhulanov, Yu. M. Shatunov, Yu. V. Usov, Z. K. Silagadze","submitted_at":"2019-06-10T08:22:17Z","abstract_excerpt":"A search for direct production of the $f_1(1285)$ resonance in $e^+e^-$ annihilation is performed with the SND detector at the VEPP-2000 $e^+e^-$ collider. The analysis is based on data with an integrated luminosity of 15.1 pb$^{-1}$ accumulated in the center-of-mass energy range 1.2--1.4 GeV. Two $e^+e^-\\to f_1(1285)$ candidate events are found at the peak of the resonance and zero events beyond the resonance. The significance of the $e^+e^-\\to f_1(1285)$ signal is $2.5\\sigma$. The cross section at the maximum of the resonance is found to be $\\sigma(e^+e^-\\to f_1)=45^{+33}_{-24}$ pb. The corr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.03838","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1906.03838/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}