par Aartsen, M. G.;Aguilar Sanchez, Juan Antonio 
;Ansseau, Isabelle ;Heereman von Zuydtwyck, David ;Meagher, Kevin ;Meures, Thomas ;O'Murchadha, Aongus ;Pinat, Elisa ;Raab, Christoph ;Toscano, Simona ; [et al.]
Référence Physical Review D, 97, 7, 073003
Publication Publié, 2018-04
;Ansseau, Isabelle ;Heereman von Zuydtwyck, David ;Meagher, Kevin ;Meures, Thomas ;O'Murchadha, Aongus ;Pinat, Elisa ;Raab, Christoph ;Toscano, Simona ; [et al.]Référence Physical Review D, 97, 7, 073003
Publication Publié, 2018-04
Article révisé par les pairs
| Résumé : | As atmospheric neutrinos propagate through the Earth, vacuumlike oscillations are modified by Standard Model neutral- and charged-current interactions with electrons. Theories beyond the Standard Model introduce heavy, TeV-scale bosons that can produce nonstandard neutrino interactions. These additional interactions may modify the Standard Model matter effect producing a measurable deviation from the prediction for atmospheric neutrino oscillations. The result described in this paper constrains nonstandard interaction parameters, building upon a previous analysis of atmospheric muon-neutrino disappearance with three years of IceCube DeepCore data. The best fit for the muon to tau flavor changing term is ϵμτ=-0.0005, with a 90% C.L. allowed range of -0.0067<ϵμτ<0.0081. This result is more restrictive than recent limits from other experiments for ϵμτ. Furthermore, our result is complementary to a recent constraint on ϵμτ using another publicly available IceCube high-energy event selection. Together, they constitute the world's best limits on nonstandard interactions in the μ-τ sector. |
