Effect of torsion in long-baseline neutrino oscillation experiments
Abstract In this work, we investigate the effect of curved spacetime on neutrino oscillation. In a curved spacetime, the effect of curvature on fermionic fields is represented by spin connection. The spin connection consists of a non-universal “contorsion” part which is expressed in terms of vector...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2025-01-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-025-13771-4 |
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| author | Papia Panda Dinesh Kumar Singha Monojit Ghosh Rukmani Mohanta |
| author_facet | Papia Panda Dinesh Kumar Singha Monojit Ghosh Rukmani Mohanta |
| author_sort | Papia Panda |
| collection | DOAJ |
| description | Abstract In this work, we investigate the effect of curved spacetime on neutrino oscillation. In a curved spacetime, the effect of curvature on fermionic fields is represented by spin connection. The spin connection consists of a non-universal “contorsion” part which is expressed in terms of vector and axial current density of fermions. The contraction of contorsion part with the tetrad fields, which connects the internal flat space metric and the spacetime metric, is called torsion. In a scenario where neutrino travels through background of fermionic matter at ordinary densities in a curved spacetime, the Hamiltonian of neutrino oscillation gets modified by the torsional coupling constants $$\lambda _{21}^{\prime }$$ λ 21 ′ and $$\lambda _{31}^{\prime }$$ λ 31 ′ . The aim of this work is to study the effect of $$\lambda _{21}^{\prime }$$ λ 21 ′ and $$\lambda _{31}^{\prime }$$ λ 31 ′ in DUNE and P2SO. In our study we, (i) discuss the effect of torsional coupling constants on the neutrino oscillation probabilities, (ii) estimate the capability of P2SO and DUNE to put bounds on these parameters and (iii) show how the physics sensitivities get modified in presence of torsion. |
| format | Article |
| id | doaj-art-e7ca6c1a7f984f18bbd57fa11c4acd5e |
| institution | Kabale University |
| issn | 1434-6052 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj-art-e7ca6c1a7f984f18bbd57fa11c4acd5e2025-01-26T12:49:41ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522025-01-0185111310.1140/epjc/s10052-025-13771-4Effect of torsion in long-baseline neutrino oscillation experimentsPapia Panda0Dinesh Kumar Singha1Monojit Ghosh2Rukmani Mohanta3School of Physics, University of HyderabadSchool of Physics, University of HyderabadCenter of Excellence for Advanced Materials and Sensing Devices, Ruder Bošković InstituteSchool of Physics, University of HyderabadAbstract In this work, we investigate the effect of curved spacetime on neutrino oscillation. In a curved spacetime, the effect of curvature on fermionic fields is represented by spin connection. The spin connection consists of a non-universal “contorsion” part which is expressed in terms of vector and axial current density of fermions. The contraction of contorsion part with the tetrad fields, which connects the internal flat space metric and the spacetime metric, is called torsion. In a scenario where neutrino travels through background of fermionic matter at ordinary densities in a curved spacetime, the Hamiltonian of neutrino oscillation gets modified by the torsional coupling constants $$\lambda _{21}^{\prime }$$ λ 21 ′ and $$\lambda _{31}^{\prime }$$ λ 31 ′ . The aim of this work is to study the effect of $$\lambda _{21}^{\prime }$$ λ 21 ′ and $$\lambda _{31}^{\prime }$$ λ 31 ′ in DUNE and P2SO. In our study we, (i) discuss the effect of torsional coupling constants on the neutrino oscillation probabilities, (ii) estimate the capability of P2SO and DUNE to put bounds on these parameters and (iii) show how the physics sensitivities get modified in presence of torsion.https://doi.org/10.1140/epjc/s10052-025-13771-4 |
| spellingShingle | Papia Panda Dinesh Kumar Singha Monojit Ghosh Rukmani Mohanta Effect of torsion in long-baseline neutrino oscillation experiments European Physical Journal C: Particles and Fields |
| title | Effect of torsion in long-baseline neutrino oscillation experiments |
| title_full | Effect of torsion in long-baseline neutrino oscillation experiments |
| title_fullStr | Effect of torsion in long-baseline neutrino oscillation experiments |
| title_full_unstemmed | Effect of torsion in long-baseline neutrino oscillation experiments |
| title_short | Effect of torsion in long-baseline neutrino oscillation experiments |
| title_sort | effect of torsion in long baseline neutrino oscillation experiments |
| url | https://doi.org/10.1140/epjc/s10052-025-13771-4 |
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