Model-Independent Test of T Violation in Neutrino Oscillations

Area of Science:

• Particle Physics
• Neutrino Physics
• High Energy Physics

Background:

• Neutrino oscillations are a key phenomenon in particle physics.
• Understanding the fundamental properties of neutrinos, such as CP violation and time-reversal symmetry, is crucial.
• Current experimental methods may be limited in their ability to probe certain new physics scenarios.

Purpose of the Study:

• To propose a model-independent method for establishing time reversal symmetry violation.
• To introduce a general parametrization of flavor transition probabilities for new physics searches.
• To enable the search for T-odd components in neutrino transition probabilities.

Main Methods:

• Developing a general parametrization of flavor transition probabilities under weak assumptions.
• Comparing neutrino data at different baselines but at the same neutrino energies.
• Utilizing a large class of new physics scenarios within the parametrization.

Main Results:

• The proposed method allows for a search for T-odd components in transition probabilities.
• The test can be performed by comparing data from experiments at different baselines.
• The feasibility of the test with existing or planned experiments is demonstrated.

Conclusions:

• A novel, model-independent method for detecting time reversal symmetry violation in neutrino oscillations is established.
• The method is broadly applicable to future neutrino oscillation experiments.
• The proposed technique offers a powerful tool for exploring new physics beyond the Standard Model.