Observation of Electron Neutrino Appearance in a Muon Neutrino Beam
Data(s) |
19/11/2013
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Resumo |
The T2K experiment has observed electron neutrino appearance in a muon neutrino beam produced 295 km from the Super-Kamiokande detector with a peak energy of 0.6 GeV. A total of 28 electron neutrino events were detected with an energy distribution consistent with an appearance signal, corresponding to a significance of 7.3σ when compared to 4.92 ± 0.55 expected background events. In the PMNS mixing model, the electron neutrino appearance signal depends on several parameters including three mixing angles θ12, θ23, θ13, a mass difference Δm232 and a CP violating phase δCP. In this neutrino oscillation scenario, assuming |Δm232|=2.4×10−3 eV2, sin2θ23=0.5, δCP=0, and Δm232>0 (Δm232<0), a best-fit value of sin22θ13 = 0.140+0.038−0.032 (0.170+0.045−0.037) is obtained. |
Formato |
application/pdf application/pdf |
Identificador |
http://boris.unibe.ch/49183/1/1311.4750.pdf http://boris.unibe.ch/49183/7/PhysRevLett.112.pdf Abe, K.; Adam, J.; Aihara, H.; Akiri, T.; Andreopoulos, C.; Aoki, S.; Ariga, Akitaka; Ariga, Tomoko; Assylbekov, S.; Autiero, D.; Barbi, M.; Barker, G. J.; Barr, G.; Bass, M.; Batkiewicz, M.; Bay, F.; Bentham, S. W.; Berardi, V.; Berger, B. E.; Berkman, S.; ... (2013). Observation of Electron Neutrino Appearance in a Muon Neutrino Beam. Physical review letters, 112(6), 061802. American Physical Society 10.1103/PhysRevLett.112.061802 <http://dx.doi.org/10.1103/PhysRevLett.112.061802> doi:10.7892/boris.49183 info:doi:10.1103/PhysRevLett.112.061802 urn:issn:0031-9007 |
Idioma(s) |
eng |
Publicador |
American Physical Society |
Relação |
http://boris.unibe.ch/49183/ |
Direitos |
info:eu-repo/semantics/openAccess info:eu-repo/semantics/restrictedAccess |
Fonte |
Abe, K.; Adam, J.; Aihara, H.; Akiri, T.; Andreopoulos, C.; Aoki, S.; Ariga, Akitaka; Ariga, Tomoko; Assylbekov, S.; Autiero, D.; Barbi, M.; Barker, G. J.; Barr, G.; Bass, M.; Batkiewicz, M.; Bay, F.; Bentham, S. W.; Berardi, V.; Berger, B. E.; Berkman, S.; ... (2013). Observation of Electron Neutrino Appearance in a Muon Neutrino Beam. Physical review letters, 112(6), 061802. American Physical Society 10.1103/PhysRevLett.112.061802 <http://dx.doi.org/10.1103/PhysRevLett.112.061802> |
Palavras-Chave | #530 Physics |
Tipo |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed |