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We have estimated fluxes of neutrinos and gamma-rays that are generated from decays of charged and neutral pions from a pulsar surrounded by supernova ejecta in our galaxy, including an effect that has not been taken into consideration,…

Astrophysics · Physics 2009-11-10 S. Nagataki

The observed flavor oscillations of solar and atmospheric neutrinos determine several elements of the leptonic mixing matrix, but leave open the small mixing angle Theta_13, a possible CP-violating phase, the mass ordering, the absolute…

Astrophysics · Physics 2017-08-23 G. G. Raffelt

When neutrinos are produced from long lived particles the life-time of the source particle affects the flavour conversion probability formula. Due to this source dependence experiments (like LSND) which use muon decay neutrinos are two…

High Energy Physics - Phenomenology · Physics 2007-05-23 Subhendra Mohanty

Neutrino-neutrino refraction leads to collective flavor evolution that can include fast flavor conversion, an ingredient still missing in numerical simulations of core-collapse supernovae. We provide a theoretical framework for the linear…

High Energy Physics - Phenomenology · Physics 2024-10-01 Damiano F. G. Fiorillo , Georg G. Raffelt

Neutrino oscillations give clear evidence for non-vanishing neutrino masses and lepton-flavor violation (LFV) in the neutrino sector. This provides strong motivation to search for signals of LFV also in the charged lepton sector, and to…

High Energy Physics - Phenomenology · Physics 2009-11-07 F. Deppisch , H. Päs , A. Redelbach , R. Rückl , Y. Shimizu

Differences in lepton number (i.e., $ L _e - L _\mu $, $ L _e - L _\tau $, $ L_\mu - L _\tau $, or combinations thereof) are not conserved charges in the Standard Model due to the observation of neutrino oscillations. We compute the…

High Energy Physics - Phenomenology · Physics 2020-05-20 Jeff A. Dror

Collective neutrino oscillations play a crucial role in transporting lepton flavor in astrophysical settings like supernovae and neutron star binary merger remnants, which are characterized by large neutrino densities. In these settings,…

High Energy Astrophysical Phenomena · Physics 2022-09-07 Alessandro Roggero , Ermal Rrapaj , Zewei Xiong

New effects of nontrivial neutrino electromagnetic properties are investigated on the basis of exact solutions of the modified Dirac equations for neutrinos in dense magnetized rotating matter. The effect of spatial separation of different…

High Energy Physics - Phenomenology · Physics 2014-06-11 Alexander Studenikin , Ilya Tokarev

The interaction of longitudinal and transversal polarized neutrinos (antineutrinos) with the field of a nucleus is investigated at the account of their rest mass, charge, magnetic, anapole and electric dipole moments. The compound structure…

High Energy Physics - Phenomenology · Physics 2013-07-18 B. S. Yuldashev , R. S. Sharafiddinov

The phases of quantum interference effects in charged lepton production by neutrinos (neutrino oscillations) following pion decay at rest and in flight, muon decay and nuclear $\beta-$decay at rest as well as for `muon oscillations'…

High Energy Physics - Phenomenology · Physics 2016-08-16 J. H. Field

Collective flavor oscillations driven by neutrino-neutrino self interaction inside core-collapse supernovae have now been shown to bring drastic changes in the resultant neutrino fluxes. This would in turn significantly affect the diffuse…

High Energy Physics - Phenomenology · Physics 2009-05-29 Sovan Chakraborty , Sandhya Choubey , Basudeb Dasgupta , Kamales Kar

We consider in detail a possibility that the observed neutrino oscillations are due to refraction on ultralight scalar boson dark matter. We introduce the refractive mass squared, $\tilde{m}^2$, and study its properties: dependence on…

High Energy Physics - Phenomenology · Physics 2023-11-13 Manibrata Sen , Alexei Y. Smirnov

Supernova neutrinos could be well-suited for probing neutrino decay, since decay may be observed even for very small decay rates or coupling constants. We will introduce an effective operator framework for the combined description of…

Astrophysics · Physics 2009-11-06 Manfred Lindner , Tommy Ohlsson , Walter Winter

Particle oscillations following neutrino production processes are analysed within Feynman's path amplitude formulation of quantum mechanics. Consideration of the temporal sequence of production and detection events reveals an important…

High Energy Physics - Phenomenology · Physics 2007-05-23 J. H. Field

It has been proposed that the coherent propagation of long-lived heavy neutrino mass eigenstates can lead to an oscillating rate of lepton number conserving (LNC) and violating (LNV) events, as a function of the distance between the…

High Energy Physics - Phenomenology · Physics 2021-04-01 Stefan Antusch , Johannes Rosskopp

We study the fully nonlinear fast flavor evolution of neutrinos in 1+1 dimensions. Our numerical analysis shows that at late time the system reaches an approximately steady state. Using the steady state approximation we analytically show…

High Energy Physics - Phenomenology · Physics 2020-09-23 Soumya Bhattacharyya , Basudeb Dasgupta

The scattering of neutrinos off dark matter can induce time delays in their propagation compared to that of photons, which would wash out correlations between ultra-high-energy neutrinos and electromagnetic observations of their sources -…

High Energy Physics - Phenomenology · Physics 2019-09-11 Seth Koren

The accurate prediction of the neutrino beam produced in muon decays and the absence of opposite helicity contamination for a particular neutrino flavor make a future neutrino factory the ideal place to look for the lepton flavor violating…

High Energy Physics - Phenomenology · Physics 2010-02-03 A. Bueno , M. Campanelli , M. Laveder , J. Rico , A. Rubbia

We consider a quantum field theory (QFT) model of neutrino oscillations in vacuum that attempts to take into account that the neutrino source particle and the neutrino detection particle both interact with their respective environments by…

High Energy Physics - Phenomenology · Physics 2023-04-06 Walter Grimus

Deuteron disintegration by charged-current neutrino (CC$\nu$) scattering offers the possibility to determine the energy of the incident neutrino by measuring in coincidence two of the three resulting particles: a charged lepton (usually a…

High Energy Physics - Phenomenology · Physics 2015-10-28 O. Moreno , T. W. Donnelly , J. W. Van Orden , W. P. Ford
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