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we propose a modification of the electroweak theory, where the fermions with the same electroweak quantum numbers are combined in multiplets and are treated as different quantum states of a single particle. thereby, in describing the electroweak interactions it is possible to use four fundamental fermions only. in this... | how to construct a consistent and physically relevant the fock space of neutrino flavor states? |
we study quantum correlations encoded in a three-flavor neutrino system by using complete complementarity relations (ccr). due to the presence of local coherence in two-flavor subsystems, the ccr has an additional contribution not present in the two flavor mixing case. we investigate such coherence for the three possib... | complete complementarity relations for three-flavor neutrino oscillations |
the quantum neutrino oscillation phenomenon is not perfectly described by the actual standard physics models. experimental results of different neutrino sources like reactors, accelerators and supernovae, indicate a non-negligible flux error if compared to the predicted theoretical models. this work aims to propose dif... | neutrino non-standard interactions |
we analyze the subset of high energy neutrino events observed by icecube above 60 tev, combined with the information provided by passing muons, aiming to probe the flavor of cosmic neutrinos. first, we compare the observed track-to-shower ratio with the predictions for a cosmic neutrino population, taking into account ... | on the high-energy cosmic neutrinos seen by icecube |
the minos experiment measures the disappearance of νμ and νμ using two detectors separated by 734 km. the magnetized minos detectors enable to separate neutrinos and antineutrinos on an event-by-event basis. besides the precise standard three flavor oscillation, minos is also capable of looking for sterile neutrino sig... | search for sterile antineutrinos in minos using νμ disappearance |
neutrinos can experience self-induced flavor conversion in core-collapse supernovae due to neutrino-neutrino forward scattering. previously a stationary supernova model, the so called ``neutrino bulb model,'' was used exclusively to study collective neutrino oscillations in the core-collapse supernova. we show that eve... | time-dependent collective neutrino oscillations in supernovae |
the inverse β-decay of uniformly accelerated protons has proved to be a useful playground to investigate the asymptotic nature of mixed neutrino states - either flavor or mass. based on recent results, here we explore in more depth the role of neutrino mixing in the inverse β-decay and the consistency with cp-violation... | reparameterization invariance in accelerated proton decay |
many experiments have provided evidence for neutrino flavor oscillations, and consequently that neutrinos are in fact massive which is not predicted by the standard model. many experiments have been built to constrain the parameters which determine flavor oscillations, and for only three flavors of neutrinos the mixing... | flavor oscillations with sterile neutrinos and in dense neutrino environments |
the final analysis of data collected by the opera experiment improves the precision of measurements of neutrinos oscillating between muon and tau flavors. | opera's final stamp on neutrino oscillations |
convolution neural networks (cnns) have been successful in many complex computer vision problems in image identification and analysis due to recent advents in efficient gpu training. due to these successes, effort was put forth to bring this technology to applications in hep where the data could be easily converted int... | neutrino identification using convolutional neural networks in the nova experiment |
precise knowledge of neutrino interaction cross sections is required for current and future accelerator-based neutrino oscillation experiments. precision neutrino oscillation measurements require inference of the neutrino energy and flavor from the visible particles in the neutrino interaction in the detector. this inf... | modeling the environmental and public health impacts of smoke from biomass burning in the amazon basin |
neutrinos exhibit an interesting phenomenon called "neutrino oscillation", in which a neutrino changes its flavor after traveling some flight length. many experiments measured the mixing angles and mass differences, but the angle θ13 had been unmeasured due to its smallness compared to others. during 2011 and 2012, ser... | measurements of neutrino oscillation angle θ13 |
the anomalous electron antineutrino excess appearing in muon antineutrino beams seen by the lsnd and miniboone experiments can be explained by oscillations between the three known active neutrinos and new sterile neutrino flavors with masses near 1ev. if these light sterile neutrinos exist, they would open a brand new ... | search for short-baseline oscillations in the nova near detector |
in this thesis, i present my attempts to address the inverse puzzle in particle physics, i.e., the challenges associated with determining the phenomenological implications of experimental data. in particular, this thesis discusses (1) the limitations of measuring the mass of dark matter at the lhc, (2) new methods for ... | the inverse puzzle in particle physics |
we study the evolution of quantum correlations in a lepton-antineutrino pair, as produced in weak interactions (e.g. pion decay). assuming an inital state entangled in the spins of the two particles, we show that both chiral and flavor (neutrino) oscillations affect spin correlations. such corrections are relevant in t... | chiral and flavor oscillations in lepton-antineutrino spin correlations |
there are still poorly known non-linear effects caused by coherent scatterings of self-interacting neutrinos emitted from the proto-neutron star in core-collapse supernovae. one of these effects manifests itself in flavor space as collective neutrino-flavor oscillation, which results in a dramatic change in energy spec... | collective neutrino-flavor oscillations and application to supernova nucleosynthesis |
the quantum kinetic equations (qkes) are quantum master equations that account for both coherent quantum mechanical evolution and kinetic evolution induced by scattering. we solved the qkes for a simple two-state neutrino system in the hot and dense early universe where both neutrino flavor oscillation and scattering a... | quantum kinetic equilibrium |
all six flavors of neutrinos are ejected during core-collapse supernovae in a burst lasting tens of seconds. since neutrinos carry away the vast majority of the explosion's energy, detecting a core-collapse neutrino burst will give insight into the neutrino mass ordering and oscillation parameters as well as interestin... | prospects of supernova neutrino burst detection with coherent |
neutrinos, elementary particles with no electrical charge and a very small mass, are known to come in three different flavors: electron, muon, and tau. when travelling through space and time, a neutrino with an original flavor can be later detected as a different flavored neutrino. this quantum mechanical phenomenon is... | new insights in neutrino oscillation simulations on a quantum processor |
the t2k collaboration reported that leptons appear to violate the "particle-antiparticle mirror symmetry", which is also known as charge-parity (cp) symmetry [1]. leptonic cp violation can be detected with neutrinos. neutrinos are classified into three "flavors" based on their corresponding charged leptons (electron, m... | a commentary of "breaking the matter-antimatter mirror symmetry"： 10 remarkable discoveries from 2020 in nature |
neutrinos are elementary particles in the standard model of particle physics. there are 3 flavors of neutrinos that oscillate among themselves and their oscillation can be described by a 3×3 unitary matrix, containing three mixing angles θ12, θ23, θ13, and one cp phase. both θ12 and θ23 are known from previous experime... | recent results from daya bay reactor neutrino experiment |
the quantum kinetic equations (qkes) self-consistently describe the coherent quantum mechanical evolution and kinetic evolution induced by scattering of particles. we solved the qkes numerically for neutrinos in the hot and dense early universe where both neutrino flavor oscillation and scattering are important in the ... | approximate analytical solutions to the quantum kinetic equations in the early universe |
we discuss two models of radiative neutrino mass generation. the first model features one-loop zee model with z4 symmetry. the second model is the two-loop neutrino mass model with singly- and doubly-charged scalars. these two models fit neutrino oscillation data well and predict some interesting rates for lepton flavo... | predictive models of radiative neutrino masses |
we review the application of the relativistic quantum mechanics method for the description of neutrino oscillations for the studies of spin-flavor oscillations in background matter under the influence of a plane electromagnetic wave. basing on the new exact solution of the dirac-pauli equation for a massive neutrino in... | relativistic quantum mechanics description of neutrino spin-flavor oscillations in various external fields |
we simulate the time evolution of collective neutrino oscillations on a quantum computer using a short-depth trotter expansion. from the final state of the quantum computer we compute the probability of each neutrino in being in one of two neutrino flavors over time. we also characterize the change in pairwise entangle... | entanglement of collective neutrino oscillations on a quantum computer |
nufact 2021 is the twenty-second in the series of yearly international workshops which started in 1999 and which had previously been called the international workshop on neutrino factories. the change of name to international workshop on neutrinos from accelerators signals that the workshop program has, over the years,... | the 22nd international workshop on neutrinos from accelerators |
some neutrino experiments reveal anomalous results which can make room for new physics beyond the three-flavor neutrino oscillation model. these hints suggest the existence of sterile neutrinos with mass m <ev. sox will be a short-baseline disappearance experiment aiming to test this hypotesis, performed with the li... | search for sterile neutrinos with sox: monte carlo studies of the experiment sensitivity and systematic effects |
i discuss neutrino mixing ansatze, such as the generalized tri-bimaximal and bi-large mixing patterns, and their utility in describing the oscillation data. unitarity tests and probes of the absolute neutrino mass scale are briefly discussed. a short overview of neutrino mass generation is given. i discuss an orbifold ... | neutrino oscillations and flavor theories |
we all know that in the dense anisotropic interior of the star, neutrino-neutrino forward-scattering can lead to fast collective neutrino oscillations, which has striking consequences on flavor dependent neutrino emission and can be crucial for the evolution of a supernova and its neutrino signal. the flavor evolution ... | fast neutrino flavor conversion at late time |
in this paper, following the occam's razor principle, we have put forward a very simple form of the dirac neutrino mass matrix ${m}_{{\rm{d}}}^{}$ in the minimal seesaw model with the right-handed neutrino mass matrix being diagonal ${m}_{{\rm{r}}}^{}=\mathrm{diag}({m}_{1}^{},{m}_{2}^{})$ ; it has one texture zero and ... | a simplest seesaw model of the tm1 and μ-τ reflection symmetries for the neutrino masses and leptogenesis |
dune is a world-leading long-baseline neutrino oscillation experiment which will measure fundamental physical parameters to unprecedented sensitivity and precision for addressing the neutrino mass hierarchy, cp violation in neutrino mixing, and resolving the octant of mixing angle θ23. in addition to precisely testing ... | precision temperature gradient system for protodune |
we formulate a perturbative framework for the flavor transformation of the standard active three neutrinos but with a non-unitary flavor mixing matrix, a system which may be relevant for the leptonic unitarity test. we use the $\alpha$ parametrization of the non-unitary matrix and take its elements $\alpha_{\beta \gamm... | standard versus non-standard cp phases in neutrino oscillation in matter with non-unitarity |
till today lepton flavor violation has not been observed in processes involving charged leptons. hence, a search for it is under hot pursuit both in theories and experiments. in our current work, we investigate the rates of rare decay processes such as $\tau \rightarrow \mu \gamma$ in su(5) susy gut and found that it s... | charged lepton flavor violation in su(5) susy gut and mssm + type-i seesaw model |
we consider the phenomenology of the scotogenic model with the one-zero-textures of the neutrino flavor mass matrix. one of the six patterns of the neutrino mass matrix is favorable for the real yukawa matrix. on the other hand, for the complex yukawa matrix, five of the six patterns are compatible with observations of... | scotogenic dark matter and single-zero textures of the neutrino mass matrix |
the solid collaboration is currently operating a 1.6 tons neutrino detector near the belgian br2 reactor, with main goal the observation of the oscillation of electron antineutrinos to previously undetected flavor states. the highly segmented solid detector employs a compound scintillation technology based on pvt scint... | performance of the solid reactor neutrino detector |
nuclear reactors have been a crucial tool for our understanding of neutrinos. the disappearance of electron antineutrinos emitted by nuclear reactors has firmly established that neutrino flavor oscillates, and that neutrinos consequently have mass. the current generation of precision measurements rely on some of the wo... | 3-flavor oscillations with current and future reactor experiments |
we report new measurements of neutrino oscillation parameters from the minos+ experiment using the first two years of accelerator beam exposure combined with the complete set of accelerator and atmospheric data from minos. the analysis combined νµ disappearance and νe appearance data using the three-flavor oscillation ... | muon neutrino disappearance measurement at minos+ |
atmospheric neutrinos are comprised of both electron and muon neutrinos with a wide range of energies and baselines. in addition, those that pass through the earth are subject to substantial matter effects. therefore, atmospheric neutrinos are a natural laboratory for exploring 3-flavor neutrino oscillation with sensit... | 3-flavor oscillations with current and future atmospheric experiments |
t2k (tokai to kamioka) is a long-baseline neutrino oscillation experiment designed to measure (anti)neutrino flavor oscillations using an off-axis (anti)neutrino beam. the most recent oscillation results, obtained with an exposure of 1.5 (1.3) ×1021 protons on target in neutrino (antineutrino) mode are reported. the 2σ... | latest results from t2k |
the current understanding of particle physics is condensed into a single model known as the standard model, which has had remarkable success at describing the observed interactions of fundamental particles. since the discovery of the 125 gev higgs boson at the large hadron collider in 2012, the standard model appears t... | radiative neutrino mass, dark matter, flavor symmetry, and collider signatures |
the high statistics and excellent resolution capabilities of dune's 40ar detector will allow us to make precision studies of oscillation parameters capable of explaining cp violation in the lepton sector, test interaction models, and of studying phenomena that have, until now, seemed too complex to measure, like ντ det... | tau neutrinos and cross-sections at dune |
neutrinos are emitted in enormously large fluxes in extreme astrophysical environments such as core collapse supernovae, binary neutron star mergers and the early universe. through coherent forward scattering, neutrinos traveling along different trajectories may exchange flavor information resulting in macroscopically ... | classical and quantum coherent neutrino oscillations |
long-baseline neutrino oscillation experiments, which are among the largest neutrino experiments in the world, have extensive physics programs to make precision measurements of three-flavor oscillation parameters, search for physics beyond the standard model, and study neutrinos from astrophysical sources. in this arti... | experimental considerations in long-baseline neutrino oscillation measurements |
when neutrinos pass through a medium, they would bear the well known matter effect. in this talk, we will focus on the less discussed matter-dominated case. we find that when neutrinos having extremely high energy or going through extremely dense object, $νe$ decoupled due to its intense charged-current interaction wit... | neutrino oscillation in dense matter |
recent theoretical developments have shown that neutrinos can present coherent spin oscillations in high-energy anisotropic environments. these oscillations have been shown to depend directly on the absolute mass scale and majorana phase of the neutrino. however, simulations have determined that, under normal condition... | the fast flavor instability as a catalyst for neutrino spin oscillations in high energy astrophysical environments |
muon neutrino and antineutrino disappearance probabilities are identical in the standard three-flavor neutrino oscillation framework, but c p t violation and nonstandard interactions can violate this symmetry. in this work we report the measurements of sin2θ23 and δ m322 independently for neutrinos and antineutrinos. t... | updated t2k measurements of muon neutrino and antineutrino disappearance using 3.6 ×1021 protons on target |
we study the impact of the dynamical lorentz symmetry breaking induced by the auxiliary gauge fields of neutrino on the oscillations probability at dune. the dlsb introduces an alternative energy-momentum relation of the neutrinos and thus results in a new oscillation probability. we extend the previously proposed four... | studying neutrino oscillations at dune through dynamical lorentz symmetry breaking in four-majorana fermion model |
in our preceeding reports, we have pointed out that a unified description of weak decays accompanying neutrinos and the oscillation process is obtained on the basis of the expectation values of flavor-neutrino numbers with respect to the neutrino-source hadron state. in the present report, we investigate the effect on ... | remark on structure of expectation values of flavor-lepton numbers with respect to neutrino-source hadron states: deviation from fermi's golden relatio |
nuclear reactors are strong, pure and well localized sources of electron antineutrinos with energies in the few mev range. therefore they provide a suitable environment to study neutrino properties, in particular neutrino oscillation parameters. recent predictions of the expected antineutrino flux at nuclear reactors a... | sterile neutrinos: reactor experiments |
we propose a one-loop neutrino mass model with several su(2)l multiplet fermions and scalar fields in which the inert feature of a scalar to realize the one-loop neutrino mass can be achieved by the cancellation among higgs couplings thanks to non-trivial terms in the higgs potential and to present it in a simpler way.... | a one-loop neutrino mass model with su(2)l multiplet fields |
some recent developments in supernova neutrino physics are introduced where spontaneous symmetry breaking is a common theme. the physics of self-induced flavor conversion has acquired a new complication in that a new class of instabilities breaks axial symmetry of a neutrino stream, the multi-azimuth angle (maa) instab... | spontaneous symmetry breaking in supernova neutrinos |
recently the daya bay reactor neutrino experiment has presented several new results about neutrino and reactor physics after acquiring a large data sample and after gaining a more sophisticated understanding of the experiment. in this talk i will introduce the latest progress made by the experiment including a three-fl... | latest progress from the daya bay reactor neutrino experiment |
in this work, we try to explain the neutrino mass and mixing data radiatively at three-loop by extending the standard model (sm) with two charged singlet scalars and three right handed (rh) neutrinos. here, the lightest rh neutrino is a dark matter candidate that gives a relic density in agreement with the recent planc... | neutrino masses, dark matter and baryon asymmetry of the universe |
neutrinos propagating in media (matter and electromagnetic fields) undergo flavor and helicity oscillations, where helicity transitions are induced both by electromagnetic fields and matter currents. in addition, it has been shown that correlations between neutrinos and antineutrinos of opposite momentum can build up i... | neutrinos in dense media: helicity- and pair correlations |
the minos experiment, with a beam peak energy of 3 gev, ran for ten years collecting beam neutrino and antineutrino data samples as well as an atmospheric neutrino data sample. the minos standard three-flavor oscillation analysis of the combined charged current νμ and νμ beam, νμ and νμ atmospheric, and νe and νe appea... | latest results from minos and minos+ |
we present a flip-flop dual-component model to treat quantum dynamics of relativistic particles with a rest mass and investigate the matter waves' phase and amplitude modulations due to heisenberg's uncertainty principle. their matter waves behave like a traveling gaussian-shaped wave packet accompanied by a guiding pi... | mass oscillations and matter wave's phase and amplitude modulations of relativistic quantum particles induced by heisenberg's uncertainty principle |
recent studies have shown that in anisotropic environments neutrinos can present coherent helicity oscillations which depend directly on the absolute mass scale and majorana phases. these oscillations are usually too transient to produce important effects in high-energy astrophysical phenomena. however, we demonstrate ... | the fast flavor instability as a catalyst for neutrino spin oscillations in neutron star mergers |
this book is based on the author's work in the t2k long-baseline neutrino oscillation experiment, in which neutrinos are generated by a proton beam and are detected by near and far neutrino detectors. in order to achieve the precise measurement of the neutrino oscillation, an accurate understanding of the neutrino beam... | measurement of neutrino interactions and three flavor neutrino oscillations in the t2k experiment |
in this study, we use the quantum lanczos (qlanczos) algorithm to calculate the eigenvalues and eigenstates of a collective neutrino system as a function of the radial dependence of the coupling strength of neutrino interactions on ibm q quantum hardware. to this end, we use neutrino interactions hamiltonian expressed ... | collective neutrino oscillations on a quantum computer |
the peccei and quinn axions are low-mass pseudo-scalar neutral bosons whose existence was proposed to explain for the spontaneous breaking of the cp invariance in the early universe. in the minimal (su(2) left⊗ u(1)) version of the leptonic sector of the electroweak lagrangian flavor neutrinos are massive. they are des... | neutrino-axion couplings and the neutrino-mass |
the measurement of muon neutrino disappearance presented here was designed to make use of neutrinos of all flavors, exploiting nu e events and more poorly reconstructed cascade-like neutrino events to better constrain systematic uncertainties associated with neutrino fluxes and interactions. in accordance with icecube ... | measurement of atmospheric muon neutrino disappearance with icecube-deepcore |
neutrino decay modifies neutrino propagation in a unique way; not only is there flavor changing as there is in neutrino oscillations, there is also energy transport from initial to final neutrinos. the most sensitive direct probe of neutrino decay is currently icecube which can measure the energy and flavor of neutrino... | astrophysical neutrino decay |
the evolution of collective neutrino flavor oscillations that arises when the neutrinos are at high densities is a time-dependent quantum many-body problem. solving such a problem is computationally complex in the sense that the size of the hilbert space increases exponentially with the increase in the number of partic... | entanglement in two- and three-flavor collective neutrino oscillations |
neutrinos experience a potential induced by coherent forward scattering with other neutrinos in a dense neutrino gas. this effect results in an all-to-all coupled heisenberg-like contribution to the hamiltonian in the quantum many body (mb) treatment, and results in a nonlinear system of flavor transport equations in a... | decoherence in quantum many body neutrino oscillations |
we study the effects of a violation of equivalence principle (vep) on neutrino oscillations. we analyze the icecube data on atmospheric neutrino fluxes to obtain updated constraints on the parameter space of vep, with the benchmark choice that neutrinos with different masses couple with different strengths to the gravi... | violation of equivalence principle at icecube |
we investigate majorana dark matter in a new variant of u(1) lμ - lτgauge extension of standard model, containing three additional neutral fermions ne, nμ, nτ , along with a (\bar{3}, 1, 1/3) scalar leptoquark (slq) and an inert doublet, to study the phenomenology of dark matter, neutrino mass generation and flavour an... | exploring dark matter, neutrino mass and flavour anomalies in lμ- lτmodel |
the deep underground neutrino experiment (dune) is a next-generation experiment that will measure neutrino and antineutrino oscillations with a very long baseline in a wideband beam. dune will definitively resolve the neutrino mass ordering, and has discovery sensitivity to cp violation over a broad range of possible p... | long-baseline neutrino oscillation sensitivity with dune |
observations of neutrino oscillations from the majority of neutrino oscillation experiments are consistent with a three-flavor framework. however, the excess of events seen by lsnd and miniboone are incompatible with this model and can be explained by an additional, sterile, neutrino. these intriguing results are not c... | first results from the nova antineutrino neutral-current disappearance sterile neutrino search |
ultra-high energy (uhe) astrophysical neutrinos are unique in the sense that they are the only known particles that could travel through incredibly long distance unattenuated, with tev to eev energy, much higher than the most powerful man-made collider could provide. the detection of these uhe neutrinos has ushered a n... | new physics with ultra-high energy neutrinos |
the deep underground neutrino experiment (dune) is a long baseline, neutrino oscillation experiment aimed at quantifying cp violation in the neutrino sector using liquid argon as the primary detector medium. dune's main physics program is centered around measuring the flavor profile of a beam in neutrino and anti-neutr... | neutron cross section measurement in protodune single-phase |
by implementing the inverse seesaw mechanism into the well-known 3-3-1 model in order to explain the experimental data of neutrino oscillation, the 3-3-1 model can predict promoting signals of the lepton flavor violating decays ea → ebγ and ei → ejekel¯. in this work, we introduce analytic formulas of one-loop contribu... | charged lepton flavor violating decays ei → ejekēl in the 3-3-1 model with inverse seesaw neutrino |
convolutional neural networks (cnns), as a deep learning algorithm, have successfully been used for analyzing visual image data over the past years. as some of the physical experiments can produce image-like data, it is more than fitting to combine the interdisciplinary knowledge between high energy physics and deep le... | application of convolutional neural networks in neutrino physics |
after intensive and extensive basic research, it is gradually known that neutrino oscillations affect the dynamics of supernova explosions. since the density of neutrino gas is so high near neutron stars, neutrino self-interaction that induced by scattering of neutrino, are particularly important. among them, so-called... | core-collapse supernovae and neutrino oscillation |
in this work we summarize the current status of global neutrino oscillation analyses in the three-neutrino framework. we first describe the different data samples included in the global fit, emphasizing the role of each of them in constraining a given set of parameters. next, we discuss the main improvements obtained t... | three-flavor neutrino oscillations and beyond |
most data from neutrino oscillation experiments are consistent with the standard three-flavor paradigm. with increasing experimental precision, potential effects from high scale physics that could modify oscillations in subtle ways are searched for. one such high scale physics scenario involves large extra dimensions. ... | searching for large extra dimensions with minos and minos+ |
heavy nuclei are produced by various nuclear processes such as r-, ν-, νp-, γ/p- and s-processes in massive stars as well as small-to-intermediate mass stars. especially, the r-, ν- and νp-processes among them are strongly affected by the ν-nucleus interactions which leave observational signals to constrain still unkno... | neutrino interactions and radioactive nuclear reactions in explosive nucleosynthesis of heavy nuclei |
in this work, we investigate the impact of neutrino decay in the presence of non-standard interactions (nsi) along with the effects of the majorana phase on neutrino decay in matter in the context of two-flavor neutrino oscillations. these effects are studied on neutrino oscillation probabilities $p_{\alpha \beta} \equ... | majorana cp-violating phases and nsi effects in neutrino decay |
we test the compatibility of a model including sterile neutrinos that decay with microboone data. this model in particular, allows for oscillation from the standard model neutrinos into the sterile state, which then decays into a standard model flavored neutrino and a scalar field, which then decays to a neutrino and a... | a disappearance search for a sterile neutrino that also decays in microboone using the deeplearning-based analysis |
neutrinos can acquire both dynamic and geometric phases due to the nontrivial mixing between mass and flavor eigenstates. in this paper, we derive the general expressions for all plausible gauge invariant diagonal and off-diagonal geometric phases in the three- flavor neutrino model using the kinematic approach. we fin... | geometric phases in neutrino mixing |
in this dissertation, we study physics beyond the standard model (sm) of particle physics to incorporate some of its unexplained phenomenon. grand unified theories (guts) are natural extensions of the sm, since gauge coupling unification can be realized in these theories. also in guts, charged quantization can be expla... | fermion masses and mixings, leptogenesis and baryon number violation in unified theories |
the intense beam of muon and electron neutrinos with precisely known energy distributions provided by the stored-muon facility (nustorm) is bound to have a significant impact in our understanding of the fundamental properties of neutrinos and their interactions. the precision goals of the oscillation program require a ... | physics opportunities at nustorm |
in this talk, we discuss an alternative description of neutrino flavor oscillations using leptonic unitarity triangles (lut) which allows for geometric visualization of neutrino oscillations. after a brief review of the lut description of neutrino oscillations for propagation in vacuum and in matter with standard inter... | a geometrical look at neutrino oscillation probabilities with non-standard interactions |
the purpose of the present study is to compare the predictions of different models of star formation rate (sfr) history in the universe with the upper limit of super kamiokande for the neutrino background. to this aim we have calculated the expected neutrino density for the most popular models of sfr history, hogg et a... | supernova neutrino background bound on the sfr history |
several anomalies recorded in short-baseline neutrino experiments suggest the possibility that the standard 3-flavor framework may be incomplete and point towards a manifestation of new physics. light sterile neutrinos provide a credible solution to these puzzling results. here, we present a concise review of the statu... | sterile neutrinos |
we construct a new perturbative framework to describe neutrino oscillation in matter with the unique expansion parameter \epsilon, which is defined as \delta m^2_{21} / \delta m^2_{ren} with the renormalized atmospheric \delta m^2_{ren} \equiv \delta m^2_{31} - s^2_{12} \delta m^2_{21}. it allows us to derive the maxim... | flavor-universal form of neutrino oscillation probabilities in matter |
the identification of flavor content in the cosmic high-energy neutrinos recently observed by the icecube collaboration could spread the light on the origin of these neutrinos. we study the expected fraction of muon tracks for different cases of the neutrino flavor composition at the sources taking into account uncerta... | flavor composition of the icecube neutrinos: a quest for sterile neutrinos? |
an alternative neutrino oscillation process is presented as a counterexample for which the neutrino may have nil mass consistent with the standard model. the process is developed in a quantum trajectories representation of quantum mechanics, which has a hamilton-jacobi foundation. this process has no need for mass diff... | neutrino oscillations with nil mass |
we examine the ultrahigh-energy neutrino propagation in interstellar space in the dirac and majorana cases. employing the two-neutrino mixing approximation and using the astrophysical constraints on neutrino magnetic moments, we show that both the flavor and the spin oscillations of the dirac and majorana neutrinos exh... | comparative study of dirac and majorana ultrahigh-energy neutrino oscillations in an interstellar magnetic field |
neutrinos are the second most common particles in the universe, after the photons. neutrinos (and antineutrinos) exist in three different "flavors", namely, electron, tau and muon neutrinos. a physical neutrino, however, can oscillate among these three flavors and, thus, it is said to be a mix of the three flavor state... | neutrino oscillations and the reno experiment |
the observed neutrino flavor transitions are currently explained by the three flavor neutrino oscillation phenomenon, considered to be the leading order mechanism behind the flavor transitions. currently existing data from lsnd, miniboone and reactor experiments demonstrate anomalies that could potentially be indicatio... | search for exotic transitions of muon neutrinos to electron neutrinos with minos |
the idea that cosmic rays, interacting in the earth atmosphere, should generate a large flux of neutrinos, was understood very early, and concrete ideas about possible methods to detect this flux were already formulated in the 1960s. at the same time the first theoretical estimates of the size and properties of the flu... | atmospheric neutrinos: from the pioneering experiments to imb and kamiokande |
supernova neutrinos produced during a core collapse of a massive star, carries 99% of the energy produced during the violent phenomenon. these neutrinos are weakly interacting massive particles and can provide useful information for both particle physics (neutrino oscillations parameters) and astrophysics (explosion me... | prediction of supernova neutrino signals by detectors and its future challenges |
there is mounting evidence that the icecube findings cannot be described simply invoking a single power-law spectrum for cosmic neutrinos. we discuss which are the minimal modifications of the spectrum that are required by the existing observations and we obtain a universal cosmic neutrino spectrum, i.e. valid for all ... | on the compatibility of the icecube results with an universal neutrino spectrum |
the computation of neutrino flavor transition amplitudes through inhomogeneous matter is a time-consuming step and thus could benefit from optimization and parallelization. next to reliable parameter estimation of intrinsic physical quantities such as neutrino masses and mixing angles, these transition amplitudes are i... | massively parallel computation of atmospheric neutrino oscillations on cuda-enabled accelerators |
since the discovery of neutrino, many of its properties have been studied. the flavor oscillations recently revealed that, contrary to the standard model assumptions, neutrinos have a finite mass. other neutrino characteristics are still to be investigated, such as its dirac or majorana nature: experiments are currentl... | the cuore experiment at lngs |
we discuss the recent progress in neutrino physics in the following fields: (i) interpretation of the short and long neutrino oscillation data in terms of neutrino flavor transitions; (ii) models for neutrino masses and mixings. | recent developments in neutrino physics |
we discuss some recent results on physics beyond the standard model, including constraints on sterile neutrinos, charged lepton flavor violation, and baryon number violation. | some recent results on physics beyond the standard model |
neutrinos play an important role in the supernovae explosions. the energy transfer from the core to the outer layers depends on the neutrino flavor evolution, affected by collective neutrino oscillations. the latter are damped by kinematic decoherence, developing in the course of the neutrino propagation. the kinematic... | incorporating the heisenberg and pauli principles into the kinetic approach to neutrino oscillations |
nova is a long-baseline neutrino experiment studying neutrino oscillations with fermilab's numi beam. a convolutional neural network (cnn) that analyzes topological features is used to determine neutrino flavor in both the near and far detectors and observe the disappearance of muon neutrinos and the appearance of elec... | transformer networks for nova event classification |
the nova experiment at fermilab is a long-baseline accelerator neutrino experiment designed to study and understand neutrinos through their flavor oscillations between two functionally-identical detectors, a 300 ton near detector and a 14 kton far detector separated by 809 km and placed 14 mrad off-axis to the numi neu... | measuring electromagnetic activity with the nova test beam |
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