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understanding the charge conjugation nature and the absolute mass scale of neutrinos will lead to valuable insights into physics beyond the standard model. both of these aspects can be probed by the observation of neutrinoless double beta decay. the experimental search for neutrinoless double beta decay is thus an impo... | neutrinoless double beta decay experiments |
the nova experiment has detected the disappearance of muon (anti-)neutrinos and the appearance of electron (anti-)neutrinos in the numi beam at fermilab and have made measurements of parameters related to neutrino oscillations including the neutrino mass hierarchy and the cp violating phase. key to these measurements i... | neutrino event reconstruction with machine learning on nova |
the main goal of the lucifer experiment is to study the neutrinoless double beta decay, a rare process allowed if neutrinos are majorana particles. although aiming at a discovery, in the case of insufficient sensitivity the lucifer technique will be the demonstrator for a higher mass experiment able to probe the entire... | a scintillating bolometer array for double beta decay studies: the lucifer experiment |
in this dissertation we study two topics in theoretical cosmology: one more formal, the other more phenomenological. we work in the context of eternally inflating cosmologies. these arise in any fundamental theory that contains at least one stable or metastable de sitter vacuum. each topic is presented in a different c... | neutrino masses in the landscape and global-local dualities in eternal inflation |
in this analysis we measure the neutron production from atmospheric neutrino interactions in heavy water (d2o) at the sudbury neutrino observatory (sno). these neutrons form a significant background to nucleon decay analyses but production rates are not very well known mainly due to uncertainties on neutrino cross-sect... | neutron production from atmospheric neutrino interactions at the sudbury neutrino observatory |
we present a framework to generate the mass hierarchies and mixing angles of the fermionic sector of the standard model with two extra higgs doublets and one right-handed neutrino. the masses of the first and second generation are generated by small quantum effects, explaining the hierarchy with the third generation. t... | standard model fermion masses and mixing angles generated in 3hdm |
various evidence reveals that dark matter is a primary component of this universe. the amount of dark matter is known, but its identity is a mystery. to determine its properties, efforts to detect and produce dark matter are underway. dark matter annihilations throughout the galaxy may produce photons, neutrinos, and c... | probing dark matter-neutrino connection via indirect detection experiments |
we quantify the impact of cosmological surveys on the search for neutrinoless double beta decay (0vββ) within the hypothesis that the 0vββ rate is dominated by the majorana mass of ordinary neutrinos. in particular, we exploit the potential relevance of the work of palanque-delabrouille et al. [jcap 1502, 045 (2015)], ... | recent results from cosmology and neutrinoless double beta decay |
we report on the design concept for phase iii of the project 8 experiment. in the third phase of project 8 we aim to place a limit on the neutrino mass that is similar to the current limits set by tritium beta-decay experiments, mν < 2ev . from the first two phases of project 8 we move to a novel design consisting o... | project 8, phase iii design: placing an ev-scale limit on the neutrino mass using cyclotron radiation emission spectroscopy |
the deep underground neutrino experiment (dune) is a long-baseline neutrino oscillation experiment with primary physics goals of determining the neutrino mass hierarchy and measuring δcp with sufficient sensitivity to discover cp violation in neutrino oscillation. cp violation sensitivity in dune requires careful under... | dune strategy for controlling systematic uncertainties |
project 8 is a tritium endpoint mass experiment aiming for sensitivity to the whole neutrino mass range allowed by the inverted hierarchy. the proof of concept for cyclotron radiation emission spectroscopy (cres) as a novel technique for measuring electron energies has been demonstrated through spectroscopy of monoener... | a phenomenological model for electron kinematics in the project 8 experiment |
the hunt for new physics beyond the standard model has motivated exciting nuclear physics experiments that seek to: uncover new sources of charge-parity violation required for baryogengesis, reveal if neutrinos are their own antiparticle, determine the neutrino mass scale and hierarchy, investigate the properties of an... | instrumentation for physics beyond the standard model overview |
we give a review on neutrino models in which majorana neutrino masses are generated radiatively through loop diagrams. in particular, we concentrate on the two-loop models which contain extra doubly charged singlet φ and triplet δ scalars beyond the standard model so that the new yukawa ψ {bar{ℓ}}_{r}^{c} ℓ_{r} and eff... | generating majorana neutrino masses with loops |
neutrino physics and dark matter searches play a crucial role in nowadays particle and astroparticle physics. the present review paper will describe general properties of neutrinos and neutrino mass phenomenology (dirac and majorana masses). space will be dedicated to the experimental attempts to answer the question of... | status and perspectives of neutrino physics at present and future experiments |
the numi off-axis neutrino appearance experiment (nova) is designed to study neutrino oscillation in the numi (neutrinos at the main injector) beam. nova observes neutrino oscillation using two detectors separated by a baseline of 810 km; a 14 kt far detector in ash river, mn and a functionally identical 0.3 kt near de... | muon neutrino disappearance in nova with a deep convolutional neural network classifier |
thanks to the excellent energy resolution, high efficiency and versatility, bolometric detectors are primed for the search of neutrinoless double-beta decay (0 ν dbd). the most advanced bolometric experiment, cuore, is studying the 0 ν dbd of 130te using a 741kg array of teo2 crystals. cuore points to a 90% cl sensitiv... | present and future of double-beta decay searches with bolometric detectors |
the enriched xenon observatory (exo) is searching for the lepton-number violating double beta decay (0 νββ) in 136xe. if experimentally confirmed, 0 νββ will require the neutrino to be a majorana particle, and shed light on the neutrino-mass hierarchy. the currently running exo-200 experiment has obtained the limit of ... | ba-ion extraction and identification from high pressure xenon gas for nexo |
we present an overview of the project 8 experiment, a concept for the next-generation direct neutrino mass measurement after katrin, with a sensitivity goal to cover the range of neutrino masses allowed by the inverted mass hierarchy. project 8 is a tritium endpoint experiment based on cyclotron radiation emission spec... | overview of the project 8 experiment |
the noνa experiment is a long-baseline accelerator-based neutrino oscillation experiment. it uses the upgraded numi beam from fermilab and measures electron-neutrino appearance and muon-neutrino disappearance at its far detector in ash river, minnesota. goals of the experiment include measurements of θ13, mass hierarch... | noνa neutrino experiment |
i discuss dynamical generation of neutrino masses in unconventional scenarios where the background space-time geometry plays a crucial role. i discuss two types of backgrounds: (i) lorentz violating and (ii) geometries with torsion. in the former case, the violation of lorentz symmetry, at a scale m, may be viewed as a... | some novel ways for neutrino mass generation |
the deep underground neutrino experiment (dune) is a long-baseline neutrino oscillation experiment with primary physics goals of determining the neutrino mass hierarchy and measuring δc p with sufficient sensitivity to discover cp violation in neutrino oscillation. cp violation sensitivity in dune requires careful unde... | long-baseline neutrino oscillation at dune |
we analyze a neutrino mass model in which neutrino masses arise radiatively at two-loop level with leptoquarks exchange. this model is known for its ability to explain the smallness of neutrino mass with tev scale leptoquarks and to predict the hierarchy of neutrino mass, thanks to the charged-fermion masses entering t... | neutrino oscillation parameters in a two-loop neutrino mass model with leptoquarks |
the jiangmen underground neutrino observatory (juno), a 20 kton multi-purpose underground liquid scintillator detector in jiangmen city, guangdong province, china, aims to determine the neutrino mass hierarchy by detecting antineutrinos from nuclear power plants. the juno detector consists of a central detector (cd), a... | earth magnetic field compensation coils system for juno |
nova is a long baseline neutrino oscillation experiment using two functionally equivalent detectors to make precision neutrino oscillation measurements utilizing the numi beam at fermilab. the two detectors are situated 14 mrad off the beam axis, one located at fermilab and the second located 810 km away in minnesota. ... | systematic uncertainties for the nova oscillation analyses |
neutrinoless double beta decay (0ν β β) is a rare nuclear transition that if it occurs at all it will be very important for the exploration of the inverted hierarchy region of the neutrino mass pattern. the cryogenic underground observatory for rare events (cuore) is an experiment that aims to search for such a transit... | status of cuore experiment and latest results from cuore-0 |
we investigate the impact of a light sterile neutrino 1ev on the prospective data expected from currently running long-baseline experiment nova and future experiment dune. if an ev scale sterile neutrino exists, and has non-zero mixing with the other neutrinos then nature of the predictions for the mass hierarchy (mh),... | the 3+1 model at nova and dune |
nova is a long-baseline neutrino experiment. its physics goal is to measure θ23 and δcp values and to determine the mass hierarchy of neutrinos. nova has two functionally identical detectors, both of which are fine segmented and filled by liquid scintillator. in nova oscillation analyses, the systematic uncertainty con... | cherenkov light in liquid scintillator at the nova experiment |
the standard model of particle physics is assumed to be a low-energy effective theory with new physics theoretically motivated to be around tev scale. the thesis presents theories with new physics beyond the standard model in the tev scale testable in the colliders. work done in chapters 2, 3 and 5 in this thesis prese... | new physics at the tev scale |
we present a mathematical framework for constructing the most general neutrino mass matrices that yield the observed spectrum of light active neutrino masses in conjunction with arbitrarily many heavy sterile neutrinos, without the need to assume a hierarchy between dirac and majorana mass terms. the seesaw mechanism i... | general approach to neutrino mass mechanisms with sterile neutrinos |
intensity frontier experiments are often evaluated by the smallest coupling it can probe, irrespective of what particle can be found or the scientific significance of its detection. in this work, we propose a new framework that determines the number of events required to characterize new particle properties. for exampl... | new physics at the intensity frontier: how much can we learn and how? |
as an extension of the standard model (sm), the 3hdm (three-higgs-doublet model) defines additional relationships among the fermions. in the visible leptonic yukawa sector of a minimal 3hdm, we determine and classify the existing flavor symmetries under discrete non-abelian groups up to order 1032. the three higgs doub... | flavor symmetries in the leptonic yukawa sector of the 3hdm |
we investigate type-i seesaw models where the right-handed neutrino masses are dynamically generated by strong interactions. using horizontal gauge symmetry as the source of strong dynamics, a nontrivial flavor structure can also be introduced dynamically. we find that the right-handed neutrino mass matrix with a stron... | dynamical origin of type-i seesaw with large mixing |
the nexo collaboration is actively engaged in r&d towards a very large detector for neutrinoless double beta decay of 136xe. the nexo detector is rooted in the current exo-200 program, which has reached a sensitivity for the half-life of the decay of 1 . 9 ×1025 y with an exposure of 100 kg-y. the baseline nexo des... | the next generation neutrinoless double-beta decay experiment nexo |
nexo is a proposed 5 ton lxe neutrino-less double beta decay (0 νββ) experiment to discover whether neutrinos are majorana particles. nexo is one of the most sensitive proposed ton-scale 0 νββ experiments. with a projected half-life sensitivity of about 1028 years, it can cover the entire ν inverted mass hierarchy. thi... | r&d on ba-tagging for nexo using electron microscopy |
we propose a non-universal $u(1)_{x}$ extension to the standard model with three families and an additional global anomala peccei-quinn (pq) symmetry. the breaking of the former allows us to give masses to the exotic fermionic sector and the later generates the necessary zeros in the mass matrices to explain the fermio... | a $u(1)_{x}$ extension to the sm with three families and peccei quinn symmetry |
the neutrino process ($\nu$-process) for the production of 7li and 11b in core-collapse supernovae (sne) is extensively investigated. initial abundances of s-nuclei and other physical conditions are derived from an updated calculation of the sn 1987a progenitor. the nuclear reaction network including neutrino reactions... | effects of the metallicity on li and b production in supernova neutrino process |
the dune experiment is a future long-baseline neutrino oscillation experiment aiming at measuring the neutrino cp-violating phase and establishing the neutrino mass hierarchy, as well as at a rich physics programme from supernovae over low-energy physics to beyond standard model searches. the baseline technology for th... | the dune vertical drift tpc |
we study flavor phenomenologies in a basis of a double covering of modular $a_4$ group with a hidden $su(2)$ symmetry, in which we work on regions at nearby two fixed points and three special points. these special points of $sl(2,\mathbb{z})$ moduli space are statistically favored in flux compactifications of type iib ... | novel moduli space in modular flavor models : a case study for modular $t'$ seesaw model with hidden $su(2)$ gauge symmetry |
the neutrino option is a scenario where the higgs mass is generated at the same time as neutrino masses in the type-i seesaw model. this framework provides a dynamical origin for the scalar potential of the standard model and suggests a new approach to the hierarchy problem. here we review the preliminary analysis of r... | the neutrino option |
we explore a possible explanation for the hierarchy in scale between the atmospheric and solar neutrino mass differences ($\lvert \delta m^{2}_{31} \rvert$, and $\delta m^{2}_{21}$) through the presence of two distinct neutrino mass mechanisms from tree- and one-loop-level contributions. we demonstrate that the ingredi... | neutrino mass hierarchy from the discrete dark matter model |
jiangmen underground neutrino observatory (juno) is the next generation neutrino experiment which aims at neutrino mass hierarchy problem along with many other cutting-edge studies concerning neutrinos. located 700m underground in jiangmen china, juno's central detector is an acrylic sphere filled with 20kt liquid scin... | analysis of light attenuation length measurement of a high quality linear alkylbenzene for the juno experiment |
in this work, we investigate how multinucleon enhancement and rpa (random phase approximation) suppression can affect the measurement of three unknown neutrino oscillation parameters - the cp-violating phase $\delta_{cp}$, the octant of the atmospheric mixing angle $\theta_{23}$, and the determination of the mass hiera... | sensitivity of octant of $\\theta_{23}$, cp violation and mass hierarchy in no$\\nu$a with multinucleon and detector effects |
in this paper, we consider a lopsided flavor texture compatible with thermal leptogenesis in partially composite pati--salam unification. the davidson--ibarra bound $m_{\nu r1} \gtrsim 10^9$ gev for the successful thermal leptogenesis can be recast to the froggatt--nielsen (fn) charge of the lopsided texture. we found ... | lopsided texture compatible with thermal leptogenesis in partially composite pati--salam unification |
large magneto-electric effect in multi-ferroics and topological protection against decays of excited magnetic skyrmions are an ideal setting for detecting radiative emission of neutrino pair (renp). we propose a new renp scheme using multi-ferroic magnetic skyrmion condensates in order to determine the absolute neutrin... | magnetic skyrmions as host of neutrino mass spectroscopy |
we investigate a 5d gauge theory on s1 with point interactions. the point interactions describe extra boundary conditions and provide three generations, the charged lepton mass hierarchy, the lepton flavor mixing and tiny degenerated neutrino masses after choosing suitable boundary conditions and parameters. the existe... | realization of the lepton flavor structure from point interactions |
we revisit the possibility of relating lepton mixing angles with lepton mass hierarchies in a model-independent way. guided by the existence of such relations in the quark sector, we first consider all the mixing angles, both in charged lepton and neutrino sectors to be related to the respective mass ratios. this allow... | relating lepton mixing angles with lepton mass hierarchy |
scenarios where left- and right-handed sneutrinos mix and the lightest mixed one act as a thermal dark matter candidate can solve the dark matter, neutrino mass, and hierarchy problems simultaneously. we focus on the dark matter mass region of the order of 1 gev, where dark matter direct detections are insensitive. we ... | phenomenological constraints on light mixed sneutrino wimp scenarios |
we analyse a flavour model for a lepton sector which is based on type i seesaw mechanism, a z_2 symmetry for lepton flavours, a mu-tau interchange symmetry and a cp symmetry. this model fits well the data of neutrino mass squared differences and oscillation angles. the model predicts an overall neutrino mass scale for ... | a minimal seesaw model with the mu-tau symmetry |
the majorana collaboration is constructing the majorana demonstrator, an ultra-low background, 40- kg modular hpge detector array to search for neutrinoless double beta decay in 76ge. in view of the next generation of tonne-scale ge-based 0νβ β-decay searches that will probe the neutrino mass scale in the inverted-hier... | analysis techniques for background rejection at the majorana demonstrator |
in the framework of a complete vector-like and universal gauged su(3)_f family symmetry, we report a global region in the parameter space where this approach can account for a realistic spectrum of quark masses and mixing in a 4 x 4 non-unitary v_{ckm}, as well as for the known charged lepton masses and the squared neu... | quark and lepton masses and mixing from a gauged su(3)_f family symmetry with a light o(ev) sterile dirac neutrino |
left-right symmetric theories solve the strong cp problem and explain the small higgs quartic coupling at high energy scales via the higgs parity mechanism, which forces the higgs quartic coupling to vanish at the left-right symmetry breaking scale. they also predict three right-handed neutrinos; one may be stable and ... | sterile neutrino dark matter and leptogenesis in left-right symmetric theories |
the t2k long-baseline neutrino-oscillation experiment accumulated approximately 11.0x10^20 pot (protons on target) data until june 2015. the results of \nu_e appearance as well as \nu_\mu disappearance for 6.57x10^20 pot neutrino beam data are reported. a comparison with the results of reactor \nu_e disappearance exper... | current status of the t2k experiment |
the discovery of a majorana neutrino would be revolutionary with far-reaching consequences in both particle physics and cosmology. the only feasible experiments to determine the majorana nature of the neutrino are searches for neutrinoless double-beta decay. the next generation of double-beta decay experiments are bein... | discovering the majorana neutrino: the next generation of experiments |
the proposed magnetized iron calorimeter detector (ical) to be built in the india-based neutrino observatory (ino) laboratory aims to study atmospheric neutrinos and its properties such as precision measurements of oscillation parameters and the neutrino mass hierarchy. high energy charged current (cc) interactions of ... | simulation analysis with rock muons from atmospheric neutrino interactions in the ical detector at the india-based neutrino observatory |
neutrino oscillations, first measured in 1998 via atmospheric neutrinos, have provided the only current direct evidence for physics beyond the standard model of elementary particles. the full neutrino mixing, described by six parameters, has been measured in the last decade with the exception of the charge-parity phase... | future atmospheric neutrino measurements with pingu |
we demonstrate that the application of an external magnetic field could lead to an improved background rejection in neutrinoless double-beta (0νββ) decay experiments using a high-pressure xenon (hpxe) tpc. hpxe chambers are capable of imaging electron tracks, a feature that enhances the separation between signal events... | improved background rejection in neutrinoless double beta decay experiments using a magnetic field in a high pressure xenon tpc |
km3net is a large research infrastructure, that will consist of a network of deep-sea neutrino telescopes in the mediterranean sea. the main objective of km3net is the discovery and subsequent observation of high-energy neutrino sources in the universe. a further physics perspective is the measurement of the mass hiera... | km3net |
introducing, in the underlying gauge theory of the standard model, the frame vectors in internal space as field variables (framons), in addition to the usual gauge boson and matter fermions fields, one obtains: the standard higgs scalar as the framon in the electroweak sector; a global su∼(3) symmetry dual to colour to... | the framed standard model (i) — a physics case for framing the yang-mills theory? |
in late 2012 the us department of energy gave approval for the first phase of the long-baseline neutrino experiment (lbne) that will conduct a broad scientific program including neutrino oscillations, neutrino scattering physics, search for baryon violation, supernova burst neutrinos and other related astrophysical phe... | future long-baseline neutrino oscillations: view from north america |
with 741 kg of teo2 crystals and an excellent energy resolution of 5 kev (0.2%) at the region of interest, the cuore (cryogenic underground observatory for rare events) experiment aims at searching for neutrinoless double beta decay of 130te with unprecedented sensitivity. expected to start data taking in 2015, cuore i... | cuore-0 results and prospects for the cuore experiment |
we investigate the properties of neutrino mass matrices that incorporate texture zeros and generalized cp symmetries associated with tribimaximal mixing. by combining these approaches, we derive predictive neutrino mass matrices and explore their implications for mass hierarchies, mixing angles, and cp-violating phases... | neutrino mass matrices with generalized cp symmetries and texture zeros |
we present an alternative scheme to provide an anomalous smallness of the dirac neutrino mass. the multiplicative lagrangian model of the higgs field plays an essential role in explaining a huge difference between the mass of the charged leptons and dirac neutrinos while the ratio of yukawa coupling between these two g... | the natural smallness of dirac neutrino mass from the multiplicative lagrangian |
in this paper, we concisely represent the general solution for the tm$_{1,2}$ mixing in the type-i minimal seesaw mechanism and show phenomenological constraints of the yukawa matrix of neutrinos $y$. first, conditions of $z_{2}$ symmetry associated with tm$_{1,2}$ restrict two complex parameters. in addition, three co... | general solutions for tm$_{1,2}$ mixing in the minimal type-i seesaw mechanism and phenomenological constraints to yukawa matrix of neutrinos |
we discuss an $su(5)$ grand unified theory (gut) based on the 10d orbifold $(\mathbb{t}^2)^3/(\mathbb{z}_4\times\mathbb{z}_2)$ plus three modular $s_4$ groups with moduli at respective fixed points $i,i+2,\omega=e^{2i\pi/3}$. the resulting model has hierarchical quark and charged lepton mass matrices, arising from a do... | orbifold modular gut of flavour |
we predict the low energy signatures of a flipped $su(5) \times u(1)_{\chi}$ effective local model , constructed within the framework of f$-$theory based on $ a_{4} $ symmetry. the flipped su(5) model from f theory in the field of particle physics is prominent due to its ability to construct realistic four$-$dimensiona... | fcncs, proton stability, $ g_{\\mu}-2$ discrepancy, neutralino cold dark matter in flipped $su(5) \\times u(1)_{\\chi}$ from $f$ theory with $ a_{4} $ symmetry |
building an organized yukawa structure of quarks and leptons is an essential mission to understand fermion mass hierarchy and flavor mixing in particle physics. inspired by the similarity of ckm and pmns mixings, a common mass pattern for up-type and down-type quarks, charged leptons, and dirac neutrinos is realized in... | decoding fermion mass pattern from mass hierarchy |
neutrino oscillations change when in media in comparison to vacuum oscillations due to the scattering of neutrinos on matter constituents, electrons particularly. this can be easily described by introducing new effective matter mixing angles and squared mass-splittings. exploiting the matter effects and subsequent enha... | effects of matter in neutrino oscillations and determination of neutrino mass hierarchy at long-baseline experiments |
we consider a modified randall-sundrum (rs) framework between the planck scale and the gut scale. in this scenario, rs works as a theory of flavour and not as a solution to the hierarchy problem. the latter is resolved by supersymmetrising the bulk, so that the minimal supersymmetric standard model being the effective ... | warped $r-$parity violation |
we study the implication of the most recent cosmological upper bound on the sum of three neutrino masses, on the validity of the golden ratio (gr) neutrino mixings defined at high energy seesaw scale, considering the possibility for generating low energy values of neutrino oscillation parameters through radiative corre... | implication of cosmological upper bound on the validity of golden ratio neutrino mixings under radiative corrections |
we propose a new neutrino flavor model based on $d_{4}\times u(1)$ family symmetry providing predictions for neutrino masses and mixing along with a possible origin of the observed baryon asymmetry of the universe (bau). the tiny neutrino masses are generated through type i seesaw mechanism while the neutrino mixing is... | neutrino mixing with non-zero $\\theta _{13}$ and unflavored leptogenesis from a dihedral flavor symmetry |
it is tempting to interpret the minuscule scale of neutrino masses as a symptom of its radiative origin. in light of the notable leap in precision expected at the future circular collider, we explore areas of the parameter space that can simultaneously support the detectable higgs-strahlung signal with parallel ones fr... | beyond the inert doublet: imprints of scotogenic yukawa interactions at fcc-ee |
the clockwork is an extra-dimensional set-up for generating light particles with exponentially suppressed or hierarchical couplings of light particles with n massive states having comparable masses near the threshold scale of the mechanism in theories which contain no small parameters at the fundamental level. we explo... | majorana neutrinos and clockworked yukawa couplings contribution to nonobservation of the rare leptonic decayli→ljγ, clockwork photon and clockwork graviton |
we propose a non-universal $\mathrm{u}(1)_{x}$ gauge extension to the standard model (sm) and an additional peccei-quinn (pq) global symmetry to study the mass hierarchy and strong cp problem. the scheme allows us to distinguish among fermion families and to generate the fermionic mass spectrum of particles of the sm. ... | from peccei quinn symmetry to mass hierarchy problem |
based on the low-energy effective field theory of d-branes, the mass spectrum of an extended standard model with two-higgs doublets used to generate all the mass terms is investigated. besides the gauge bosons, the fermion mass spectrum is weighted by the higgs vevs with a partial hierarchy and the smallness of neutrin... | on the d-branes standard-like models |
quark and lepton masses and mixings are considered in the framework of the microscopic model. the most general ansatz for the interactions among tetrons leads to a hamiltonian $h_t$ involving dzyaloshinskii-moriya (dm), heisenberg and torsional isospin forces. diagonalization of the hamiltonian provides for 24 eigenval... | on the relations between fermion masses and isospin couplings in the microscopic model |
the feasibility study of an underground laboratory in the polkowice -sieroszowice mine in poland (sunlab) as a host of a far detector in a long-baseline neutrino oscillation experiment was performed. the sunlab location was previously studied under the laguna fp7 project as a location for the underground multipurpose l... | the feasibility study of the long-baseline neutrino oscillation experiment at the sunlab laboratory in poland |
two-loop effects on the right-handed neutrino masses can have an impact on the low-energy phenomenology, especially when the right-handed neutrino mass spectrum is very hierarchical at the cutoff scale. in this case, the physical masses of the lighter right-handed neutrinos can be dominated by quantum effects induced b... | neutrino parameters in the planck-scale lepton number breaking scenario with extended scalar sectors |
we studied the effects of the absolute neutrino mass scale in the scotogenic radiative seesaw model. from a scan over the parameter space of this model, a linear relation between the absolute neutrino mass and the dark sector-higgs coupling $\lambda_5= 3.1\times10^{-9}\ m_{\nu_e}/$ev has been established. with the proj... | dark matter implications of the katrin neutrino mass experiment |
in this work, we pay special attention to establish the crucial role of the casas-ibarra parameterization in the presence of two different orthogonal matrices, r = o eiaand r = o e ain order to investigate the role of dirac cp violation in flavored leptogenesis. by considering these two choices of the r matrix we exami... | flavored leptogenesis and dirac cp violation |
we compare two approaches for determining the generation of lepton asymmetry during production and decay of quasi-degenerate neutrinos, namely the density matrix formalism and a recent proposal which does not involve any counting of neutrino number densities and is based on plugging the resummed propagator in a quantum... | on different approaches to freeze-in and freeze-out leptogenesis with quasi-degenerate neutrinos |
we identify the qcd axion and right-handed (sterile) neutrinos as bound states of an su(5) chiral gauge theory with peccei-quinn (pq) symmetry arising as a global symmetry of the strong dynamics. the strong dynamics is assumed to spontaneously break the pq symmetry, producing a high-quality axion and naturally generati... | a common origin for the qcd axion and sterile neutrinos from su(5) strong dynamics |
m-theory compactified on a g2 manifold with resolved e8 singularity is a promising candidate for a unified theory. the experimentally observed masses of quarks and charged leptons put a restriction on the moduli of the g2 manifold. these moduli in turn uniquely determine the dirac interactions of the neutrinos. in the ... | neutrino mass matrices from localization in m-theory on g2 orbifold |
the ultimate objectives of ongoing and upcoming neutrino experiments are the precise measurement of neutrino mixing parameters and the confirmation of the mass hierarchy. the systematic inaccuracy in the cross-section models introduces inaccuracy in the neutrino mixing parameters estimation. it is important to secure a... | influence of cross-sectional uncertainty on sensitivity studies of dune and t2hk experiments |
a bottom-up approach has been adopted to identify a flavour model that agrees with present experimental measurements. the charged fermion mass hierarchies suggest that only the top yukawa term should be present at the renormalisable level. the flavour symmetry of the lagrangian including the fermionic kinetic terms and... | the data driven flavour model |
neutrinos play an important role in core-collapse supernova events since they are a key piece to understanding the explosion mechanisms. the analysis of the neutrino fluxes can bring answers to neutrino’s related problems e.g., mass hierarchy, spectral splitting, sterile neutrinos, etc. in this work, we study the impac... | neutrino interactions in liquid scintillators including active-sterile neutrino mixing |
a bottom-up approach has been adopted to identify a flavour model that agrees with present experimental measurements. the charged fermion mass hierarchies suggest that only the top yukawa term should be present at the renormalisable level. the flavour symmetry of the lagrangian including the fermionic kinetic terms and... | a bottom-up approach: the data driven flavour model |
this thesis covers a few successes of the sm and its limitations. the limitations implement that the sm must be expanded to explain the observables which can not be addressed by the sm such as mass of neutrinos, a few of anomalies, dm, de, etc. in order to extend the sm, we take the model-dependent approach and a minim... | fermion mass hierarchies from vector-like families and possible explanations for the electron and muon anomalous magnetic moments |
motivated by the dynamical reasons for the hierarchical structure of the yukawa sector of the standard model (sm), we consider an extension of the sm with a complex scalar field, known as `flavon', based on the froggatt-nielsen mechanism. in an effective theory approach, the sm fermion masses and mixing patterns are ge... | exploring freeze-out and freeze-in dark matter via effective froggatt-nielsen theory |
a model of symmetry violation is described for a system that can spontaneously choose the left-handed or right-handed character of weak currents. for the hierarchic structure of fermion mass spectra, such a mirror symmetry system allows reproduction of all qualitative properties of weak mixing matrices for both quarks ... | weak mixing matrix structures in the broken mirror symmetry model |
we review the two-zero mass matrix textures approach for dirac neutrinos with the most recent global fit in the oscillation parameters. we found that three of the 15 possible textures are compatible with current experimental data, while the remaining two-zero textures are ruled out. two textures are consistent with the... | two-zero textures for dirac neutrinos |
the neutrino mass hierarchy determination ($\nu$ mhd) is one of the main goals of the major current and future neutrino experiments. the statistical analysis usually proceeds from a standard method, a single dimensional estimator $(1d-\delta \chi^{2})$ that shows some draw-backs and concerns, together with a debatable ... | statistical issues on the neutrino mass hierarchy with $\\delta \\chi^{2}$ |
the scotogenic model presents an elegant and succinct framework for elucidating the origin of tiny neutrino masses within the framework of the standard model, employing radiative corrections within the domain of the dark sector. we investigate the possibility of achieving low-scale leptogenesis in the singlet-triplet s... | low scale leptogenesis in singlet-triplet scotogenic model |
a flavor structure with minimal parameters is proposed to address the fermion mass hierarchy and flavor mixing for quarks and leptons. yukawa interaction is reconstructed in a new basis to show a common flat structure for up-type quarks, down-type quarks, charged leptons, and dirac neutrinos. a ${so}(2{)}_{{lr}}^{f}$ f... | the minimal flavor structure of quarks and leptons |
quantum decoherence effects in neutrinos, described by the open quantum systems formalism, serve as a gateway to explore potential new physics, including quantum gravity. previous research extensively investigated these effects across various neutrino sources, imposing stringent constraints on the spontaneous loss of c... | effects of quantum decoherence in a future supernova neutrino detection |
we study a different variant of left-right symmetric model, incorporating dirac type neutrinos. in the absence of the bi-doublet scalars, the possibility of a universal seesaw type of mass generation mechanism for all the standard model charged fermions have been discussed. the model has been constructed by extending t... | an alternate left-right symmetric model with dirac neutrinos |
we aim to study the potential of the recently proposed model framework, called technically natural higgs (tnh), in addressing six fundamental problems in particle physics and cosmology. these questions encompass the electroweak (ew) naturalness problem, neutrino mass generation, nature of the inflaton, the matter-antim... | addressing six standard model problems with technically natural higgs models |
nova is a long-baseline neutrino oscillation experiment with two functionally identical detectors that uses fermilab's numi beam. nova is designed to measure the neutrino mixing angles and to discover the neutrino mass hierarchy and probe leptonic cp violation by measuring the oscillation of muon (anti)neutrinos to ele... | determination of data quality for the nova experiment |
neutrons and neutrinos are natural probes for new physics. since they carry no conserved gauge quantum numbers, both can easily mix with the fermions from hidden sectors. a particularly interesting effect is the oscillation of a neutron or a neutrino into a fermion propagating in large extra dimensions. in fact, such a... | kaluza-klein spectroscopy from neutron oscillations into hidden dimensions |
carbon capture and storage (ccs) is a key technology to reduce carbon dioxide (co2) emissions from industrial processes in a feasible, substantial, and timely manner. for geological co2 storage to be safe, reliable, and accepted by society, robust strategies for co2 leakage detection, quantification and management are ... | towards improved monitoring of offshore carbon storage: a real-world field experiment detecting a controlled sub-seafloor co2 release |
past climates and environments experienced by the saharo-arabian desert belt are of prime importance for palaeoclimatic and palaeoanthropological research. on orbital timescales transformations of the desert into a grassland landscape in response to higher precipitation provided "windows of opportunity" for hominin dis... | pluvial periods in southern arabia over the last 1.1 million-years |
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