Constraints on oscillation parameters from ν.sub.e./sub. appearance and ν.sub.μ./sub. disappearance in NOvA

0484336 - FZÚ 2018 RIV US eng J - Článek v odborném periodiku
Adamson, P. - Aliaga, L. - Ambrose, D. - Lokajíček, Miloš - Zálešák, Jaroslav … celkem 180 autorů
Constraints on oscillation parameters from ν_e appearance and ν_μ disappearance in NOvA.
Physical Review Letters. Roč. 118, č. 23 (2017), s. 1-7, č. článku 231801. ISSN 0031-9007. E-ISSN 1079-7114
Institucionální podpora: RVO:68378271
Klíčová slova: neutrino/mu * secondary beam * hierarchy * mass * NOvA * neutrino * nuclear reactor
Obor OECD: Particles and field physics
Impakt faktor: 8.839, rok: 2017

Results are reported from an improved measurement of νμ→νe transitions by the NOvA experiment. Using an exposure equivalent to 6.05×1020 protons on target, 33 νe candidates are observed with a background of 8.2±0.8 (syst.). Combined with the latest NOvA νμ disappearance data and external constraints from reactor experiments on sin22θ13, the hypothesis of inverted mass hierarchy with θ23 in the lower octant is disfavored at greater than 93% C.L. for all values of δCP.
Trvalý link: http://hdl.handle.net/11104/0279489