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We investigate the present constraints from MINOS and T2K experiments for the neutrino decay scenario induced by non-diagonal couplings of Majorons to neutrinos. As novelty, on top of the typical invisible decay prescription, we add the…

High Energy Physics - Phenomenology · Physics 2017-12-06 Alberto M. Gago , Ricardo A. Gomes , Abner L. G. Gomes , Joel Jones-Perez , Orlando L. G. Peres

We study cosmological scenarios in which high-energy neutrinos are emitted from the decay of long-lived massive particles at the cosmic time later than a redshift of 10^6. The high-energy neutrino events recently observed by the IceCube…

High Energy Physics - Phenomenology · Physics 2015-06-22 Yohei Ema , Ryusuke Jinno , Takeo Moroi

We present a generic structure (the layer structure) for decoherence effects in neutrino oscillations, which includes decoherence from quantum mechanical and classical uncertainties. The calculation is done by combining the concept of open…

High Energy Physics - Phenomenology · Physics 2022-08-24 Ting Cheng , Manfred Lindner , Werner Rodejohann

Recent work has proposed that the interaction between ordinary matter and a stochastic gravitational background can lead to the decoherence of large aggregates of ordinary matter. In this work we point out that these arguments can be…

High Energy Physics - Phenomenology · Physics 2015-02-12 Douglas Singleton , Nader Inan , Raymond Y. Chiao

Recently it was suggested that two very different mass-squared differences play a role in atmospheric neutrino oscillations. The larger of these also accounts for the LSND result and the smaller of these also drives the solar neutrino…

High Energy Physics - Phenomenology · Physics 2007-05-23 G. Barenboim , M. Narayan , S. Uma Sankar

Neutrino masses and mixings produce vacuum oscillations, an established quantum mechanical phenomenon. In matter, the Mikheev-Smirnov-Wolfenstein effect, due to neutrino interactions with the background particles, triggers resonant flavor…

High Energy Physics - Phenomenology · Physics 2024-10-11 M. Cristina Volpe

We analyze the impact of the data on long baseline \nu_\mu disappearance from the K2K experiment and reactor \bar\nu_e disappearance from the KamLAND experiment on the determination of the leptonic three-generation mixing parameters.…

High Energy Physics - Phenomenology · Physics 2011-01-31 M. C. Gonzalez-Garcia , Carlos Pena-Garay

Neutrino interactions with an external environment can in influence the neutrino oscillation pattern and the oscillations can be damped as a result of the neutrino quantum decoherence. In particular, the quantum decoherence of neutrino…

High Energy Physics - Phenomenology · Physics 2020-05-20 Konstantin Stankevich , Alexander Studenikin

One of the main purposes of long-baseline neutrino experiments is to unambiguously measure the CP violating phase in the neutrino sector within the three neutrino oscillation picture. In the presence of physics beyond the Standard Model,…

High Energy Physics - Phenomenology · Physics 2018-08-29 L. J. Flores , E. A. Garcés , O. G. Miranda

Within a covariant perturbative field-theoretical approach, the wave-packet modified neutrino propagator is expressed as an asymptotic expansion in powers of dimensionless Lorentz- and rotation-invariant variables. The expansion is valid at…

High Energy Physics - Phenomenology · Physics 2022-09-02 Vadim A. Naumov , Dmitry S. Shkirmanov

Position-dependent property of the neutrino produced in high-energy pion decay is studied theoretically using a wave packet formalism. It is found that the neutrino probability has a universal finite-distance correction if the pion has a…

High Energy Physics - Phenomenology · Physics 2015-03-18 K. Ishikawa , Y. Tobita

As the increasing of neutrino energy or matter density, the neutrino oscillation in matter may undergo "vacuum-dominated", "resonance" and "matter-dominated" three different stages successively. Neutrinos endure very different matter…

High Energy Physics - Phenomenology · Physics 2020-02-26 Shu Luo

Neutrinos undergoing stochastic perturbations as they propagate experience decoherence, damping neutrino oscillations over distance. Such perturbations may result from fluctuations in space-time itself if gravity is a quantum force,…

High Energy Physics - Phenomenology · Physics 2022-01-19 Thomas Stuttard , Mikkel Jensen

We consider the effect of non-standard neutrino interactions (NSI, for short) on the propagation of neutrinos through the supernova (SN) envelope within a three-neutrino framework and taking into account the presence of a neutrino…

High Energy Physics - Phenomenology · Physics 2010-04-06 A. Esteban-Pretel , R. Tomas , J. W. F. Valle

Our knowledge on the active 3$\nu$ mixing angles ($\theta_{12}$, $\theta_{13}$, and $\theta_{23}$) and the CP phase $\delta_{\mathrm{CP}}$ is becoming accurate day-by-day enabling us to test the unitarity of the leptonic mixing matrix with…

High Energy Physics - Phenomenology · Physics 2022-08-16 Sanjib Kumar Agarwalla , Sudipta Das , Alessio Giarnetti , Davide Meloni

Dissipative effects during neutrino decoupling in the early universe create a small backreaction on the Hubble rate, and lead to a small rise in temperature and entropy. We use a simplified thermo-hydrodynamic model, which provides a causal…

Astrophysics · Physics 2015-06-24 Roy Maartens , Josep Triginer

We consider the two schemes with four massive neutrinos which are compatible with the results of all neutrino oscillation experiments. We show that in these two schemes the probabilities of nu_e disappearance and nu_mu->nu_e appearance in…

High Energy Physics - Phenomenology · Physics 2007-05-23 S. M. Bilenky , C. Giunti , W. Grimus

The limitations of the Standard Model in explaining neutrino masses and neutrino mixing lead to the exploration of frameworks beyond the Standard Model (BSM). The possibility of neutrinos interacting with fermions via a scalar mediator is…

High Energy Physics - Phenomenology · Physics 2024-12-31 Moon Moon Devi , Dharitree Bezboruah , Abinash Medhi , Arnab Sarker , Debajyoti Dutta

Entropy changes due to delocalization and decoherence effects should modify the predictions for the cosmological neutrino background (C$\nu$B) temperature when one treats neutrino flavors in the framework of composite quantum systems.…

Cosmology and Nongalactic Astrophysics · Physics 2013-09-30 Alex E. Bernardini

In this paper, we show the effects on the transition probabilities for neutrino oscillations due to a thin constant density layer perturbation added to an arbitrary matter density profile. In the case of two neutrino flavors, we calculate…

High Energy Physics - Phenomenology · Physics 2009-11-07 Tommy Ohlsson
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