Search for short baseline νe disappearance with the T2K near detector

Authors

K. Abe, The University of Tokyo
J. Adam, Stony Brook University
H. Aihara, The University of Tokyo
T. Akiri, Duke University
C. Andreopoulos, University of Liverpool
S. Aoki, Kobe University
A. Ariga, University of Bern
S. Assylbekov, Colorado State University
D. Autiero, Université Claude Bernard Lyon 1
M. Barbi, University of Regina
G. J. Barker, University of Warwick
G. Barr, University of Oxford
P. Bartet-Friburg, Université de Paris
M. Bass, Colorado State University
M. Batkiewicz, Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
F. Bay, ETH Zürich
V. Berardi, Politecnico di Bari
B. E. Berger, Colorado State University
S. Berkman, The University of British Columbia
S. Bhadra, York University
F. D.M. Blaszczyk, Boston University
A. Blondel, Université de Genève
C. Bojechko, University of Victoria
S. Bolognesi, Institut de Recherche sur les Lois Fondamentales de l'Univers
S. Bordoni, Institut de Física d'Altes Energies, Bellaterra
S. B. Boyd, University of Warwick
D. Brailsford, Imperial College London
A. Bravar, Université de Genève

Document Type

Article

Publication Date

3-16-2015

Abstract

The T2K experiment has performed a search for νe disappearance due to sterile neutrinos using 5.9×1020 protons on target for a baseline of 280 m in a neutrino beam peaked at about 500 MeV. A sample of νe 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% C.L. is approximately sin22θee>0.3 for Δmeff2>7eV2/c4.

Publication Source (Journal or Book title)

Physical Review D - Particles, Fields, Gravitation and Cosmology

Recommended Citation

Abe, K., Adam, J., Aihara, H., Akiri, T., Andreopoulos, C., Aoki, S., Ariga, A., Assylbekov, S., Autiero, D., Barbi, M., Barker, G., Barr, G., Bartet-Friburg, P., Bass, M., Batkiewicz, M., Bay, F., Berardi, V., Berger, B., Berkman, S., Bhadra, S., Blaszczyk, F., Blondel, A., Bojechko, C., Bolognesi, S., Bordoni, S., Boyd, S., Brailsford, D., & Bravar, A. (2015). Search for short baseline νe disappearance with the T2K near detector. Physical Review D - Particles, Fields, Gravitation and Cosmology, 91 (5) https://doi.org/10.1103/PhysRevD.91.051102