Conveners
Neutrino Physics - Posters: Block I
- Jaroslav Zalesak (Czech Academy of Sciences (CZ))
Neutrino Physics - Posters: Block II
- Renato Fonseca (IPNP, Charles University, Prague)
Neutrino Physics - Posters: Block IV
- Renato Fonseca (IPNP, Charles University, Prague)
Neutrino Physics - Posters: Block III
- Jaroslav Zalesak (Czech Academy of Sciences (CZ))
The effect of neutrino quantum decoherence has attracted a growing interest during the last 15 years. Most of already performed corresponding studies deal with searches of neutrino quantum decoherence in terrestrial reactor and solar neutrino experiments (see, for example, [1]). The forthcoming new large volume neutrino detectors (e.g. JUNO, DUNE and Hyper-Kamiokande), will provide a new...
We consider a version of Left-Right Symmetric Model in which the scalar sector consists of a Higgs bidoublet ($\Phi$) with $B-L=0$, Higgs doublets ($H_{L,R}$) with $B-L=1$ and a charged scalar ($\delta^+$) with $B-L=2$ leading to radiatively generated Majorana masses for neutrinos and thereby, leads to new physics contributions to neutrinoless double beta decay ($0\nu \beta \beta$). We show...
We study the new physics contributions to neutrinoless double beta decay ($0\nu\beta\beta$) in a TeV scale left-right model with spontaneous D-parity breaking mechanism where the values of the $SU(2)_L$ and $SU(2)_R$ gauge couplings, $g_L$ and $g_R$ are unequal. Neutrino mass is generated in the model via gauge extended inverse seesaw mechanism. We embed the model in a non-supersymmetric...
We develop a basic theoretical apparatus for the search of electromagnetic neutrino interactions in experiments on elastic neutrino-nucleus scattering [1]. Using our approach developed for the case of elastic neutrino-electron collisions in [2], we take into account all electromagnetic form factors of massive neutrinos [3] in the present treatment. In this contribution we focus on elastic...
Searching for the cosmological origin, constituents and the interactions of dark matter
has been a great challenge to the fundamental science today. With the motivation of connecting dark matter phenomenology with neutrino, we have chosen inverse seesaw ISS (2,3) framework which is the extension of the standard model by the addition of two right handed neutrinos and three sterile fermions....
We present an analysis of a neutrino flux evolution in an extreme astrophysical environment peculiar to supernovae accounting for effects of an arbitrarily moving media and a strong magnetic field. For neutrinos propagating inside a supernova the resonances in the flavour and spin-flavour oscillations engendered by the neutrino magnetic moment interaction with a magnetic field and weak...
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...
It is believed that the running (for instance, COHERENT) and forthcoming terrestrial neutrino experiments will be sensitive to the neutrino charge radius [1] that is one of the neutrino fundamental electromagnetic characteristics [2] predicted [3] to be non-zero even in the Standard Model. In this work we derive the neutrino evolution equation accounting for charge radii for the case of the...
The Scotogenic model is a minimal extension of Standard Model by three neutral singlet fermions($N_{k}$) and an inert scalar doublet($\eta$) which are $Z_{2}$ odd.Considering this model,we choose the lightest neutral scalar($\eta_{0}$) as the DM candidate with its mass lying in the intermediate mass range,i.e $M_{W}$ < $M_{DM}$ $\leq $550 GeV to show relic abundance and the lightest of $N_{k}$...
The next-generation neutrino experiment, DUNE, will utilize a high-intensity neutrino beam produced to measure electron-neutrino appearance and muon-neutrino disappearance with its 40 kilotons (fiducial mass) liquid argon far detector. Liquid argon purity is crucial to use liquid argon time projection chambers (LArTPC) in DUNE's large detectors. A purity monitor is a miniature TPC that...
The movable temperature profiler is a 7m vertical array of 22 sensors which measure cryogenic temperatures with a precision of a few mK. This precision is necessary to monitor the efficiency of recirculation and purification of liquid argon inside large liquid argon based neutrino detectors. Liquid argon temperature impacts electron (signal) drift velocity, liquid argon flow, purity...
The Daya Bay, MINOS and MINOS+ experiments have searched for sterile neutrino mixing using electron antineutrino and muon (anti)neutrino disappearance, respectively, within a minimally extended four-neutrino scenario. They have recently combined their results, together with those from the Bugey-3 reactor neutrino experiment, to set the most stringent limits to date on the $\theta_{\mu e}$...
The Daya Bay reactor neutrino experiment is the first experiment that measured a nonzero value for the $\theta_{13}$ neutrino mixing angle in 2012. Antineutrinos from six 2.9 $\text{GW}_{\text{th}}$ reactors are detected in eight functionally identical antineutrino detectors deployed in two near (flux-weighted baseline 470 m and 576 m) and one far (1648 m) underground experimental halls. The...
The Daya Bay Reactor Neutrino Experiment is designed to measure the smallest neutrino mixing angle theta13 and it has 8 functionally identical antineutrino detectors (AD), 4 located at two near sites and 4 in the far hall. Due to the high power of the Daya Bay reactors and over 100-t target mass, Daya Bay has collected unprecedented amount of statistics of reactor antineutrino events at...
The Daya Bay reactor neutrino experiment uses eight antineutrino detectors deployed in two near and one far underground experimental halls to detect electron antineutrinos produced by six nuclear reactors each with 2.9 GW$_{th}$. In this poster, we will present an improved reactor antineutrino flux measurement with reduced dominant uncertainties and the first measurement of the individual...
JUNO is a next generation multi-purpose neutrino oscillation experiment. Its main physics goal is to determine the neutrino mass ordering by studying the energy spectrum of medium-baseline reactor neutrinos. The energy resolution of JUNO needs to achieve 3%/sqrt(E), which is challenging for the energy and vertex reconstruction. This poster will introduce the maximum likelihood estimation...
The JUNO experiment is under construction in China. Its main goal is to determine the neutrino mass ordering via the precise measurement of the energy spectrum of anti-neutrinos from nuclear reactors 53 km away.
For JUNO's measurements, it is essential to suppress and control the background rate that mimic the signal from anti-neutrinos in the Central Detector (CD). The backgrounds that are...
JUNO is a multipurpose experiment under construction in China. In addition to 18,000 20-inch large photomultipliers (LPMTs) serving as the primary light-detection device, the JUNO central detector will be instrumented with 25,600 custom-made 3-inch small photomultipliers (SPMTs) to boost the physics potential of the experiment. The SPMTs will mostly operate in the photon-counting and will help...
The LEGEND (Large Enriched Germanium Experiment for Neutrinoless ββ Decay) Collaboration will begin the construction of its initial phase, LEGEND-200, using the recently-decommissioned GERDA infrastructure, with a final 1000-kg installation (LEGEND-1000) planned. A simulation study of the neutron background is underway, using a custom simulation module based on Geant4. So far, the primary...
The observation of neutrino oscillations by the atmospheric, solar, accelerator, and reactor neutrino experiments substantiate that neutrinos are not massless particles. In 1978, L. Wolfenstein predicted that even massless neutrinos can change their flavor through flavor- changing neutral current (NC) interactions, also called non-standard interactions (NSI). The Standard Model of particle...
SoLid is a short baseline anti-neutrino experiment that is positioned at the BR2 Nuclear Reactor in Mol, Belgium. The aim of the experiment is to search for short baseline neutrino oscillations and spectral anomalies by detecting electron anti-neutrinos, which are produced in the reactor core, through inverse beta decay (IBD).
One of the most important background signals in the IBD selection...
NOvA is a two detector long-baseline neutrino oscillation experiment using Fermilab’s 700 kW NuMI muon neutrino beam. It studies the disappearance of muon (anti)neutrinos and the appearance of electron (anti)neutrinos in the beam over a distance of 810 km between the detectors. The observations can be used to constrain neutrino oscillation parameters: $\theta_{23}$, $\Delta m_{32}^2$ and...
Charge-Parity-Time (CPT) symmetry governs that the oscillation parameters for neutrinos and anti-neutrinos are to be identical. Different mass and mixing parameters for these particles may give us a possible hint for CPT violation in the neutrino sector. Using this approach, we discuss the ability of long-baseline and atmospheric neutrino experiments to determine the difference between mass...
Leptonic CP violation phase $\delta_{CP}$ is one of the current unknowns in neutrino oscillation physics. Not knowing the hierarchy of neutrino masses can bring an ambiguity in the measurement of $\delta_{CP}$. While accelerator based long baseline experiments like the proposed DUNE experiment can determine $\delta_{CP}$ without hierarchy ambiguity, it is interesting to study low energy...
Short-lived isomer 83mKr with its discrete electron spectrum has ideal properties to be used in the crucial role of calibration source in low energy experiments like KATRIN or XENON. To ensure smooth long-term operation of these experiments, reliable routines for production of 83Rb, which decays to 83mKr, have to be developed. We describe the methods developed at the Nuclear Physics Institute...
The large value of the last mixing angle of the PMNS mixing matrix measured by reactor experiments enable the search for CP violation in leptonic sector with a new generation of neutrino super beams. The ESSnuSB project proposes to use the European Spallation Source (ESS) based at Lund in Sweden to elaborate a high intensity neutrino super beam. The LINAC of this facility, under construction,...
Searches for solar antineutrinos from $\nu\to\overline{\nu}$ conversions of $B^8$ neutrinos are highly
sensitive to any source of MeV antineutrinos from the Sun. In this work we adapt these searches to non-minimal
neutrino decay models recently discussed in the context of the LSND, MiniBooNE, and reactor anomalies. The
production of such sterile neutrinos in the Sun, followed their...
The particle physics community is studying and developing new technologies to measure processes never detected before. Among these, strong efforts are put into studying innovative He detectors based on the quantum evaporation phenomenon. The main outcome of such detectors is the possibility to detect light dark matter particles. However, they also might have a great potential for exploring...
The rate of neutrino oscillations is typically dictated by the vacuum oscillation frequency, $\omega$, and the matter potential, $\lambda$. Until the early 2000s, it was believed that this paradigm was sufficient to describe neutrino oscillations inside supernovae, as well. At that time, the outstanding problem of the field appeared to be an understanding of the effect of large and rapid...
PROSPECT is a reactor antineutrino experiment consisting of a segmented liquid scintillator antineutrino detector designed to probe short-baseline neutrino oscillations and precisely measure the antineutrino spectrum of the primary fission isotope U-235. PROSPECT’s neutrino oscillation analysis utilizes target segmentation to look for differences in measured inverse beta decay (IBD) positron...
The long-baseline neutrino oscillation experiments rely on detailed models of neutrino interactions on nuclei to relate observations made at near detector locations to far detector locations in order to extract precision measurements on the oscillation parameters. These models constitute an important source of systematic uncertainty, driven in part because detectors to date have been blind to...
The SuperNEMO experiment aims at testing the Majorana nature of neutrinos, looking for the neutrinoless double beta decay. The final detector goal is to reach a sensitivity of $10^{26}$ years on the $0\nu\beta\beta$ decay half-life, i.e a Majorana neutrino mass of $50$-$100$ meV. The first module of the SuperNEMO experiment is under construction at Laboratoire Souterrain de Modane (LSM), with...
