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Searching non-standard interactions with atmospheric neutrinos at ESSnuSB

Aguilar, J. ; Zormpa, Olga ; Carlile, C. J. LU ; Cederkall, J. LU ; Christiansen, P. LU ; Collins, M. LU ; Danared, H. LU ; Eshraqi, M. LU orcid ; Iversen, K. E. LU orcid and Milas, N. LU (2026) In Journal of High Energy Physics 2026(5).
Abstract

Atmospheric neutrinos provide a unique avenue to study neutrino interactions in matter. In this work, the prospects of constraining non-standard neutrino interactions with atmospheric neutrino oscillations are investigated for the proposed ESSnuSB far detector. By analyzing atmospheric neutrino samples equivalent to 5.4 Mt·year exposure, it is found that ESSnuSB could be able to set the upper bounds ∣ϵeμm∣<0.053,∣ϵeτm∣<0.057,∣ϵμτm∣<0.021,ϵeem−ϵμμm<0.075 and ∣ϵττm−ϵμμm∣<0.031 at 90% CL, when the results are minimized for ϕeμm,ϕeτm and ϕμτm and normal ordering is assumed for neutrino masses. It is also shown that the presence of non-standard interactions could affect the sensitivities to neutrino mass ordering and... (More)

Atmospheric neutrinos provide a unique avenue to study neutrino interactions in matter. In this work, the prospects of constraining non-standard neutrino interactions with atmospheric neutrino oscillations are investigated for the proposed ESSnuSB far detector. By analyzing atmospheric neutrino samples equivalent to 5.4 Mt·year exposure, it is found that ESSnuSB could be able to set the upper bounds ∣ϵeμm∣<0.053,∣ϵeτm∣<0.057,∣ϵμτm∣<0.021,ϵeem−ϵμμm<0.075 and ∣ϵττm−ϵμμm∣<0.031 at 90% CL, when the results are minimized for ϕeμm,ϕeτm and ϕμτm and normal ordering is assumed for neutrino masses. It is also shown that the presence of non-standard interactions could affect the sensitivities to neutrino mass ordering and θ23 octant in comparison to the standard interaction scheme. The results of this work highlight the complementarity between atmospheric and accelerator neutrino programs in ESSnuSB.

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author collaboration
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Beyond Standard Model, Long-Baseline Neutrino Experiments, Oscillation
in
Journal of High Energy Physics
volume
2026
issue
5
article number
109
publisher
Springer
external identifiers
  • scopus:105039880985
ISSN
1029-8479
DOI
10.1007/JHEP05(2026)109
language
English
LU publication?
yes
additional info
Publisher Copyright: © The Author(s) 2026.
id
3910754b-ccb3-4e91-83a4-19518b9d978e
date added to LUP
2026-09-05 16:14:11
date last changed
2026-09-08 14:06:38
@article{3910754b-ccb3-4e91-83a4-19518b9d978e,
  abstract     = {{<p>Atmospheric neutrinos provide a unique avenue to study neutrino interactions in matter. In this work, the prospects of constraining non-standard neutrino interactions with atmospheric neutrino oscillations are investigated for the proposed ESSnuSB far detector. By analyzing atmospheric neutrino samples equivalent to 5.4 Mt·year exposure, it is found that ESSnuSB could be able to set the upper bounds ∣ϵeμm∣&lt;0.053,∣ϵeτm∣&lt;0.057,∣ϵμτm∣&lt;0.021,ϵeem−ϵμμm&lt;0.075 and ∣ϵττm−ϵμμm∣&lt;0.031 at 90% CL, when the results are minimized for ϕeμm,ϕeτm and ϕμτm and normal ordering is assumed for neutrino masses. It is also shown that the presence of non-standard interactions could affect the sensitivities to neutrino mass ordering and θ<sub>23</sub> octant in comparison to the standard interaction scheme. The results of this work highlight the complementarity between atmospheric and accelerator neutrino programs in ESSnuSB.</p>}},
  author       = {{Aguilar, J. and Zormpa, Olga and Carlile, C. J. and Cederkall, J. and Christiansen, P. and Collins, M. and Danared, H. and Eshraqi, M. and Iversen, K. E. and Milas, N.}},
  issn         = {{1029-8479}},
  keywords     = {{Beyond Standard Model; Long-Baseline Neutrino Experiments; Oscillation}},
  language     = {{eng}},
  number       = {{5}},
  publisher    = {{Springer}},
  series       = {{Journal of High Energy Physics}},
  title        = {{Searching non-standard interactions with atmospheric neutrinos at ESSnuSB}},
  url          = {{http://dx.doi.org/10.1007/JHEP05(2026)109}},
  doi          = {{10.1007/JHEP05(2026)109}},
  volume       = {{2026}},
  year         = {{2026}},
}