Conveners
T04: Neutrino Physics: Neutrino mass & properties
- Bjoern Soenke Wonsak (UNI/EXP (Uni Hamburg, Institut fur Experimentalphysik))
T04: Neutrino Physics: Low energy neutrinos
- Justyna Lagoda (NCBJ)
T04: Neutrino Physics: CP-violation and neutrinos
- Stefania Bordoni (Université de Genève)
T04: Neutrino Physics: Sterile neutrinos
- Stefania Bordoni (Université de Genève)
- Justyna Lagoda (NCBJ)
T04: Neutrino Physics: New interactions and neutrinos
- Bjoern Soenke Wonsak (UNI/EXP (Uni Hamburg, Institut fur Experimentalphysik))
T04: Neutrino Physics: HNL/LNV
- Pilar Coloma (Instituto de Fisica Teorica UAM/CSIC)
T04: Neutrino Physics: Neutrinoless double beta decay
- Bjoern Soenke Wonsak (UNI/EXP (Uni Hamburg, Institut fur Experimentalphysik))
T04: Neutrino Physics: Atmospheric and astrophysical neutrinos
- Pilar Coloma (Instituto de Fisica Teorica UAM/CSIC)
T04: Neutrino Physics: Astrophysical neutrinos and cosmology
- Bjoern Soenke Wonsak (UNI/EXP (Uni Hamburg, Institut fur Experimentalphysik))
- Stefania Bordoni (Université de Genève)
T04: Neutrino Physics: R&D projects and neutrino cross sections
- Justyna Lagoda (NCBJ)
We consider the generation of neutrino masses via a singly-charged scalar singlet. Under general assumptions we identify two distinct structures for the neutrino mass matrix. This yields a constraint for the antisymmetric Yukawa coupling of the singly-charged scalar singlet to two left-handed lepton doublets, irrespective of how the breaking of lepton-number conservation is achieved. The...
We will discuss the approach to the flavour problem
based on modular invariance.
In modular-invariant models of flavour,
hierarchical fermion mass matrices may arise
solely due to the proximity of the modulus $\tau$
to a point of residual symmetry.
This mechanism does not require flavon fields, and modular
weights are not analogous to Froggatt-Nielsen charges.
We show that hierarchies...
We propose a model-independent framework to classify and study neutrino mass models and their phenomenology. The idea is to introduce one particle beyond the Standard Model which couples to leptons and carries lepton number together with an operator which violates lepton number by two units and contains this particle. This allows to study processes which do not violate lepton number, while...
The KATRIN experiment is designed to measure the effective electron anti-neutrino mass $m_\nu$ with a sensitivity close to 0.2 eV by investigating the energy spectrum of tritium $\beta$-decay. After a brief introduction of the experiment, we will focus on the results from our second data taking phase which took place in autumn 2019. For this period, the source activity was increased by a...
We continue our discussions [1-4] on neutrino electromagnetic properties. In the present talk we start with a short introduction to the derivation of the general structure of the electromagnetic form factors of Dirac and Majorana neutrinos.
Then we consider experimental constraints on neutrino magnetic and electric dipole moments, electric millicharge, charge radii and anapole moments...
Coherent Elastic Neutrino Nucleus Scattering (CE$\nu$NS) provide a novel window to probe new physics connected with the well established non-vanishing neutrino masses. In this talk we will discuss how in the presence of a transition magnetic moment of neutrinos the CE$\nu$NS experiments have the potential to shed light on the nature of neutrinos: Dirac vs Majorana. In particular, we will take...
STEREO and PROSPECT are very short baseline experiments studying antineutrinos produced by highly-enriched nuclear fuel at the research facilities of Institut Laue-Langevin (Grenoble, France) and Oak Ridge National Laboratory (U.S.A.), respectively. Located at about 10 meters from the reactor cores, they investigate the data-to-prediction deficit called the « Reactor Antineutrino Anomaly » by...
This talk will present the latest neutrino oscillation results from the Daya Bay experiment, which consists of eight functionally identical detectors in three experimental sites at different baselines from six 2.9 GW$_{\mathrm{th}}$ nuclear reactor cores. In 1958 days of operation, Daya Bay has collected the largest sample of inverse beta decay events to date, with close to 4 million candidate...
Jiangmen Underground Neutrino Observatory, or JUNO, is a future multipurpose neutrino experiment currently being built in China. The data taking with a 20 kt detector, filled with liquid scintillator, will start soon. The main physics goals include estimation of the neutrino mass ordering (NMO) with significance of 3 standard deviations and measurement of neutrino oscillation parameters...
The Jiangmen Underground Neutrino Observatory (JUNO) is a next-generation liquid scintillator experiment being built in Guangdong province in China. JUNO's target mass of 20 kton will be contained in a 35.4 m acrylic vessel, itself submerged in a water pool, under about 650 m of granite overburden. Surrounding the acrylic vessel are 17612 20'' PMTs and 25600 3'' PMTs. The main goal of JUNO,...
Geoneutrinos, which are anti-neutrinos emitted from the decays of long-lived radioactive elements inside the Earth, are unique messengers of internal regions of our planet. The Borexino detector, located at Laboratori Nazionali del Gran Sasso in Italy, is able to detect the geoneutrinos through inverse beta decay reaction. This measurement is feasible thanks to the large scintillator target...
The proton-proton (pp) chain and the carbon-nitrogen-oxygen (CNO) fusion cycle process are two processes understood theoretically how stars converted hydrogen to helium. Neutrinos emitted in such processes are the only direct probe of the deep interior of the Sun. Borexino is a liquid scintillator detector targeted at measuring solar neutrinos. It is hosted by the underground INFN Laboratori...
Tokai-to-Kamioka (T2K) is a long baseline neutrino experiment which uses the proton beam at the Japan Particle Accelerator Research Centre (JPARC) to produce a beam of muon neutrinos and antineutrinos. T2K determines neutrino oscillation parameters of interest by comparing the measured neutrino rate and spectrum at a near detector complex, located at JPARC, and at Super-Kamiokande, a...
NOvA is a long-baseline neutrino oscillation experiment. Its large tracking calorimeters can detect and identify muon and electron neutrino interactions with high efficiency. Neutrinos produced by the NuMI beam are detected by a Near Detector, located at Fermilab, and a much larger Far Detector, located 810km away in Ash River, Minnesota. NOvA can measure the electron neutrino and antineutrino...
The Hyper-Kamiokande experiment consists of a 260 kt underground water Cherenkov detector with a fiducial volume more than 8 times larger than that of Super-Kamiokande. It will serve both as a far detector of a long-baseline neutrino experiment and an observatory for astrophysical
neutrinos and rare decays.
The long-baseline neutrino experiment will detect neutrinos originating from the...
The Deep Underground Neutrino Experiment (DUNE) is a next-generation long-baseline neutrino experiment. Its main physics goals are the precise measurement of the neutrino oscillation parameters, in particular the violation of the charge-parity symmetry and the neutrino mass hierarchy, measuring proton decay and BSM physics searches. DUNE consists of a Far Detector (FD) complex with four...
The ESS 5 Megawatt linac will be the world’s most powerful accelerator, enabling with its 1016 2 GeV protons per second the production of the world’s most intense flux, not only of neutrons, but also of neutrinos and muons. This opens unique opportunities for High Intensity Frontier fundamental physics. An EU supported Design Study of an ESS neutrino Super Beam (ESSnuSB) is under way since...
The phenomenon of Neutrino Oscillation has been very well confirmed by a plethora of data; we are now entering a precision era in which the mixing angles and mass differences are going to be measured with unprecedented precision by ongoing and planned experiments. However, the new measurements could reveal that the standard three flavor scenario is not enough for a complete description of...
I will report on the light sterile neutrino search from the first science runs of the KATRIN experiment. Beta-decay electrons from a high-purity gaseous molecular tritium source are analyzed by a high-resolution MAC-E filter down to 40 eV below the endpoint at 18.57 keV. The analysis of the spectral shape of the spectrum near the endpoint leads to an improvement over the previous direct...
The Short-Baseline Near Detector (SBND) will be one of three liquid Argon Time Projection Chamber (LArTPC) neutrino detectors positioned along the axis of the Booster Neutrino Beam (BNB) at Fermilab, as part of the Short-Baseline Neutrino (SBN) Program. The detector is currently in the construction phase and is anticipated to begin operation in the second half of 2022. SBND is characterised...
The ICARUS collaboration employed the 760-ton T600 detector in a successful three-year physics run at the underground LNGS laboratories studying neutrino oscillations with the CNGS neutrino beam from CERN, and searching for atmospheric neutrino interactions. ICARUS performed a sensitive search for LSND-like anomalous νe appearance in the CNGS beam, which contributed to the constraints on the...
We present new results of the DANSS experiment on the searches for sterile neutrinos. They are based on 4 million inverse beta decay events collected at 10.9, 11.9, and 12.9 meters from the reactor core of the 3.1 GW Kalinin Nuclear Power Plant in Russia. The neutrino spectrum dependence on the fuel composition is also presented. We have also measured the reactor power using the IBD event rate...
The SoLid experiment intends to search for active-to-sterile anti-neutrino oscillations at the very short baseline (6.3-8.9 m) of the SCK•CEN BR2 research reactor (Mol, Belgium) to address the so-called “Reactor Anti-neutrino Anomaly”. This anomaly arose from the reevaluation of the predicted reactor anti-neutrino flux which resulted in a deficit observed by very short baseline experiments....
We study the capabilities of the DUNE near detector to probe deviations from unitarity of the leptonic mixing matrix, the 3+1 sterile formalism and NSI in detection and production, clarifying the relation and possible mappings among the three formalisms. We add to the current analyses in the literature the use of the charged current events for the ντ appearance channel and the consideration of...
Neutrino oscillations in matter provide a unique probe of new physics. Leveraging the advent of neutrino appearance data from NOvA and T2K in recent years, we investigate the presence of CP-violating neutrino non-standard interactions in the oscillation data. We first show how to very simply approximate the expected NSI parameters to resolve differences between two long-baseline...
Non-standard neutrino interactions (NSI) arise in various types of new physics. Their existence would change the potential that atmospheric neutrinos encounter when traversing Earth matter and hence alter their oscillation behavior. This imprint on coherent neutrino forward scattering can be probed using high-statistics neutrino experiments such as IceCube and its low-energy extension,...
Flavor-dependent long-range leptonic force mediated by an ultralight and neutral
gauge boson $Z'$ associated with $L_\mu -L_\tau$ symmetry constitutes a minimal
extension of the Standard Model. We study the physical consequences of such
long-range force in the oscillation of terrestrial neutrinos, particularly in $\nu_\mu$ survival channel. We show that the proposed atmospheric neutrino...
MicroBooNE is an 85-ton active mass liquid argon time projection chamber (LArTPC) at Fermilab. Its excellent calorimetry and resolution, along with its exposure to two neutrino beam lines (BNB and NuMI) make it a powerful detector not just for neutrino physics, but also for Beyond the Standard Model (BSM) physics and astroparticle physics. The experiment has competitive sensitivity to heavy...
The FASER$\nu$ detector at the LHC has been designed to study neutrinos at the highest man-made energies. The detector will be located 480 m downstream of the ATLAS interaction point, and will take data starting in 2022. With FASER$\nu$, the three-flavor neutrino cross-sections will be measured in the currently unexplored energy range between 360 GeV and 5 TeV. In particular, tau-neutrino and...
The generation of the neutrino mass is an essential observation from the neutrino oscillation experiments. This indicates a major revision of the Standard Model which initiated with the massless neutrinos. A possible interesting scenario is the seesaw mechanism where SM gauge singlet Right Handed Neutrinos are introduced. Another interesting aspect is the extension of the SM with $SU(2)_L$...
The possibility of new physics in terms of lepton number violating (LNV) interactions is intriguing out of various reasons: LNV could be tightly linked to the generation of neutrino masses of Majorana nature while at the same time having direct implications for the generation of the baryon asymmetry of our Universe. The $K \rightarrow \pi \nu \bar{\nu}$ decay is one of the most promising modes...
Recently Z factories have been proposed with the capability to produce more than 10^12 Z bosons. It has been observed that this opens the possibility to observe the decay of the Z into a light neutrino and a heavy neutrino, Z --> vN, down to very small (10^{-11}) light-heavy neutrino mixing angles and up to masses close to the Z mass. The question of whether the heavy neutrino is a Dirac...
Two of the greatest mysteries that particle physics faces today are the fact that neutrinos have mass and the existence of dark matter. Upcoming experiments are on the horizon attempting to unveil more about both of these, but there is the possibility that we can learn about both in one environment. The Deep Underground Neutrino Experiment, a next-generation experiment planned for the US in...
The GERDA (GERmanium Detector Array) collaboration operated high-purity Ge detectors enriched in $^{76}$Ge at LNGS to search for neutrinoless double beta decay ($0\nu\beta\beta$). An observation would imply both the Majorana nature of neutrinos and the violation of lepton number conservation, with important consequences for the neutrino mass scale, and the matter-antimatter asymmetry in the...
The observation of neutrinoless double-beta ($0\nu\beta\beta$) decay would unequivocally demonstrate that lepton number conservation is violated and that neutrinos are Majorana particles. Such a discovery would have profound consequences for particle physics and cosmology.
The Large Enriched Germanium Experiment for Neutrinoless $\beta\beta$ Decay (LEGEND) collaboration has been formed to...
The NEXT (Neutrino Experiment with a Xenon TPC) collaboration aims at the sensitive search of the neutrino-less double beta decay (ββ0ν) of 136Xe at the Laboratorio Subterraneo de Canfranc (LSC). The observation of such a lepton-number-violation process would prove the Majorana nature of neutrinos, providing also handles for an eventual measurement of the neutrino absolute mass. A first...
The Cryogenic Underground Observatory for Rare Events (CUORE) is the first bolometric experiment searching for 0νββ decay that has been able to reach the one-tonne mass scale. The detector, located at the LNGS in Italy, consists of an array of 988 TeO2 crystals arranged in a compact cylindrical structure of 19 towers. CUORE began its first physics data run in 2017 at a base temperature of...
The Iron Calorimeter (ICAL) detector at the proposed India-based Neutrino Observatory (INO) aims to detect atmospheric neutrinos and antineutrinos separately in the multi-GeV range of energies and over a wide range of baselines. By utilizing its charge identification capability, ICAL can efficiently distinguish $\mu^-$ and $\mu^+$ events. Atmospheric neutrinos passing long distances through...
KM3NeT is the Mediterranean distributed deep-sea research infrastructure, hosting the next-generation Cherenkov detectors for the observation and study of neutrinos in the energy range from few GeV up to few PeV. KM3NeT/ORCA (Oscillations Research with Cosmics in the Abyss), the detector aimed at the study of low energy neutrinos (> 1 GeV), is currently under construction off the coast of...
The high-energy cosmic neutrinos seen by IceCube allow us to perform new, powerful tests of high-energy particle physics and astrophysics. In particular, there is vast potential to perform these tests using the high-energy flavor composition, i.e., the proportion of electron, muon, and tau neutrinos in the high-energy neutrino flux. However, presently, these tests are limited by...
Next generation of neutrino telescopes currently under construction are drastically improving their ability to constrain the annihilation cross-section of dark matter. In this talk after introducing an angular power spectrum analysis method for future sensitivity of a KM3NeT-like neutrino telescope, we will discuss the implications of results on the various particle dark matter models....
Observation of high energy cosmic neutrinos by ICECUBE has ushered in a new era in exploring both cosmos and new physics beyond the Standard Model (SM). In the standard picture, although mostly $\nu_\mu$ and $\nu_e$ are produced in the source, oscillation will produce $\nu_\tau$ {\it en route}. Certain beyond SM scenarios, like interaction with ultralight DM can alter this picture. Thus, the...
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 neutrinos traveling over extragalactic distances. For the first time, we calculate...
RES-NOVA is a new proposed experiment for the hunt of neutrinos from core-collapse supernovae (SN) via coherent elastic neutrino-nucleus scattering (CE$\nu$NS) using an array of archaeological lead (Pb) based cryogenic detectors. The high CE$\nu$NS cross-section on Pb and the ultra-high radiopurity of archaeological Pb enable the operation of a high statistics experiment equally sensitive to...
Cosmology is well suited to study the effects of long range interactions due to the large densities in the early Universe. In this talk, I will explore how the energy density and equation of state of a fermion system diverge from the commonly assumed ideal gas form under the presence of scalar long range interactions with a range much smaller than cosmological scales. In this scenario,...
After some introductory, motivational remarks, our [in collaboration with Bhupal Dev] attempts at confronting these challenges will be discussed in the context of Standard Model and beyond and experimental prospects at existing facilities as well as those being planned in the near future.
[Please note that i am also submitting an abstract for a parallel session talk in the Flavor and CP...
Theia is a proposed large-scale novel neutrino detector, designed with the ability to discriminate between Cherenkov and scintillation signals. The design consists of a cylindrical tank viewed by inward-looking PMTs and filled with a novel target, such as water based liquid scintillator (WbLS) or other scintillator, which would allow simultaneous reconstruction of particle direction from the...
ProtoDUNE-SP and ProtoDUNE-DP are large-scale single-phase and dual-phase prototypes of DUNEs far detector modules, operated at the CERN Neutrino Platform. ProtoDUNE-SP has finished its Phase-1 running in 2020 and has successfully collected test beam and cosmic ray data. In this talk, we will discuss the first results of ProtoDUNE-SP Phase-1's physics performance, ProtoDUNE-DPs design and...
A new opportunity for a possible flagship experiment in Europe opens by exploiting a unique opportunity that has long been hidden in the Chooz site — Europe’s most famous site for reactor neutrino science. The “SuperChooz” project benefits by existence of 2 caverns, formerly hosting the Chooz-A nuclear reactor, built in the 60’s, that are becoming vacant upon its dismantling completion. They...
A detailed understanding of neutrino(ν)-nucleus interactions is essential for the precise measurement of neutrino oscillations at long baseline experiments, such as T2K. The T2K near detector complex, designed to constrain the T2K flux and cross section models, also provides a complementary program of neutrino interaction cross-section measurements. Through the use of multiple target materials...
The Hyper-Kamiokande (HK) experiment will detect neutrinos produced at an upgraded 1.3 MW J-PARC 30 GeV accelerator with a new water Cherenkov detector that is 8 times larger than Super-Kamiokande. This will allow HK to accumulate neutrino events 20 times faster than the currently operating T2K experiment. To take advantage of the high statistics HK will collect, systematic uncertainties on...
As neutrino physics marches towards its goal of percent-level determinations of oscillation parameters, the corresponding theory of neutrinos scattering off nuclei (detector material) must be improved and developed to a sub-percent level of precision. Large logarithms, e.g. $\log(E_\nu/m_e)$, and coherent enhancements, i.e. $Z\alpha/v$, can enhance QED corrections significantly. In this talk...
We show that one of the simplest extensions of the Standard Model, the addition of a second Higgs doublet, when combined with a dark sector singlet scalar, allows us to: i) explain the long-standing anomalies in the Liquid Scintillator Neutrino Detector (LSND) and MiniBooNE (MB) while maintaining compatibility with the null result from KARMEN, ii) obtain, in the process, a portal to the dark...
Neutrino scattering on liquid and solid targets at low energy transfer can serve both as a tool for searching the BSM physics, for example, such as neutrino electromagnetic interactions [1], and as a test of the Standard Model at low-energy scale [2]. At the same time, the theoretical apparatus for low-energy elastic neutrino scattering on electrons and nuclei bound in liquids and solids must...
ESSnuSB is a design study for a future experiment which will measure CP violation in the lepton sector at the second neutrino oscillation maximum. Since the experiment will observe muon neutrino to electron neutrino oscillations, it is important to measure interaction cross section of electron neutrinos with water. For this purpose, neutrino flux at near detector site must be precisely known....
Current limits for the tau-neutrino transition magnetic moment to a sterile
neutrino are far weaker than its electron and muon counterparts. This talk addresses
possible constraints on the transition magnetic moment between the tau neutrino and
an (\mathcal O(\si{MeV})) sterile neutrino at the far-detector of DUNE: the proposed
neutrino-beam experiment at FermiLab. We compare this with...
We have analyzed new contributions to the muon anomalous magnetic moment in a class of models that generates a naturally large transition magnetic moment for the neutrino (needed to explain the XENON1T electron recoil excess). These models are based on an approximate $SU(2)_H$ symmetry that suppresses the neutrino mass while allowing for a large neutrino transition magnetic moment. We have...
This poster will present the measurement on antineutrino flux and the extracted 235U and 239Pu spectra at Daya Bay Reactor Neutrino Experiment. The eight identical detectors, allocated underground in two near sites and one far sites, has operated 1958 days to measure the most precise prompt energy spectrum from six commercial nuclear reactors, each with a thermal power of 2.9GW. The...
A hundred meters downstream within the Booster Neutrino Beam at Fermilab lies the Accelerator Neutrino Neutron Interaction Experiment (ANNIE for short), a 26 ton gadolinium-doped water Cherenkov detector, measuring the neutrino interaction cross section in water and the final state neutron multiplicity as a function of momentum transfer. Besides improving the systematic uncertainties of future...
This talk presents a model of the electron-like excess observed by the MiniBooNE experiment comprising of oscillations involving two new mass states: $\nu_4$, at $\mathcal{O}(1)$ eV, that participates in oscillations, and $\mathcal{N}$, at $\mathcal{O}(100)$ MeV, that decays to $\nu+\gamma$ via a dipole interaction.
Short-baseline oscillation data sets, omitting MiniBooNE appearance data, are...
A detailed understanding of Earth's Matter effect is inevitable to correctly analyze the data from the upcoming high-precision long-baseline experiments to resolve the remaining fundamental unknowns such as neutrino mass ordering, leptonic CP violation and precision measurements of the oscillation parameters. In this paper, for the first time, we explore in detail the capability of Deep...
China has been a stage to a very successful reactor-based neutrino physics program for many years. In this talk, we take a look at the era of Chinese neutrino physics after the conclusion of JUNO and investigate whether there could be a future accelerator-based neutrino experiment in China. We review several notable research laboratory sites that could be considered as candidates for the...
The simplest extension to account for neutrino masses requires the addition of heavy right-handed neutrinos. If these heavy neutrinos have masses up to the GeV escale, they could be produced via mixing at beam-dump experiments in leptonic and semileptonic meson decays. These long lived particles could eventually arrive and decay in the volume of the detector. In this talk, the capability of...
We develop the approach to the problem of neutrino oscillations in a magnetic field introduced in [1] and extend it to the case of three neutrino generations. The theoretical framework suitable for computation of the Dirac neutrino spin, flavour and spin-flavour oscillations probabilities in a magnetic field is given. The closed analytic expressions for the probabilities of oscillations are...
The poster presents a joint determination of the reactor antineutrino spectra resulting from the fission of $^{235}$U and $^{239}$Pu by combining the Daya Bay and PROSPECT experiments. In the Daya Bay experiment, the antineutrinos were generated by six low enriched uranium (LEU) nuclear commercial reactors with 2.9 GW thermal power each and detected by eight antineutrino detectors deployed in...
The search for neutrinoless double beta decay could cast light on one critical piece missing in our knowledge i.e. the nature of the neutrino mass. Its observation is indeed the most sensitive experimental way to prove that neutrino is a Majorana particle. The observation of such a potentially rare process demands a detector with an excellent energy resolution, an extremely low radioactivity...
As a function of the baseline L, neutrino oscillation probabilities are linear combinations of $\sin^2(\omega L)$ and $\sin(2\omega L)$, with oscillation frequencies $\omega$ that depend on the neutrino energy. Even though the frequencies depend on the oscillation model, in general the presence of L-odd terms in the probability requires the existence of Time Reversal Violation. We propose a...
The phenomenon of neutrino oscillations emerges due to coherent superposition of neutrino mass states. An external environment can modify a neutrino evolution in a way that the coherence will be violated. Such violation is called quantum decoherence of neutrino mass states and leads to the suppression of flavor oscillations. In our previous paper [1], we presented a new theoretical framework,...
The nonzero neutrino masses open a door for neutrino electromagnetic interactions [1]. We study how these interactions may manifest themselves in elastic neutrino-nucleon and neutrino-nucleus scattering processes. Following our approach developed for the case of elastic neutrino-electron [2] and neutrino-proton [3] collisions, in our formalism we account for possible electromagnetic form...
The recent tension between local and early measurements of the Hubble constant can be explained in a particle physics context. A mechanism is presented where this tension is alleviated due to the presence of a Majoron, arising from the spontaneous breaking of Lepton Number. The lightness of the active neutrinos is consistently explained. Moreover, this mechanism is shown to be embeddable in...
The effect of neutrino quantum decoherence has attracted a growing interest during the last 15 years. The most of already performed studies deal with searches of neutrino quantum decoherence in the terrestrial reactor and solar neutrino experiments. The forthcoming large volume neutrino detectors (e.g., JUNO, Hyper-Kamiokande and DUNE) will provide a new frontier in high-statistics...
We present a detailed analysis of the neutrino spin oscillations in magnetized moving and polarized matter. New phenomena of the resonant amplification of neutrino spin oscillations induced by the transverse component of the matter polarization are considered. In this contribution, a generalization is made in respect to our previous studies [1,2] and the effects of the transversal magnetic...
I will discuss a new Occam’s razor setup in the minimal type-I seesaw framework with maximally-restricted texture-zero Yukawa and mass matrices. In this setup, we include charged-lepton mixing parametrized by a single angle, which is predicted to be very close to the quark Cabibbo angle. In this case, compatibility with normally-ordered neutrino masses (currently preferred by data) is achieved...
In current and future long baseline experiments on neutrino oscillation, nuclear effects in neutrino interactions are one of the principal sources of systematic uncertainties. Our present understanding of these effects is still insufficient. Another source of uncertainty is the energy dependence of neutrino oscillation probability which is a nontrivial function of the true incoming neutrino...
The Jiangmen Underground Neutrino Observatory (JUNO) currently under construction in China, will be the first multi-kton liquid scintillator detector and has a vast potential for new insights into several fields of neutrino and astroparticle physics. To reach its design sensitivity for detecting reactor and solar neutrinos, a radiopure liquid scintillator is required. For IBD measurements, a...
This poster presents a novel correlated background present in the antineutrino detection using the inverse beta decay reaction. Spontaneous fissions and (α, n) reactions in peripheral materials of the antineutrino detector, such as borosilicate glass of photomultipliers and electronics boards, produce fast neutrons and prompt gamma rays. If the shielding from the material to the detector...
The India-based Neutrino Observatory (INO) collaboration, a multi-institutional effort to build a
50 kton magnetised Iron Calorimeter (ICAL) for studying neutrino oscillations. The magnetic
field in the ICAL, induced by copper coils, will be a crucial input for the track fitting algorithms that reconstruct the four-momenta of atmospheric neutrinos. So far, the magnetic field map is obtained...
Along with other experiments, the Daya Bay Reactor Neutrino Experiment has searched for light sterile neutrino mixing, using electron antineutrino disappearance. Through comparing a 1230-day sample to prediction, assuming a 3+1 neutrino model, Daya Bay set the most stringent limits to date on the mixing of sterile neutrinos for $2\times 10^{-4}\, < \Delta m^2_{41} < 0.3$ eV$^2$. A joint...
Lorentz invariance is one of the fundamental propositions of quantum field theory (QFT). In some string theory models, Lorentz symmetry may break spontaneously at very high energy scales (Planck scale). In the Standard Model Extension (SME) of particle physics, one can study the effects of Lorentz Invariance Violation (LIV) in a perturbative method.
The present and future long-baseline...
The Electron Capture in $^{163}$Ho experiment, ECHo, is a running experiment for the determination of the neutrino mass scale via the analysis of the end point region of the $^{163}$Ho electron capture spectrum. In the first phase, ECHo-1k, about 60 MMCs pixels enclosing $^{163}$Ho ions for an activity of about 1Bq per pixel have been operated for several months. The goal of this first phase...
The ENUBET experiment, included in the CERN Neutrino Platform effort as NP06/ENUBET, is developing a new neutrino beam based on conventional techniques in which the flux and the flavor composition are known with unprecedented precision ($\mathcal{O}$(1%)). Such a goal is accomplished monitoring the associated charged leptons produced in the decay region of the ENUBET facility. Positrons and...
