Decoherence in neutrino propagation through matter, and bounds from IceCube/DeepCore
Abstract
Here, we revisit neutrino oscillations in matter considering the open quantum system framework, which allows to introduce possible decoherence effects generated by New Physics in a phenomenological manner. We assume that the decoherence parameters $$\gamma _{ij}$$ may depend on the neutrino energy, as $$\gamma _{ij}=\gamma _{ij}^{0}(E/\text {GeV})^n\ (n = 0,\pm 1,\pm 2) $$ . The case of non-uniform matter is studied in detail and, in particular, we develop a consistent formalism to study the non-adiabatic case dividing the matter profile into an arbitrary number of layers of constant densities. This formalism is then applied to explore the sensitivity of IceCube and DeepCore to this type of effects. Our study is the first atmospheric neutrino analysis where a consistent treatment of the matter effects in the three-neutrino case is performed in presence of decoherence. We show that matter effects are indeed extremely relevant in this context. We find that IceCube is able to considerably improve over current bounds in the solar sector ( $$\gamma _{21}$$ ) and in the atmospheric sector ( $$\gamma _{31}$$ and $$\gamma _{32}$$ ) for $n=0,1,2$ and, in particular, by several orders of magnitude (between 3 and 9) for the $n=1,2$ cases. For $n=0$ we find $$\gamma _{32},\gamma _{31}< 4.0\times 10^{-24}\, (1.3\times 10^{-24})\ \hbox {GeV}$$ and $$\gamma _{21}<1.3\times 10^{-24}\, (4.1\times 10^{-24})\ \hbox {GeV}$$ at the 95% CL, for normal (inverted) mass ordering.
- Authors:
-
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- European Organization for Nuclear Research (CERN), Geneva (Switzerland)
- Instituto de Física Teorica UAM-CSIC, Madrid (Spain)
- Pontificia Univ. Catolica do Rio de Janeiro, Rio de Janeiro (Brazil)
- Publication Date:
- Research Org.:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1436721
- Report Number(s):
- arXiv:1803.04438; CERN-TH-2018-041; IFT-UAM/CSIC-18-022; FERMILAB-PUB-18-067-T
Journal ID: ISSN 1434-6044; 1662307; TRN: US1900225
- Grant/Contract Number:
- AC02-07CH11359
- Resource Type:
- Accepted Manuscript
- Journal Name:
- European Physical Journal. C, Particles and Fields
- Additional Journal Information:
- Journal Volume: 78; Journal Issue: 8; Journal ID: ISSN 1434-6044
- Publisher:
- Springer
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Coloma, Pilar, Lopez-Pavon, Jacob, Martinez-Soler, Ivan, and Nunokawa, Hiroshi. Decoherence in neutrino propagation through matter, and bounds from IceCube/DeepCore. United States: N. p., 2018.
Web. doi:10.1140/epjc/s10052-018-6092-6.
Coloma, Pilar, Lopez-Pavon, Jacob, Martinez-Soler, Ivan, & Nunokawa, Hiroshi. Decoherence in neutrino propagation through matter, and bounds from IceCube/DeepCore. United States. https://doi.org/10.1140/epjc/s10052-018-6092-6
Coloma, Pilar, Lopez-Pavon, Jacob, Martinez-Soler, Ivan, and Nunokawa, Hiroshi. Wed .
"Decoherence in neutrino propagation through matter, and bounds from IceCube/DeepCore". United States. https://doi.org/10.1140/epjc/s10052-018-6092-6. https://www.osti.gov/servlets/purl/1436721.
@article{osti_1436721,
title = {Decoherence in neutrino propagation through matter, and bounds from IceCube/DeepCore},
author = {Coloma, Pilar and Lopez-Pavon, Jacob and Martinez-Soler, Ivan and Nunokawa, Hiroshi},
abstractNote = {Here, we revisit neutrino oscillations in matter considering the open quantum system framework, which allows to introduce possible decoherence effects generated by New Physics in a phenomenological manner. We assume that the decoherence parameters $\gamma _{ij}$ may depend on the neutrino energy, as $\gamma _{ij}=\gamma _{ij}^{0}(E/\text {GeV})^n\ (n = 0,\pm 1,\pm 2) $ . The case of non-uniform matter is studied in detail and, in particular, we develop a consistent formalism to study the non-adiabatic case dividing the matter profile into an arbitrary number of layers of constant densities. This formalism is then applied to explore the sensitivity of IceCube and DeepCore to this type of effects. Our study is the first atmospheric neutrino analysis where a consistent treatment of the matter effects in the three-neutrino case is performed in presence of decoherence. We show that matter effects are indeed extremely relevant in this context. We find that IceCube is able to considerably improve over current bounds in the solar sector ( $\gamma _{21}$ ) and in the atmospheric sector ( $\gamma _{31}$ and $\gamma _{32}$ ) for $n=0,1,2$ and, in particular, by several orders of magnitude (between 3 and 9) for the $n=1,2$ cases. For $n=0$ we find $\gamma _{32},\gamma _{31}< 4.0\times 10^{-24}\, (1.3\times 10^{-24})\ \hbox {GeV}$ and $\gamma _{21}<1.3\times 10^{-24}\, (4.1\times 10^{-24})\ \hbox {GeV}$ at the 95% CL, for normal (inverted) mass ordering.},
doi = {10.1140/epjc/s10052-018-6092-6},
journal = {European Physical Journal. C, Particles and Fields},
number = 8,
volume = 78,
place = {United States},
year = {2018},
month = {8}
}
Web of Science
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