{"paper":{"title":"Search for light vector boson production in $e^+e^- \\rightarrow \\mu^+ \\mu^- \\gamma$ interactions with the KLOE experiment","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A. Budano, A. De Santis, A. Di Cicco, A. Di Domenico, A. Fantini, A. Gajos, A. Kupsc, A. Palladino, A. Passeri, A. Ranieri, B. Hoistad, B. Sciascia, C. Bloise, D. Babusci, D. Domenici, D. Kaminska, D. Moricciani, E. Czerwinski, E. Dan\\`e, E. De Lucia, E. Graziani, F. Bossi, F. Ceradini, F. Curciarello, F. Happacher, F. Loddo, F. Nguyen, G. Bencivenni, G. De Robertis, G. Fanizzi, G. Felici, G. Giardina, G. Mandaglio, G. Morello, G. Venanzoni, I. Balwierz-Pytko, I. Prado Longhi, I. Sarra, J. Lee-Franzini, J. Zdebik (KLOE-2 Collaboration), K. Kacprzak, L. Caldeira Balkest\\r{a}hl, L. Heijkenskjold, L. Tortora, M. Martemianov, M. Martini, M. Mascolo, M. Schioppa, M. Silarski, M. Wolke, O. Erriquez, P. Branchini, P. Ciambrone, P. De Simone, P. Franzini, P. Gauzzi, P. Moskal, P. Santangelo, R. Di Salvo, R. Messi, S. Fiore, S. Giovannella, S. Loffredo, S. Miscetti, T. Johansson, V. De Leo, V. Patera, W. Krzemien, W. Wislicki","submitted_at":"2014-04-30T16:00:07Z","abstract_excerpt":"We have searched for a light vector boson $U$, the possible carrier of a \"dark force\", with the KLOE detector at the DA$\\Phi$NE \\epm\\ collider, motivated by astrophysical evidence for the presence of dark matter in the universe. Using \\epm\\ collisions collected with an integrated luminosity of $239.3$~pb$^{-1}$, we look for a dimuon mass peak in the reaction \\epm\\to$\\mu^+ \\mu^-$\\gam, corresponding to the decay $U\\to\\mu^+\\mu^-$. We find no evidence for a $U$ vector boson signal. We set a 90\\% CL upper limit for the mixing parameter squared between the photon and the $U$ boson of 1.6$\\times$10$^"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.7772","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"}