XXXI International Conference on Neutrino Physics and Astrophysics

Effect of torsion in long-baseline neutrino oscillation experiments

18 Jun 2024, 17:30

2h

Near Aula Magna (U6 building) (University of Milano-Bicocca)

Poster Neutrino oscillations Poster session and reception 1

Speaker

Papia Panda (University of Hyderabad)

Description

In this work we have investigated neutrino oscillation in the presence of gravity, in particular the contorsion, which is the non-dynamical part of spin connection. The contraction of contorion field with tetrad gives us torsional coupling constants which can be probed by future long-baseline neutrino experiments like DUNE and P2SO. We use the notations ${\lambda }_{21}^{\prime }$ and ${\lambda }_{31}^{\prime }$ to define the torsional couplings in this study. We scrutinize the effect of new torsional couplings on neutrino oscillation probability; appearance and disappearance channel. It turns out that, appearance (disappearance) channel gets more affected by ${\lambda }_{21}^{\prime }$ (${\lambda }_{31}^{\prime })$ when we take one coupling at a time. This feature encourages us to place bounds on the two torsional couplings ${\lambda }_{21}^{\prime }$ and ${\lambda }_{31}^{\prime }$ from P2SO and DUNE. The outcome shows that P2SO provides more parameter constraints than DUNE. Furthermore, we have demonstrated the shift in the sensitivities of mass ordering, octant of the atmospheric mixing angle ${\theta }_{23}$, and CP violation when the new couplings are present. The outcome indicates that changing ${\lambda }_{(2,3)1}^{\prime }$ from zero to non-zero value significantly alters each sector of physics sensitivity.

Presentation materials

neutrino2024papia.pdf