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Decoherence in neutrino oscillation at the ESSnuSB experiment

Aguilar, J. ; Zhou, Y. ; Carlile, C. J. LU ; Cederkall, J. LU ; Christiansen, P. LU ; Collins, M. LU ; Iversen, K. E. LU orcid and Lindroos, M. LU (2024) In Journal of High Energy Physics 2024(8).
Abstract

Neutrino oscillation experiments provide a unique window in exploring several new physics scenarios beyond the standard three flavour. One such scenario is quantum decoherence in neutrino oscillation which tends to destroy the interference pattern of neutrinos reaching the far detector from the source. In this work, we study the decoherence in neutrino oscillation in the context of the ESSnuSB experiment. We consider the energy-independent decoherence parameter and derive the analytical expressions for Pμe and Pμμ probabilities in vacuum. We have computed the capability of ESSnuSB to put bounds on the decoherence parameters namely, Γ21 and Γ32 and found that the constraints on Γ21... (More)

Neutrino oscillation experiments provide a unique window in exploring several new physics scenarios beyond the standard three flavour. One such scenario is quantum decoherence in neutrino oscillation which tends to destroy the interference pattern of neutrinos reaching the far detector from the source. In this work, we study the decoherence in neutrino oscillation in the context of the ESSnuSB experiment. We consider the energy-independent decoherence parameter and derive the analytical expressions for Pμe and Pμμ probabilities in vacuum. We have computed the capability of ESSnuSB to put bounds on the decoherence parameters namely, Γ21 and Γ32 and found that the constraints on Γ21 are competitive compared to the DUNE bounds and better than the most stringent LBL ones from MINOS/MINOS+. We have also investigated the impact of decoherence on the ESSnuSB measurement of the Dirac CP phase δCP and concluded that it remains robust in the presence of new physics.

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author collaboration
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Long-Baseline Neutrino Experiments, Oscillation
in
Journal of High Energy Physics
volume
2024
issue
8
article number
63
publisher
Springer
external identifiers
  • scopus:85201306812
ISSN
1029-8479
DOI
10.1007/JHEP08(2024)063
language
English
LU publication?
yes
additional info
Publisher Copyright: © The Author(s) 2024.
id
937ca718-f89d-4367-926e-4614e8a20bb1
date added to LUP
2024-08-24 15:23:39
date last changed
2025-04-04 14:00:46
@article{937ca718-f89d-4367-926e-4614e8a20bb1,
  abstract     = {{<p>Neutrino oscillation experiments provide a unique window in exploring several new physics scenarios beyond the standard three flavour. One such scenario is quantum decoherence in neutrino oscillation which tends to destroy the interference pattern of neutrinos reaching the far detector from the source. In this work, we study the decoherence in neutrino oscillation in the context of the ESSnuSB experiment. We consider the energy-independent decoherence parameter and derive the analytical expressions for P<sub>μe</sub> and P<sub>μμ</sub> probabilities in vacuum. We have computed the capability of ESSnuSB to put bounds on the decoherence parameters namely, Γ<sub>21</sub> and Γ<sub>32</sub> and found that the constraints on Γ<sub>21</sub> are competitive compared to the DUNE bounds and better than the most stringent LBL ones from MINOS/MINOS+. We have also investigated the impact of decoherence on the ESSnuSB measurement of the Dirac CP phase δ<sub>CP</sub> and concluded that it remains robust in the presence of new physics.</p>}},
  author       = {{Aguilar, J. and Zhou, Y. and Carlile, C. J. and Cederkall, J. and Christiansen, P. and Collins, M. and Iversen, K. E. and Lindroos, M.}},
  issn         = {{1029-8479}},
  keywords     = {{Long-Baseline Neutrino Experiments; Oscillation}},
  language     = {{eng}},
  number       = {{8}},
  publisher    = {{Springer}},
  series       = {{Journal of High Energy Physics}},
  title        = {{Decoherence in neutrino oscillation at the ESSnuSB experiment}},
  url          = {{http://dx.doi.org/10.1007/JHEP08(2024)063}},
  doi          = {{10.1007/JHEP08(2024)063}},
  volume       = {{2024}},
  year         = {{2024}},
}