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We discuss time reversal (T) violation in neutrino oscillations in generic new physics scenarios. A general parameterization is adopted to describe flavour evolution, which captures a wide range of new physics effects, including…

High Energy Physics - Phenomenology · Physics 2022-03-14 Thomas Schwetz , Alejandro Segarra

We consider the time reversal (T) transformation in neutrino oscillations in a model-independent way by comparing the observed transition probabilities at two different baselines at the same neutrino energy. We show that, under modest model…

High Energy Physics - Phenomenology · Physics 2025-10-16 Sabya Sachi Chatterjee , Sudhanwa Patra , Thomas Schwetz , Kiran Sharma

We estimate the time reversal violations for neutrino oscillations in matter for typical experimental energies and baselines. We examine the present status of experiments on neutrino oscillations, propose experiments for TRV, and discuss…

High Energy Physics - Phenomenology · Physics 2015-05-27 Ernest M. Henley , Mikkel B. Johnson , Leonard S. Kisslinger

Time reversal (T) symmetry violations in neutrino oscillations imply the presence of an $L$-odd component in the transition probability at fixed neutrino energy, with $L$ denoting the distance between neutrino source and detector. Within…

High Energy Physics - Phenomenology · Physics 2025-12-11 Sabya Sachi Chatterjee , Sudhanwa Patra , Thomas Schwetz , Kiran Sharma

We consider the interplay of fundamental and matter-induced T violation effects in neutrino oscillations in matter. After discussing the general features of these effects we derive a simple approximate analytic expression for the…

High Energy Physics - Phenomenology · Physics 2010-05-28 E. Kh. Akhmedov , P. Huber , M. Lindner , T. Ohlsson

We study the possibility of measuring T (time reversal) violation in a future long baseline neutrino oscillation experiment. By assuming a neutrino factory as a staging scenario of a muon collider at the J-PARC site, we find that the…

High Energy Physics - Phenomenology · Physics 2024-12-19 Ryuichiro Kitano , Joe Sato , Sho Sugama

We discuss the concepts and methodology to implement an experiment probing directly Time Reversal (T) non-invariance, without any experimental connection to CP violation, by the exchange of "in" and "out" states. The idea relies on the…

High Energy Physics - Phenomenology · Physics 2012-12-05 J. Bernabeu , F. Martinez-Vidal , P. Villanueva-Perez

We study the possibility of measuring T (time reversal) violation in a future long baseline neutrino oscillation experiment. By assuming a neutrino factory as a staging scenario of a muon collider at the J-PARC site, we find that the $\nu_e…

High Energy Physics - Phenomenology · Physics 2024-12-10 Ryuichiro Kitano , Joe Sato , Sho Sugama

We demonstrate that T invariance can be violated even when Pontecorvo--Maki--Nakagawa--Sakata lepton mixing matrix is real. We obtain a sufficient condition of T violation in neutrino oscillations in matter and electromagnetic field. In the…

High Energy Physics - Phenomenology · Physics 2022-08-08 A. V. Chukhnova , A. E. Lobanov

We present a three-parameter neutrino-oscillation model for three flavors of massless neutrinos with Fermi-point splitting and tri-maximal mixing angles. One of these parameters is the T-violating phase \epsilon, for which the experimental…

High Energy Physics - Phenomenology · Physics 2010-11-05 Frans R. Klinkhamer

In this talk, we consider the interplay of fundamental and matter-induced T-violating effects in neutrino oscillations in matter. We present a simple approximative analytical formula for the T-violating probability asymmetry for three…

High Energy Physics - Phenomenology · Physics 2008-11-26 Tommy Ohlsson

The laws of quantum physics can be studied under the mathematical operation T that inverts the direction of time. Strong and electromagnetic forces are known to be invariant under temporal inversion, however the weak force is not. The BaBar…

High Energy Physics - Phenomenology · Physics 2014-05-05 Adrian Bevan , Gianluca Inguglia , Michele Zoccali

We present a three-parameter model for three flavors of massless left-handed neutrinos with Fermi-point splitting and tri-maximal mixing angles. One of these parameters is the T-violating phase \delta, for which the experimental results…

High Energy Physics - Phenomenology · Physics 2009-11-11 Frans R. Klinkhamer

We consider the implications of a violation of the equivalence principle or of Lorentz invariance in the neutrino sector for the T-asymmetry $\Delta P_T \equiv P(\nu_{\alpha} \to \nu_{\beta}) - P(\nu_{\beta} \to \nu_{\alpha})$ in a…

High Energy Physics - Phenomenology · Physics 2008-11-26 Yvonne Y. Y. Wong

Recently there has been a renewed activity in the physics of violations of Lorentz invariance in the neutrino sector. Flavor dependent Lorentz violation, which generically changes the pattern of neutrino oscillations, is extremely tightly…

High Energy Physics - Phenomenology · Physics 2013-04-05 Luca Maccione , Stefano Liberati , David M. Mattingly

Many experiments are currently looking for evidence of neutrino mass in the form of neutrino oscillations. Oscillation probabilities are non-linear functions of the neutrino mixing matrix elements, so most comparisons of data to theory are…

High Energy Physics - Phenomenology · Physics 2007-05-23 Doris Jeanne Wagner

The neutron is a well-suited system to search for a violation of time reversal invariance beyond the Standard Model. Recent experiments and projects searching for time reversal violation in the neutron decay and in the neutron electric…

High Energy Physics - Experiment · Physics 2007-05-23 T. Soldner

We investigate the impact of matter effects on T (time-reversal)-odd observables, making use of the quantum-mechanical formalism of neutrino-flavor evolution. We attempt to be comprehensive and pedagogical. Matter-induced T-invariance…

High Energy Physics - Phenomenology · Physics 2024-12-19 Olivia M. Bitter , André de Gouvêa , Kevin J. Kelly

The advantage of searching for violation of Time Reversal Invariance in neutron induced reactions using relative measurements of Time and Parity violating effects is discussed. This approach gives the enhancement of $T$-violating effects by…

Nuclear Theory · Physics 2016-11-23 Vladimir Gudkov

A simple model of the neutrino mixing is considered, which contains only one right-handed neutrino field, coupled via the mass term to the three usual left-handed fields. This is a simplest model that allows for three-flavour neutrino…

High Energy Physics - Phenomenology · Physics 2009-10-22 Piotr A. Rcaczka , Andrzej Szymacha , Stanisław Tatur
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