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arxiv: 1502.04833 · v1 · submitted 2015-02-17 · ✦ hep-ph · physics.ins-det

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Some conclusive considerations on the comparison of the ICARUS nu_mu to nu_e oscillation search with the MiniBooNE low-energy event excess

M. Antonello , B. Baibussinov , P. Benetti , F. Boffelli , A. Bubak , E. Calligarich , S. Centro , A. Cesana
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K. Cieslik D. B. Cline A.G. Cocco A. Dabrowska A. Dermenev A. Falcone C. Farnese A. Fava A. Ferrari D. Gibin S. Gninenko A. Guglielmi M. Haranczyk J. Holeczek M. Kirsanov J. Kisiel I. Kochanek J. Lagoda S. Mania A. Menegolli G. Meng C. Montanari S. Otwinowski P. Picchi F. Pietropaolo P. Plonski A. Rappoldi G.L. Raselli M. Rossella C. Rubbia P. Sala A. Scaramelli F. Sergiampietri D. Stefan R. Sulej M. Szarska M. Terrani M. Torti F. Varanini S. Ventura C. Vignoli H. Wang X. Yang A. Zalewska A. Zani K. Zaremba
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classification ✦ hep-ph physics.ins-det
keywords minibooneexcesseventicaruslow-energyanomalousbeencollaboration
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A sensitive search for anomalous LSND-like nu_mu to nu_e oscillations has been performed by the ICARUS Collaboration exposing the T600 LAr-TPC to the CERN to Gran Sasso (CNGS) neutrino beam. The result is compatible with the absence of additional anomalous contributions giving a limit to oscillation probability of 3.4E-3 and 7.6E-3 at 90% and 99% confidence levels respectively showing a tension between these new limits and the low-energy event excess (200 < E_nu QE < 475 MeV) reported by MiniBooNE Collaboration. A more detailed comparison of the ICARUS data with the MiniBooNE low-energy excess has been performed, including the energy resolution as obtained from the official MiniBooNE data release. As a result the previously reported tension is confirmed at 90% C.L., suggesting an unexplained nature or an otherwise instrumental effect for the MiniBooNE low energy event excess

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