We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Implications of the DLMA Solution of θ 12 for IceCube Data Using Different Astrophysical Sources.
- Authors
Ghosh, Monojit; Goswami, Srubabati; Pan, Supriya; Pavlović, Bartol
- Abstract
In this paper, we study the implications of the Dark Large Mixing Angle (DLMA) solutions of θ 12 in the context of the IceCube data. We study the consequences in the measurement of the neutrino oscillation parameters, namely the octant of θ 23 and δ CP in light of both Large Mixing Angle (LMA) and DLMA solutions of θ 12 . We find that it will be impossible for IceCube to determine the δ CP and the true nature of θ 12 , i.e., LMA or DLMA, at the same time. This is because of the existence of an intrinsic degeneracy at the Hamiltonian level between these parameters. Apart from that, we also identify a new degeneracy between θ 23 and two solutions of θ 12 for a fixed value of δ CP . We perform a chi-square fit using three different astrophysical sources, i.e., μ source, π source, and n source, to find that both μ source and π source are allowed within 1 σ , whereas the n source is excluded at 2 σ . It is difficult to make any conclusion regarding the measurement of θ 23 , δ CP for μ source. However, the π (n) source prefers the higher (lower) octant of θ 23 for both LMA and DLMA solution of θ 12 . The best-fit value of δ CP is around 180 ∘ ( 0 ∘ / 360 ∘ ) for the LMA (DLMA) solution of θ 12 , whereas for the DLMA (LMA) solution of θ 12 , the best-fit value is around 0 ∘ / 360 ∘ ( 180 ∘ ) for the π (n) source. If we assume the current best-fit values of θ 23 and δ CP to be true, then the μ and π sources prefer the LMA solution of θ 12 , whereas the n source prefers the DLMA solution of θ 12 .
- Subjects
NEUTRINO oscillation; NEUTRINOS
- Publication
Universe (2218-1997), 2023, Vol 9, Issue 9, p380
- ISSN
2218-1997
- Publication type
Article
- DOI
10.3390/universe9090380