We report results from the first search for νμ→νe transitions by the NOvA experiment. In an exposure equivalent to 2.74×10^20 protons on target in the upgraded NuMI beam at Fermilab, we observe 6 events in the Far Detector, compared to a background expectation of 0.99±0.11(syst) events based on the Near Detector measurement. A secondary analysis observes 11 events with a background of 1.07±0.14(syst). The 3.3σ excess of events observed in the primary analysis disfavors 0.1π<0.5π in the inverted mass hierarchy at the 90% C.L.

Adamson, P., Ader, C., Andrews, M., Anfimov, N., Anghel, I., Arms, K., et al. (2016). First Measurement of Electron Neutrino Appearance in NOvA. PHYSICAL REVIEW LETTERS, 116(15) [10.1103/PhysRevLett.116.151806].

First Measurement of Electron Neutrino Appearance in NOvA

Brunetti G;
2016

Abstract

We report results from the first search for νμ→νe transitions by the NOvA experiment. In an exposure equivalent to 2.74×10^20 protons on target in the upgraded NuMI beam at Fermilab, we observe 6 events in the Far Detector, compared to a background expectation of 0.99±0.11(syst) events based on the Near Detector measurement. A secondary analysis observes 11 events with a background of 1.07±0.14(syst). The 3.3σ excess of events observed in the primary analysis disfavors 0.1π<0.5π in the inverted mass hierarchy at the 90% C.L.
Articolo in rivista - Articolo scientifico
NOvA, neutrino oscillation
English
2016
116
15
151806
none
Adamson, P., Ader, C., Andrews, M., Anfimov, N., Anghel, I., Arms, K., et al. (2016). First Measurement of Electron Neutrino Appearance in NOvA. PHYSICAL REVIEW LETTERS, 116(15) [10.1103/PhysRevLett.116.151806].
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/283960
Citazioni
  • Scopus 184
  • ???jsp.display-item.citation.isi??? 154
Social impact