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the current generation of bolometric 0 νββ experiments, including cuore, expect degraded alpha recoils to be the dominant background restricting experimental sensitivity. the cupid project will aim to improve the sensitivity of cuore by over an order of magnitude, and search for 0 νββ in the entire region of parameter ... | design of athermal phonon light detector for reducing alpha recoil background of next-gen cuore 0 νββ experiment |
the future neutrino experiment juno (jiangmen underground neutrino observatory) will determine the neutrino mass hierarchy by observing reactor neutrinos in liquid scintillator. to reach the required energy resolution of 3% @ 1mev, a very good liquid scintillator transparency (attenuation length ≥ 20 m @ 430 nm) is req... | attenuation length monitor for the juno filling system |
nova is the current united states flagship long-baseline neutrino experiment designed to study the properties of neutrino oscillations. it consists of two functionally identical detectors each located 14.6 mrad off the central axis from the fermilab numi neutrino beam. the near detector is located 1 km downstream from ... | a search for sterile neutrinos at the nova far detector |
recent results from the t2k experiment on neutrino oscillation and neutrino interaction physics are presented. details of the project, the current status and future plans are discussed. from a sample of 28νe appearance events t2k reports: sin2 2θ13 =0.140-0.032+0.038 (0.170-0.037+0.045) for normal (inverted) mass hie... | recent highlights from the t2k experiment |
neutrino oscillation experiments proved that neutrinos have mass and this enhanced the interest in neutrinoless double-beta decay ( 0νββ . the observation of this very rare hypothetical decay would prove the leptonic number violation and would give us indications about neutrinos mass hierarchy and absolute mass scale. ... | cuore and cuore-0 experiments |
atmospheric neutrino experiments have the potential to measure the neutrino mixing parameters and mass hierarchy through the observation of earth matter effects. the magnetised iron calorimeter detector (ical) at the india-based neutrino observatory (ino) is one of the best experiments to separate the νμ and ν‾μ with i... | precision measurement of neutrino oscillation parameters @ ino-ical detector |
project 8 is a proposed neutrino-mass experiment using tritium beta decay. the targeted sensitivity of 40 mev, covering the entire mass region allowed in the inverted neutrino mass hierarchy, imposes stringent requirements on all subsystems. in particular, low-noise high-gain amplifiers are needed to collect cyclotron ... | near quantum-noise limited amplifiers for the project 8 neutrino mass experiment |
this thesis discusses the construction of an effective field theory (eft) for non-relativistic majorana fermions, shows how to use it to calculate observables in a thermal medium, and derives the effects of these thermal particles on the cp asymmetry. the methods described in this thesis are the only ones to date that ... | effective field theories for heavy majorana neutrinos in a thermal bath |
hybrid detector technology has the potential to revolutionize next-generation neutrino experimentation. with a powerful design capable of utilizing both cherenkov and scintillation signatures simultaneously for advanced particle detection, hybrid detection provides the exciting prospect to use large-scale neutrino dete... | introducing eos: a hybrid neutrino detection technology demonstrator |
with the discovery of the higgs boson in 2012 by the cms and atlas experiments, searches for new heavy particles have ensued in hope of solving the hierarchy problem. in this talk, i will be discussing the search for the x5/3, a strongly interacting fermionic partner of the top quark with charge +5/3. left-handed and r... | search for heavy fermionic partner of the top quark with charge 5/3 in the single leptonic channel using cms run 2 data |
we investigate neutrinoless double beta (0nββ) decay rates in minimal left-right symmetric models in the presence of relatively light right-handed neutrinos. using an effective field theory approach, we systematically include all contributions in the model as well as the dependence of the decay amplitude on the masses ... | light sterile neutrinos, left-right symmetry, and 0nββ decay |
the t2k neutrino data has already given a hint for the best-fit value of the leptonic cp phase $\delta_{cp}$ as $-90^\circ$. in this paper we ask the question that if this hint is confirmed by the subsequent neutrino and anti-neutrino runs of t2k, then can it also give any information about the other two remaining unkn... | can the hint of $\\delta_{cp}$ from t2k also indicate the hierarchy and octant ? |
the t2k long-baseline neutrino oscillation experiment has observed the disappearance of νμ and the appearance of νe from its νμ beam. since 2010, it has accumulated 6.57 ×1020 protons on target and observed 120νμ and 28νe event candidates. with this dataset, corresponding to only ∼ 8% of its goal pot, t2k has achieved ... | joint νμ disappearance and νe appearance analysis at the t2k experiment using a frequentist approach |
light relics are new degrees of freedom which decoupled from the standard model while relativistic. nearly massless relics will both contribute to the radiation energy budget and, for relics with masses on the ev scale (mev-10 ev), will become non-relativistic before today, behaving as matter instead of radiation. such... | accurately measuring neutrinos and massive light relics using cosmological observables |
new data concerning neutrino oscillations as obtained in the t2k and nova accelerator neutrino experiments are considered. both collaborations reported on a moderate preference for normal mass ordering, but the difference of measured values of cp violating phases δcp amounted to two standard deviations (2σ) and the res... | results of t2k and nova neutrino experiments: neutrino mass ordering and cp symmetry |
neutrino-nucleus cross sections are one of the dominant sources of systematic errors in long-baseline neutrino oscillation experiments. to achieve the goals of precision measurements of the mixing angles and difference of the mass eigenstates squared, and discover the mass hierarchy and cp-violating phase, the underlyi... | future of neutrino interaction models |
in the next decade, a number of experiments will attempt to determine the neutrino mass hierarchy. we will discuss some of the challenges that these experiments will face, focusing on the reactor neutrino experiments at intermediate baselines. here, for example, even a small nonlinear energy response can severely affec... | confidence in the mass hierarchy determination from reactor neutrino experiments |
definitive measurements of the smallest neutrino mixing angle θ13 were made by daya bay, double chooz and reno experiments in 2012, based on the disappearance of electron antineutrinos emitted from reactors. the new generation reactor experiments have significantly improved a sensitivity for θ13 down to the sin2(2θ13) ... | review on θ13 measurements from reactor experiments |
we present an overview of our recent investigations regarding the prospects of ongoing neutrino experiments as well as future experiments in determining few of the most important unknowns in the field of neutrino physics, specifically the neutrino mass ordering and leptonic cp-violation phase. the effect of matter osci... | neutrino experiments: hierarchy, cp, cpt |
after a brief introduction to neutrino oscillation, the article discusses how proposed detectors like pingu and orca can use atmospheric neutrinos in the gev range to determine the neutrino mass hierarchy, one of the crucial unknowns in the neutrino sector of particle physics, and what uncertainties on external input p... | from atmospheric neutrinos to the neutrino mass hierarchy |
in the paradigm of three generations, neutrino mixing is described by three angles and a cp-violating phase. with the recent observation of electron antineutrino disappearance at baselines of 1 to 2 km from groups of reactors, the smallest neutrino mixing angle, θ13, has been unambiguously determined. the rather large ... | measurement of θ13 |
this article illustrates the possibility of investigating mass hierarchy and cp-violating phase \delta^{cp}, in the context of cp trajectory diagrams in the bi-probability plane. separation between normal mass hierarchy (nh) and inverted mass hierarchy (ih) cp trajectory ellipses in the p-p^t plane seems to be very pro... | neutrino mass hierarchy and \\delta^{cp} investigation within the biprobability (p-p^t ) plane |
the jiangmen underground neutrino observatory (juno), a 20ktons multi-purpose underground liquid scintillator detector, was proposed with the determination of the neutrino mass hierarchy as a primary physics goal. due to low background requirement of the experiment, a multi-veto system ,which consists of a water cheren... | the water system and radon measurement system of jiangmen underground neutrino observatory |
we develop a systematic procedure of constructing lepton mass matrices that satisfy all the experimental constraints in the light lepton sector of the minimal left-right symmetric model with type-i seesaw dominance. this method is unique since it is applicable to the most general cases of type-i seesaw with complex ele... | construction of lepton mass matrices and tev-scale phenomenology in the minimal left-right symmetric model |
we use the rotating lepton model (rlm) of elementary particles in conjunction with special relativity and the de broglie equation to compute analytically the masses of neutrinos from the masses of composite particles, such as hadrons, in the structures of which neutrinos have been recently shown to participate. in this... | computation of the masses of neutrinos from the hadron and boson masses via the rotating lepton model of elementary particles |
at present, it is still unknown whether the correct mass ordering of the neutrino mass eigenstates is either $m_1$, $m_2$, $m_3$ (normal hierarchy, nh), or $m_3$, $m_1$, $m_2$ (inverted hierarchy, ih). the new analysis method proposed by stanco et al. (arxiv:1707.07651v3) should fix some issues of the currently most us... | a study about the f-estimator for the neutrino mass hierarchy in the juno experiment |
we construct a renormalizable b-l standard model (sm) extension with d5 symmetry in which neutrino mass hierarchies and the tiny neutrino masses are generated at leading order by type i seesaw mechanism. the obtained physical parameters are well consistent with the global fit of neutrino oscillation data given in [1]. ... | the renormalizable b-l model with d5 discrete symmetry for lepton masses and mixings |
we discuss the possibility that the higgs potential and electroweak scale are generated radiatively in a type-i seesaw scenario. a higgs potential consistent with experimental constraints can be obtained in this hypothesis for a majorana mass scale $m_n\sim 10-500$ pev and with neutrino yukawa couplings of order $|\ome... | the neutrino option |
neutrino oscillation data indicate that $\theta_{23}$ is close to $\pi/4$ and $\theta_{13}$ is very small. a simple $\mu\leftrightarrow\tau$ exchange symmetry of the neutrino mass matrix predicts $\theta_{23}=-\pi/4$ and $\theta_{13}=0$. since the experimental measurements differ from these predictions, this symmetry i... | precision neutrino data confronts $\\mu\\leftrightarrow\\tau$ symmetry |
i discuss a renormalisable model based on $\delta(27)$ family symmetry with an $so(10)$ grand unified theory (gut) with spontaneous geometrical $cp$ violation. the symmetries are broken close to the gut breaking scale, yielding the minimal supersymmetric standard model. low-scale yukawa structure is dictated by the cou... | towards a complete $ \\delta(27)\\times so(10) $ susy gut |
double-beta decay (dbd) is a rare nuclear process of great interest due to its potential to provide information about physics beyond the standard model (bsm). for example, the discovery of the neutrinoless double-beta (0νββ) decay mode could give information about important issues such as possible violations of lorentz... | double-beta decay and its potential to explore beyond standard model physics |
we construct a standard model extension with q 6 flavor symmetry in the framework of sewsaw mechanism in which the inverted neutrino mass spectrumis naturally explained without using perturbation theory. | inverted neutrino mass hierarchy in the standard model with q 6 flavor symmetry |
the first hint of neutrino mass hierarchy is expected to come from the no$\nu$a experiment in fermilab as the present best-fit parameter space i.e., normal hierarchy and $\delta_{cp}=-90^\circ$ is the favourable parameter space for no$\nu$a where there is no degeneracy. but this situation may change if the standard thr... | parameter degeneracy and hierarchy sensitivity of no$\\nu$a in presence of sterile neutrino |
the absence of supersymmetric particles at the weak scale is a puzzle if supersymmetry solves the gauge hierarchy problem. we show that, if the right-handed neutrino masses arise from hidden gaugino condensation via gut-suppressed operators, successful thermal leptogenesis leads to the lower bound on the gravitino mass... | heavy gravitino from dynamical generation of right-handed neutrino mass scale, and gravitational waves |
neutrino mass sum-rule is a very important research subject from theoretical side because neutrino oscillation experiment only gave us two squared-mass differences and three mixing angles. we review neutrino mass sum-rule in literature that have been reported by many authors and discuss its phenomenological implication... | neutrino mass sum-rule and neutrinoless double beta decay |
the b anomalies, by their distinctive flavour structure i.e. $u(2)^5$, bring a new piece to the long-standing flavour puzzle. the three-site flavour non-universal pati-salam (ps) model, which unifies quarks and leptons, provides through the ratios of vacuum expectation values (vev) acquired at different scales, a combi... | flavour non-universal pati-salam unification and neutrino masses |
the juno (jiangmen underground neutrino observatory) experiment is a multi-purpose neutrino experiment designed to determine the neutrino mass hierarchy and precisely measure oscillation parameters. it will be composed of a 20k ton liquid scintillator (ls) central detector equipped with about 18000 20-inch photon-multi... | status of juno simulation software |
nova is a neutrino experiment deployed at fermi national accelerator laboratory (fnal, usa) and designed for studying oscillations—namely, the appearance of electron neutrinos and the survival of muon neutrinos. two detectors, a near and a far one, are separated by a distance of 810 km and are positioned at an angle of... | study of neutrino oscillations in the nova experiment |
in asaka et al (2021 phys. rev. d 103, 015014), asaka, ishida and tanaka put forward an interesting possibility that the neutrinoless double beta decay can be hidden in the minimal seesaw model with the two right-handed neutrinos having a hierarchical mass structure: the lighter one is lighter enough than the typical f... | hiding neutrinoless double beta decay in the minimal seesaw model with the tm1 or μ-τ reflection symmetry |
next generation neutrino oscillation experiments utilize details of hadronic final states to improve the precision of neutrino interaction measurements. the hadronic system was often neglected or poorly modelled in the past, but they have significant effects on high precision neutrino oscillation and cross-section meas... | hadronization processes in neutrino interactions |
the nexo experiment will search for neutrinoless double beta decay (0 νββ), a rare nuclear process that only occurs if neutrinos are majorana particles, using 5 tonnes of isotopically enriched liquid 136 xe. nexo will expand upon the experience of the successful exo-200 experiment, including a scaled up version of an u... | nexo: the next generation neutrinoless double beta decay search |
the hyper-kamiokande (hyper-k) detector is a next generation underground water chrenkov detector. the j-parc to hyper-k experiment has good potential for precision measurements of neutrino oscillation parameters and discovery reach for cp violation in the lepton sector. with a total exposure of 10 years to a neutrino b... | systematic in j-parc/hyper-k |
spin-dependent modes in nuclei are studied by shell-model method with the use of new shell-model hamiltonians which properly take into account important roles of tensor interactions. new hamiltonians can describe spin degrees of freedom in nuclei remarkably well. nuclear weak processes at stellar environments are inves... | shell-model study of spin modes in nuclei and nuclear forces |
this dissertation is a summary of four works investigating questions of flavor in the standard model and beyond. drawing from the ideas of grand unification to unify quarks and leptons, the seesaw mechanism to explain the generation of neutrino masses, as well as the current data available from flavor observables, a fr... | forays in flavor |
we present a global analysis of neutrino oscillation data, including in particular the high-precision measurements of the last sm mixing angle θ13 at reactors, which have confirmed previous indications in favor of θ13 > 0. we focus on the correlations between θ13 and the mixing angle θ23, as well as between θ13 and ... | neutrino oscillation physics |
we study neutrino mass anarchy in the dirac neutrino, seesaw, and double-seesaw models. assuming the anarchy hypothesis, the mass matrices are random and distributed in accordance with the gaussian measure. we focus on the distributions of the mass square ratio of the light neutrinos and examine which of these models s... | neutrino mass square ratio and neutrinoless double-beta decay in random neutrino mass matrices |
motivated by current experiments on searching for neutrinoless double beta decays, we study the phenomenological consequences and testability of the constraint relation "mii =mjj +meμ +meτ", for i , j = e , μ , τ, on the magic neutrino mass matrix elements. this hypothesis is inspired by the μ - τ symmetry and gives ri... | new magic neutrino mass textures with three free parameters |
the observation of cp violation in the long-baseline (lbl) neutrino experiments is complicated by the matter effects, wherein apart from the intrinsic/genuine cp violation the possibility of extrinsic/fake cp violation is also there. using exact expressions of transition probabilities, we study the dependence of genuin... | intrinsic and extrinsic cp violation in long-baseline neutrino experiments |
there is still a problem in neutrino physics related to the configuration of neutrino masses: are neutrinos arranged by masses following the standard model as three generations of fundamental particles, gen iii>gen ii>gen i, thus forming a structural-normal hierarchy, or deviate from that principle? the biggest o... | determining the dirac cp violation phase and neutrino mass hierarchy |
in this thesis, we have studied the possibility to identify one of the right-handed neutrinos entering the type-i seesaw mechanism as a dark matter (dm) candidate, within the warped extra-dimensions paradigm. as a first step, we have reviewed the existing literature on the randall-sundrum scenarios and the goldberger-w... | tev-scale bulk neutrino in warped extra-dimensions as a dm candidate |
there are unanswered questions regarding neutrino physics that are of great interest for the scientific community. for example the absolute masses, the mass hierarchy and the nature of neutrinos are unknown up to now. the discovery of neutrinoless double beta decay (0νββ) would prove the existence of a majorana mass, w... | current experiments in germanium 0 ν β β search -- gerda and majorana |
the juno jiangmen underground neutrino observatory, a 20 kton multi-purpose underground liquid scintillator detector, has been proposed and approved for realization in the south of china. in this work i describe first the broad physics capabilities of the experiment, which include the crucial measure of the neutrino ma... | status and prospects of the juno experiment |
the detection of galactic supernova (sn) neutrinos represents one of the future frontiers of low energy neutrino physics and astrophysics. the neutron coherence of neutral currents (ncs) allows quite large cross-sections in the case of neutron rich targets, which can be exploited in detecting earth and sky neutrinos by... | neutral current coherent cross-sections - implications on detecting sn and earth neutrinos with gaseous spherical tpc's |
first, we see that the observed data of quark and lepton masses and mixings, which has been completed by adding neutrino data, can be a qualitative signature of s u(5) grand unified theory (gut). actually, an assumption, 10 fields induce stronger hierarchy in yukawa couplings than 5 ¯ fields, can explain all hierarchic... | neutrino masses and mixings as an evidence of gut, and the impact to (flavor changing) nucleon decay |
in this thesis we try to discuss certain phenomenological aspects of an r-parity violating non-minimal supersymmetric model, called $\mu\nu$ssm. we show that $\mu\nu$ssm can provide a solution to the $\mu$-problem of supersymmetry and can simultaneously accommodate the existing three flavour global data from neutrino e... | exploring physics beyond the standard electroweak model in the light of supersymmetry |
massive neutrino is an evidence of new physics beyond the standard model. one of the well motivated new physics scenarios is a model with gauged lepton flavor symmetry. we investigate neutrino properties in the minimal su$(3)_\ell\times$su$(3)_e$ gauged lepton flavor model. in this model, three new species of fermions ... | neutrino spectrum in su$(3)_\\ell\\times$su$(3)_e$ gauged lepton flavor model |
we study the time evolution of lepton family number for a neutrino that forms an su(2) doublet with a charged lepton. the lepton family number is defined through a weak basis of the su(2) doublet in which the charged lepton mass matrix is a real and diagonal one. the lepton family number carried by the neutrino is defi... | retracted: lepton number violation in a unified framework |
neutrinoless double beta-decay(dbd) is of current interest in high-sensitivity frontiers of particle physics. the decay is very sensitive to majorana neutrinos masses, neutrino cp phases, right-handed weak interactions and others, which are beyond the standard electro-weal model. dbds are actually ultra-rare events, an... | nuclear and detector sensitivities for neutrinoless double beta-decay experiments |
we report the results of a joint analysis of neutrino and antineutrino oscillations at t2k with the {ν _μ }≤ft( {{{\bar ν }_μ }} \right) disappearance and {ν _μ }≤ft( {{{\bar ν }_μ }} \right) \to {ν _e}≤ft( {{{\bar ν }_e}} \right) appearance channels. the disappearance channel is primarily sensitive to sin2 2θ 23 and t... | results from t2k: a joint analysis of neutrino and antineutrino data |
in this talk the current status of neutrino oscillation parameters are presented. the prospects of determination of neutrino mass hierarchy, octant of θ23 and the cp phase δcp in future long-baseline and atmospheric experiments are reviewed. the impact of precision measurement of oscillation parameters on neutrino mass... | neutrino phenomenology: highlights of oscillation results and future prospects |
using the residual symmetry approach, we propose a complex extension of the scaling ansatz on the neutrino majorana mass matrix m_ν which allows a nonzero mass for each of the three light neutrinos as well as a nonvanishing θ _{13}. leptonic dirac cp violation must be maximal while atmospheric neutrino mixing need not ... | complex scaling and residual flavour symmetry in the neutrino mass matrix |
the development and production of water-based liquid scintillators (wbls) offers the potential to revolutionize next-generation neutrino experiments. this novel detection media, containing both water and organic constituents, produces a combination of scintillation and cherenkov light, with the utilisation of both comp... | the development of slow water-based liquid scintillators for next-generation neutrino experiments |
the km3net collaboration is constructing a research infrastructure hosting a next generation underwater neutrino observatory in the mediterranean sea. it will be a distributed infrastructure with two nodes: orca (mton scale 2500 depth offshore toulon (france)) and arca (gton scale, 3500 m offshore capo passero (italy))... | status of the km3net project |
seesaw mechanism constrains from below mixing between active and sterile neutrinos for fixed sterile neutrino masses. signal events associated with sterile neutrino decays inside a detector at fixed target experiment are suppressed by the mixing angle to the power of four. therefore sensitivity of experiments such as s... | numerical estimate of minimal active-sterile neutrino mixing |
the project 8 experiment aims to determine the mass of the electron anti-neutrino, pushing below the inverted mass hierarchy scale with a sensitivity of 40 mev. in order to achieve this, project 8 uses cyclotron radiation emission spectroscopy (cres) to measure the energy of tritium beta-decay electrons close to the ki... | atomic source development for the project 8 neutrino mass experiment |
the deep underground neutrino experiment (dune) will be a world-class neutrino observatory and nucleon decay detector designed to answer fundamental questions about elementary particles and their role in the universe. my dissertation centers on the implementation of technologies used to detect scintillation photon sign... | neutrino hunting: looking through a uv lens; scintillation photon detection in a large-volume liquid argon time projection chamber, exposed to a multi-gev charged particle beam |
the juno experiment is being built mainly to determine the neutrino mass hierarchy by detecting neutrinos generated in the yangjiang and taishan nuclear plants in southern china. the detector will record 5.6 tb raw data every day for offline analysis, but each day it can only collect about 60 neutrino events scattered ... | parallel processing in data analysis of the juno experiment |
neutrinoless double-beta decay, if detected, would proof the majorana nature of neutrinos. the decay lifetime is governed by the absolute neutrino masses and the nuclear matrix elements of the transition. therefore accurate matrix elements are needed to asses the sensitivity of current and future experiments, and to de... | constraining neutrinoless double-beta decay matrix elements |
within the neutrino community, there has been a recent discussion on the validity of the χ2 approximation when evaluating the results of oscillation experiments sensitive to the neutrino mass hierarchy. in this proceeding, we discuss the resolution of this discussion by going back to the basic statistical definitions i... | mass hierarchy sensitivity at future oscillation facilities |
the t2k experiment has observed the disappearance of muon neutrinos from the j-parc muon-neutrino beam. using data corresponding to 3.01 × 1020 protons on target, 58 muon neutrino event candidates were observed; 205 ± 17 (syst.) events are expected under the no-oscillation hypothesis. a fit to the observed rate and ene... | muon neutrino disappearance at t2k |
we discuss a comprehensive way to study the parameter degeneracies in the form of a generalized degeneracy in the neutrino oscillation experiments. first we describe the various degeneracies by considering only neutrino run of the long baseline experiment (lbl), no$ \nu $a. then we discuss the role of antineutrinos. la... | generalized degeneracies and their resolution in neutrino oscillation experiments |
even though the standard model (sm) of particle physics aligns with many experimental results, the need to expand the sm arises to address important open questions. the most suitable and minimal extension of the sm is the local gauge group $su(3)_c\otimes su(3)_l\otimes u(1)_x$ , which is known as the '3-3-1 model' in ... | is there democracy in leptonic sector of 3-3-1 model |
the km3net collaboration has started the construction of a research infrastructure hosting a network of underwater neutrino detectors in the mediterranean sea. two instruments based on the same technology are being built: km3net/orca to measure the neutrino mass hierarchy and to study atmospheric neutrino oscillations ... | predicted sensitivity of the km3net/arca detector to a diffuse flux of cosmic neutrinos |
a mechanism to generate flavour hierarchy via 5d wave-function localization is revisited in the context of so(10) grand unified theory. in an extra-dimension compactified on an orbifold, fermions (living in the same 16 representation of so(10)) result having exponential zero-modes profiles, localized around one of the ... | order and anarchy hand in hand in 5d so(10) |
neutrinos stand among the least understood particles in the standard model. the intense electron antineutrino flux produced by the beta-decays of fission products in nuclear reactors is a very effective way of learning about these elusive particles. a brief review of the current generation reactor antineutrino experime... | reactor antineutrinos: present and future |
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 |
there seems to be a non-negligible discrepancy between daya bay and t2k experimental results of a neutrino mixing angle, $\theta_{13}$ . we show the discrepancy can be simply passed away even in the standard three neutrinos framework by taking the same value of $\delta m^2_{32}$ with a normal neutrino mass hierarchy an... | what triggers $\\theta_{13}$ discrepancy between daya bay and t2k? |
the legend collaboration aims to explore the range of majorana neutrino masses allowed by the inverted mass hierarchy by building upon the successes of the gerda experiment and the majorana demonstrator in the deployment of a 1000-kg array of germanium detectors enriched in ^{76} ge. the first phase of the legend exper... | legend-200 preliminary design background modeling |
the cryogenic underground observatory for rare events (cuore) is the largest bolometric experiment searching for neutrinoless double beta (0 νββ) decay. if observed 0 νββ could answer fundamental questions that remain about the nature of the neutrino such as the mass hierarchy, whether they are majorana fermions, and w... | current status and results of cuore in the search for neutrinoless double beta decay |
the deep underground neutrino experiment (dune) has a broad physics program that includes determining the neutrino mass hierarchy, measuring delta_cp with sufficient precision to discover leptonic cp violation, making precise measurements of the oscillation parameters governing electron neutrino appearance and muon neu... | dune: status and science |
nova is a long-baseline neutrino oscillation experiment that is designed to probe the neutrino mass hierarchy and mixing structure by looking for a νe appearance signal. it uses two functionally identical liquid scintillator detectors 14mrad off-axis from the numi beamline at fermilab, allowing for a tightly focused νμ... | neutrino energy estimation using cnns in the nova experiment |
it has been shown that neutrino masses can be determined under the particle ansatz. in this paper, we give the general formulas of neutrino masses related to the neutrino oscillation parameters which show that there is a mass hierarchy transition. using the best fit values measured by electron and muon neutrino oscilla... | estimation on the neutrino masses by using neutrino oscillation parameters |
nexo is a next-generation experiment designed to search for neutrinoless double beta decay of the isotope xe-136 in a liquid xenon time projection chamber. positive observation of this decay would determine the nature of the neutrino to be a majorana particle. detecting the presence of the daughter ba-136 at a decay si... | progress in barium tagging on a cryogenic probe for the nexo neutrinoless double beta decay experiment |
a new non-universal abelian extension $\mathrm{g_{sm}}\otimes \mathrm{u(1)}_{x}$ to the standard model free from chiral anomalies is presented. the new $x$ charges distinguish among generations so as the fermion mass matrices get zero-textures from the fermion mass hierarchy can be obtained. regarding to neutrino physi... | a new u(1) model anomaly free for three families to address fermion mass hierarchy and neutrino physics |
assuming a type-i seesaw mechanism for neutrino mass generation and invoking a baryogenesis via leptogenesis scenario, we consider a reasonable hierarchical structure for dirac neutrino mass matrix, similar to up-type quark mass matrix. these hypotheses imply a relevant connection between high scale cp violation and lo... | neutrino phenomenology from leptogenesis |
in this paper, we investigate whether it is possible to determine the neutrino mass hierarchy via a high-statistics and real-time observation of supernova neutrinos with short-time characteristics. the essential idea is to utilize distinct times-of-flight for different neutrino mass eigenstates from a core-collapse sup... | on the possibility to determine neutrino mass hierarchy via supernova neutrinos with short-time characteristics |
nova is an accelerator-based, long-baseline neutrino oscillation experiment designed to probe the mass hierarchy and mixing structure of the neutrino sector. the experiment consists of a near detector at fermilab and a far detector 810 km away in northern minnesota positioned to receive neutrinos from fermilab's numi b... | the design and monitoring of the timing and synchronization system at the nova experiment |
the proposed nexo experiment utilizes a tonne-scale liquid xenon time projection chamber to search for neutrinoless double beta decay in xenon-136. positive observation of this decay would determine the nature of the neutrino to be a majorana particle, as well as measure the absolute neutrino mass scale. a critical con... | barium tagging in solid xenon for the nexo experiment |
we propose a renormalisable model based on δ(27) family symmetry with an so(10) grand unified theory (gut) leading to a novel form of spontaneous geometrical cp violation. the symmetries are broken close to the gut breaking scale to yield the minimal supersymmetric standard model with standard r-parity. low-scale yukaw... | towards a complete δ(27) × so(10) gut of flavour |
the cryogenic underground observatory for rare events (cuore) is a ton-scale bolometric experiment searching for the 0 νββ decay in 130te. it consists of a closely packed array of 988 teo2 crystals (5 × 5 × 5 cm3 each) and will be hosted in one of the largest cryostats ever constructed to reach a base temperature of ~1... | cuore: cryogenic challenges and prospects for a future upgrade |
an animated debate has been ongoing in the neutrino community on how to estimate and quote the expected sensitivity of future long-baseline neutrino experiments to key parameters such as mass hierarchy or cp violation. we will present an overview of some items covered by recent papers and will detail the approach chose... | statistical issues in long baseline neutrino physics |
we obtain democratic mass matrix by using the hypothesis of single right-handed neutrino dominance. by adding perturbation to the democratic mass matrix and constraining mass eigenstates according to experimental fact, we attempt to predict neutrino oscillation parameters. | correction to democratic matrix for neutrino mass hierarchy |
the km3net collaboration started to build a multi-km3neutrino telescope in the mediterranean sea. the telescope is composed of two parts: the arca detector, optimised for searches for high energy neutrino sources in the universe, and orca, for the determination of the mass hierarchy of neutrinos. arca is under construc... | first results of the km3net/arca detector |
cuore is the first ton-scale cryogenic bolometer experiment searching for neutrinoless double-beta decay. the successor to cuore, called cupid, is designed to improve the half-life sensitivity of cuore by almost two orders of magnitude and fully probe the so-called ``inverted hierarchy'' region of the effective majoran... | update on the status of the cupid-mo demonstrator |
project 8 is a tritium beta-decay endpoint experiment which is planned to look for neutrino mass in the range allowed by the inverted mass hierarchy. cyclotron radiation emission spectroscopy is the employed technique for a precise measurement of the energy of relativistic electrons. the technique was demonstrated util... | project 8: first measurement of the tritium beta-decay spectrum using cyclotronradiation emission spectroscopy |
one of the key physics goals of nova is to constrain oscillation parameters such as the octant of θ23, δcp, and the neutrino mass hierarchy via a joint νμ+νe oscillation analysis. we do this by propagating νμs from the world's most powerful neutrino beam at fermilab, over a baseline of 810 km to northern minnesota, usa... | systematic uncertainties and cross-checks for the nova joint νμ+νe analysis |
the standard model of particle physics is a very successful theory of strong weak and electromagnetic interactions. this theory is perturbative at sufficiently high energies and renormalizable, it describes these interactions at quantum level. however it has a number of limitations, one being the fact that it has 28 fr... | fermions masses and texture zero |
beyond the standard model theories like extra-dimensions predict heavy resonances corresponding to a graviton (a spin 2 particle) and can explain the gauge hierarchy problem. at lhc these gravitons can be produced through quark/anti-quark annihilation, gluon fusion, or vector boson fusion (vbf) processes. in scenarios ... | search for vbf bulk graviton decaying to z(nunu)z(qqbar) final state |
km3net is a large research infrastructure, that will consist of a network of deep-sea neutrino telescopes in the mediterranean sea. the main objectives of km3net are the discovery and subsequent observation of high-energy neutrino sources in the universe (arca) and the measurement of the mass hierarchy of neutrinos (or... | km3net: astroparticle and oscillations research with cosmics in the abyss |
we consider how the effect of anderson localisation in a one-dimensional, disordered lattice can be applied to generate exponential hierarchies amongst the couplings of 4d field theories. this may have applications in the study of beyond the standard model physics; we give a proof-of-concept model for the generation of... | generating hierarchies with anderson localisation |
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