{"paper":{"title":"A limit for the mu -> e gamma decay from the MEG experiment","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"hep-ex","authors_text":"A. Baldini, A. Barchiesi, A. De Bari, A. Korenchenko, A. Maki, A. Papa, A. Popov, A. Yamamoto, B. Golden, B. I. Khazin, C. Bemporad, C. Cerri, C. Topchyan, C. Voena, D. Kaneko, D. Mzavia, D. N. Grigoriev, D. Nicol\\`o, D. Zanello, E. Baracchini, F. Cei, F. Gatti, F. Ignatov, F. Renga, F. Sergiampietri, F. Xiao, G. Boca, G. Cavoto, G. Cecchet, G. Gallucci, G. Piredda, G. Signorelli, H. Natori, H. Nishiguchi, J. Egger, L. Galli, M. De Gerone, MEG collaboration: J. Adam, M. Grassi, M. Hildebrandt, M. Panareo, M. Rossella, M. Schneebeli, N. Kravchuk, O. Kiselev, P.-R. Kettle, P. W. Cattaneo, R. Nard\\`o, R. Pazzi, R. Sawada, R. Valle, S. Dussoni, S. Mihara, S. Ritt, S. Suzuki, S. Yamada, S. Yamashita, T. Doke, T. Haruyama, T. Iwamoto, T. Mori, V. Tumakov, W. Molzon, W. Ootani, X. Bai, Y. Hisamatsu, Y. Nishimura, Y. Uchiyama, Yu. V. Yudin","submitted_at":"2009-08-18T15:34:23Z","abstract_excerpt":"A search for the decay mu -> e gamma, performed at PSI and based on data from the initial three months of operation of the MEG experiment, yields an upper limit on the branching ratio of BR(mu -> e gamma) < 2.8 x 10**-11 (90% C.L.). This corresponds to the measurement of positrons and photons from ~ 10**14 stopped mu-decays by means of a superconducting positron spectrometer and a 900 litre liquid xenon photon detector."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0908.2594","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/0908.2594/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"}