Search for short baseline $ν_e$ disappearance with the T2K near detector
Abstract
The T2K experiment has performed a search for $\nu_e$ disappearance due to sterile neutrinos using $5.9 \times 10^{20}$ protons on target for a baseline of $280 m$ in a neutrino beam peaked at about $500 MeV$. A sample of \nu_e CC interactions in the off-axis near detector has been selected with a purity of 63\% and an efficiency of 26\%. The p-value for the null hypothesis is 0.085 and the excluded region at 95\% CL is approximately $sin^2 2 \theta_{ee} > 0.3$ for $\Delta m^2_{eff} > 7 eV^2 / c^4$.
Authors
Abe, K; Adam, J; Aihara, H; Akiri, T; Andreopoulos, C; Aoki, S; Ariga, A; Assylbekov, S; Autiero, D; Barbi, M; Barker, GJ; Barr, G; Bass, M; Batkiewicz, M; Bay, F; Berardi, V; Berger, BE; Berkman, S; Bhadra, S; Blaszczyk, FDM; Blondel, A; Bojechko, C; Bordoni, S; Boyd, SB; Brailsford, D; Bravar, A; Bronner, C; Buchanan, N; Calland, RG; Rodríguez, JC; Cartwright, SL; Castillo, R; Catanesi, MG; Cervera, A; Cherdack, D; Christodoulou, G; Clifton, A; Coleman, J; Coleman, SJ; Collazuol, G; Connolly, K; Cremonesi, L; Dabrowska, A; Danko, I; Das, R; Davis, S; Perio, PD; Rosa, GD; Dealtry, T; Dennis, SR; Densham, C; Dewhurst, D; Lodovico, FD; Luise, SD; Drapier, O; Duboyski, T; Duffy, K; Dumarchez, J; Dytman, S; Dziewiecki, M; Emery-Schrenk, S; Ereditato, A; Escudero, L; Finch, AJ; Aguirre, GAF; Friend, M; Fujii, Y; Fukuda, Y; Furmanski, AP; Galymov, V; Giffin, S; Giganti, C; Gilje, K; Goeldi, D; Golan, T; Gonin, M; Grant, N; Gudin, D; Hadley, DR; Haegel, L; Haesler, A; Haigh, MD; Hamilton, P; Hansen, D; Hara, T; Hartz, M; Hasegawa, T; Hastings, NC; Hayashino, T; Hayato, Y; Hearty, C; Helmer, RL; Hierholzer, M; Hignight, J; Hillairet, A; Himmel, A; Hiraki, T; Hirota, S; Holeczek, J; Horikawa, S; et al.Collections
- Particle Physics [245]
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