A search for flavor-changing non-standard neutrino interactions using $ν_{e}$ appearance in MINOS

Adamson, P. and Anghel, I. and Aurisano, A. and Barr, G. and Bishai, M. and Blake, A. and Bock, G. J. and Bogert, D. and Cao, S. V. and Carroll, T. J. and Castromonte, C. M. and Chen, R. and Childress, S. and Coelho, J. A. B. and Corwin, L. and Cronin-Hennessy, D. and Jong, J. K. de and Rijck, S. de and Devan, A. V. and Devenish, N. E. and Diwan, M. V. and Escobar, C. O. and Falk, E. and Feldman, G. J. and Flanagan, W. and Frohne, M. V. and Gabrielyan, M. and Gallagher, H. R. and Germani, S. and Gomes, R. A. and Gouffon, P. and Graf, N. and Gran, R. and Grzelak, K. and Habig, A. and Hahn, S. R. and Hartnell, J. and Hatcher, R. and Holin, A. and Hylen, J. and Irwin, G. M. and Isvan, Z. and Jensen, D. and Kafka, T. and Kasahara, S. M. S. and Koizumi, G. and Kordosky, M. and Kreymer, A. and Lang, K. and Nowak, J. A. (2017) A search for flavor-changing non-standard neutrino interactions using $ν_{e}$ appearance in MINOS. Physical Review D, 95. ISSN 1550-7998

We report new constraints on flavor-changing non-standard neutrino interactions from the MINOS long-baseline experiment using $\nu_{e}$ appearance candidate events from a predominantly $\nu_{\mu}$ beam. We used a statistical selection algorithm to separate $\nu_{e}$ candidates from background events, enabling an analysis of the combined MINOS neutrino and antineutrino data. We observe no deviations from standard neutrino mixing, and thus place constraints on the non-standard interaction matter effect, $\varepsilon_{e\tau}$, and phase, $(\delta_{CP}+\delta_{e\tau})$, using a thirty-bin likelihood fit.