Conveners
Neutrino Physics
- Kendall Mahn (MSU)
- Roxanne Guenette (Harvard University)
- Peter Denton (Brookhaven National Laboratory)
- Michelle Dolinski (Drexel University)
Neutrino Physics
- Kendall Mahn (MSU)
- Michelle Dolinski (Drexel University)
- Peter Denton (Brookhaven National Laboratory)
- Roxanne Guenette (Harvard University)
Neutrino Physics
- Roxanne Guenette (Harvard University)
- Michelle Dolinski (Drexel University)
- Kendall Mahn (MSU)
- Peter Denton (Brookhaven National Laboratory)
Neutrino Physics
- Michelle Dolinski (Drexel University)
- Peter Denton (Brookhaven National Laboratory)
- Roxanne Guenette (Harvard University)
- Kendall Mahn (MSU)
Neutrino Physics
- Kendall Mahn (MSU)
- Roxanne Guenette (Harvard University)
- Michelle Dolinski (Drexel University)
- Peter Denton (Brookhaven National Laboratory)
Neutrino Physics
- Peter Denton (Brookhaven National Laboratory)
- Kendall Mahn (MSU)
- Roxanne Guenette (Harvard University)
- Michelle Dolinski (Drexel University)
Neutrino Physics
- Roxanne Guenette (Harvard University)
- Kendall Mahn (MSU)
- Peter Denton (Brookhaven National Laboratory)
- Michelle Dolinski (Drexel University)
Neutrino Physics
- Kendall Mahn (MSU)
- Michelle Dolinski (Drexel University)
- Roxanne Guenette (Harvard University)
- Peter Denton (Brookhaven National Laboratory)
Description
parallel sessions
As long-baseline efforts are ramped up over coming years, it is important understand how the presence of matter affects neutrino oscillations. In this talk I will discuss precision oscillation probability formulas with matter effects. We have developed expressions that are simple, precise, and an actual expansion in the small parameters: $\sin^2\theta_{13}$ and $\Delta m^2_{21}/\Delta...
NOvA is a long-baseline neutrino experiment that uses an upgraded NuMI neutrino source at Fermilab and a 14 kiloton detector at Ash River, Minnesota. The detector has a highly active, finely segmented design that offers superb event identification capability. This talk will report the latest results on muon (anti-)neutrino disappearance and electron (anti-)neutrino appearance from NOvA. The...
The single phase ProtoDUNE detector is a prototype detector for the Deep Underground Neutrino Experiment. It was built at CERN and has accumulated millions of test beam particles with momenta between 0.3 GeV/c to 7 GeV/c during the beam runs in the H4 VLE dedicated charged particles beamline at the CERN Neutrino Platform in late 2018. In this talk, I will present the preliminary detector...
Next generation neutrino oscillation experiments enter a new era of precision measurements employed in the search for CP violation and mass hierarchy. Charged-current (CC) interactions are the primary detection channels for neutrino oscillation experiments. Protons are one of the final state particles in neutrino CC interactions such as CC quasi-elastic (CCQE) and CC resonance (CCRES)...
The Accelerator Neutrino Neutron Interaction Experiment (ANNIE) at Fermilab uses 30 tons of gadolinium-enhanced water to capture and detect the otherwise invisible neutrons produced in complex neutrino-nucleus interactions in addition to traditional water-Cherenkov charged particle detection. The number of these final-state neutrons help constrain the interaction type and the kinematics of the...
The CAPTAIN (Cryogenic Apparatus for Precision tests of Argon Interactions with Neutrinos) experiment’s goal is to measure the neutron cross section and define the neutron signature in liquid argon in the 50 MeV to 800 MeV energy range. This measurement is of great interest for neutrino physics since neutrons introduce a considerable uncertainty in neutrino energy reconstruction. They take...
Elastic neutrino-electron scattering provides an important tool for normalizing neutrino flux in modern experiments. This process is subject to large radiative corrections. We determine the Fermi effective theory performing the one-loop matching to the Standard model at the electroweak scale with subsequent running down to GeV scale. Based on this theory, we analytically evaluate virtual...
We investigate the binding energy parameters that should be used in modeling electron and neutrino scattering from nucleons bound in a nucleus within the framework of the impulse approximation. We discuss the relation between binding energy, missing energy, removal energy ($\epsilon$), spectral functions and shell model energy levels and extract updated removal energy parameters from ...
The binding energy of nucleons from nuclei in neutrino-nucleus interactions is constrained by analyses of $(e,e^\prime p)$ reactions in electron scattering experiments and theoretical corrections for differences between electron and neutrino induced reactions. Different neutrino interaction generators implement these constraints in distinct ways, and the resulting differences in predictions...
The MicroBooNE experiment studies neutrino interactions with a Liquid Argon Time Projection Chamber (LArTPC) as part of the Short Baseline Neutrino program at Fermilab. The MicroBooNE detector, located on-axis in the Booster Neutrino Beam, has an active volume of 85 tonnes of Liquid Argon and a single 2.5 m wide drift. This talk will present the differential cross-section measurement for...
We present the MINERvA experiment’s new double-differential scattering cross sections for neutrinos on scintillator from our recently completed data taking run with a medium energy tune relevant to the NOvA and DUNE oscillation experiments. These results have 10 times the statistics of our previously reported results. As well as being useful to help reduce oscillation experiments'...
This talk presents results of fits of sterile neutrino models to short baseline oscillation data. This is motivated by a number of experiments that have observed anomalies. We report the latest 3+1 fit result, which is the model traditionally used for comparison. This model has a well-known “tension” between appearance and disappearance that we will discuss. We will then explore...
Although MiniBooNE and LSND experiments have shown compelling evidence for sterile neutrinos in short baseline neutrino oscillation experiments, long baseline neutrino experiments and IceCube set strong constraints on muon neutrinos oscillating at the $\sim1\,\text{eV}^{2}$ mass scale. These muon neutrino experiments are at much higher energies compared to LSND and MiniBooNE. Coherent...
Observations of neutrino oscillations from the majority of neutrino
oscillation experiments are consistent with a three-flavor framework.
However, the excess of events seen by LSND and MiniBooNE may be
incompatible with this model and, to explain these data using neutrino
mixing, require an additional, sterile, neutrino. These intriguing results
are not conclusive and are in tension with...
ICARUS is one of three liquid argon time projection chambers (LArTPCs) of the Short-Baseline Neutrino (SBN) Program at FNAL. SBN’s purpose is to address the observed neutrino measurement anomalies seen by experiments such as LSND and MiniBooNE, and the potential existence of sterile neutrinos. ICARUS underwent an overhaul at CERN and has now been transferred to FNAL where ICARUS will serve as...
MicroBooNE is a 85-ton active volume Liquid Argon Time Projection
Chamber (LArTPC) which has been collecting data from the Booster
Neutrino Beam at Fermilab since 2015. LArTPCs are imaging detectors that
present neutrino interactions with excellent spatial resolution and
are a leading technology for the next generation of neutrino
experiments. The main goal of MicroBooNE is to investigate the...
MicroBooNE utilizes a liquid argon time projection chamber (LArTPC) located on-axis in the Fermilab Booster Neutrino Beam (BNB) to search for the excess of low energy electromagnetic-like events (eLEE) seen by the MiniBooNE experiment. This talk will present MicroBooNE’s progress in the low-energy excess search, including the status of our deep-learning-based approach for identifying...
MicroBooNE is a Liquid Argon Time Projection Chamber which has been taking neutrino data at Fermilab's Booster Neutrino Beamline since October 2015. One of its primary goals is to investigate the “Low Energy Excess” of neutrino events observed by the MiniBooNE experiment, for which candidate interpretations include neutrino neutral current (NC) resonant Delta production
with subsequent...
Liquid Argon Time Projection Chambers (LArTPCs) are an important technology in the field of experimental neutrino physics due to their exceptional calorimetric and position resolution capabilities. In particular, their ability to distinguish electrons from photons is crucial for current and future neutrino oscillation experiments. The MicroBooNE experiment is utilizing LArTPC technology to...
We extend a simple and compact method for calculating the three flavor neutrino oscillation probabilities in uniform matter density to schemes with sterile neutrinos, with favorable features inherited. The only constraint of the extended method is that the scale of the matter potential is not significantly larger than the atmospheric ∆m^2, which is satisfied by all the running and proposed...
The HUNTER experiment (Heavy Unseen Neutrinos from Total Energy-momentum Reconstruction) is a search for sterile neutrinos with masses in the 10-300 keV range. The neutrino missing mass will be reconstructed from 131-Cs electron capture decays occurring in a magneto-optically trapped, laser-cooled sample. Reaction-microscope spectrometers will be used to measure the vector momenta of all...
The Precision Reactor Oscillation and Spectrum Experiment (PROSPECT) performs a precision measurement of reactor antineutrinos through inverse beta decay at a baseline range of 7-9 m from the core of the High Flux Isotope Reactor (HFIR). The single, movable detector has a segmented design of 154 optically separated individual segments that serves multiple purposes. Segments, filled...
PROSPECT is a short-baseline reactor antineutrino experiment designed to search for short-baseline sterile neutrino oscillations and perform a precise measurement of 235U reactor antineutrino spectrum from the High Flux Isotope Reactor (HFIR) at Oak Ridge National Laboratory (ORNL). This measurement probes our understanding of recent anomalous results observed in reactor antineutrinos....
In this talk, I will present the latest results of the reactor antineutrino flux and spectrum measurements performed by the Daya Bay Reactor Neutrino Experiment. Utilizing six powerful nuclear reactors as antineutrino sources, and eight identically designed detectors deployed in two near and one far underground experimental halls, the Daya Bay experiment has collected the largest reactor...
After measuring in 2012 a relatively large value of the neutrino mixing angle θ13, the door is now open to observe for the first time a possible CP violation in the leptonic sector. The measured value of θ13 also privileges the 2nd oscillation maximum for the discovery of CP violation instead of the usually used 1st oscillation maximum. The sensitivity at this 2nd oscillation maximum is about...
The Isotope Decay-At-Rest (IsoDAR) experiment is a compact accelerator-based source for anti-electron neutrinos produced through Lithium-8 decay. Paired with a kiloton scale detector, IsoDAR will be able to precisely measure neutrino oscillations over an L/E of approximately 0.6-7.0 m/MeV. IsoDAr will be able to decisively test the current global allowed region for the sterile neutrino...
The next phase of observation with the Super-K detector will add gadolinium sulfate to the water in order to enhance neutron capture. We will present details on the detector modifications, started in mid-2018 and completed in 2019. The first tests with gadolinium are expected in early 2020. We will review the topics with enabled sensitivity from this upgrade, namely, supernova neutrinos,...
The Deep Underground Neutrino Experiment (DUNE) is an international project for neutrino physics and proton-decay searches, currently in the design and planning stages. Once built, DUNE will consist of near and far detector sites exposed to the world’s most intense neutrino beam. The near detector will record neutrino interactions at Fermilab, near the beginning of the beamline. The other,...
we revisit the dimension-7 neutrino mass generation mechanism based on the addition of an isospin 3/2 scalar quadruplet and two vectorlike isotriplet leptons to the standard model. We discuss the LHC phenomenology of the charged scalars of this model, complemented by the electroweak precision and lepton flavor violation constraints. We pay particular attention to the triply charged and doubly...
After running the first apparatus from 2011 to 2015, KamLAND-Zen was able to set a world leading lower limit on half-life of 136Xe neutrinoless double beta decay to 1.07×10^26 years with 90% C.L. The second apparatus completed an upgrade to double the amount of 136Xe, and the data taking has begun recently. This operation is expected to continue for 5 years, looking for bigger and cleaner...
Liquid scintillator-based detectors are one of the leading detector technologies in the search for neutrinoless double beta decay.KamLAND-ZEN, one of the leading experiment in this region, is currently limited by naturally occurring and spallation induced backgrounds. In the future they will be limited by the neutrino-electron scattering of boron-8 solar neutrinos.With the advancements in...
EXO-200 is a neutrinoless double beta decay experiment using a low background time projection chamber filled with ~150 kg of liquid xenon enriched in $^{136}$Xe. The experiment, located at the Waste Isolation Pilot Plant near Carlsbad, New Mexico, recently completed data taking. After hardware upgrades, the last two years of data demonstrated improved energy resolution. Together with new...
Large ultra-low background liquid xenon (LXe) detectors have recently emerged as a promising technology that can push the neutrinoless double beta decay search to unprecedented sensitivity. An observation of this decay would demonstrate lepton number violation and the Majorana nature of the neutrino. nEXO is a proposed experiment to use a 5 tonne liquid xenon time projection chamber (TPC)...
The NEXT (Neutrino Experiment with a Xenon TPC) experiment will search for neutrinoless double beta (0νββ) decay from 136-Xe using a high pressure xenon gas time projection chamber. This detector technology has several key advantages, including excellent energy resolution and powerful background rejection based on event topology. The collaboration is currently operating a 5 kg demonstrator...
In the search for neutrinoless double beta decay, understanding and reducing backgrounds is crucial due to the extremely slow decay rate of the process. An advance that could drive backgrounds to negligible levels would be the ability to efficiently detect the barium daughter of 136-Xe to 136-Ba double beta decay, since no conventional radioactive process can produce barium ions or atoms in...
SNO+ is a multipurpose experiment with the primary goal to search for neutrinoless double-beta (0νββ) decay of Te-130 to probe the Majorana nature of neutrinos. Currently, the detector is filled with ultra pure water and is in the process of filling liquid scintillator, to which 1.3 tons of Te-130 is expected to be loaded later this year. I will discuss the current preparations for the Te...
COHERENT is a multi-detector experiment measuring the Coherent Elastic neutrino-Nucleus Scattering (CEvNS) cross section on several target nuclei using a stopped-pion neutrino flux generated at the Spallation Neutron Source (SNS) at Oak Ridge. Despite having a very large cross section, CEvNS had not been observed for four decades after the process was theoretically postulated due to the...
The Spallation Neutron Source (SNS) is a pulsed source of neutrons and, as a byproduct of this operation, an intense source of neutrinos via stopped-pion decay. The COHERENT collaboration uses this source to investigate coherent elastic neutrino-nucleus scattering (CEvNS) with a suite of detectors. To enable precise cross-section measurements, we plan to reduce an estimated 10% uncertainty...
The COHERENT collaboration is deploying a suite of low-energy detectors in a low-background corridor of the ORNL Spallation Neutron Source (SNS) to measure coherent elastic neutrino nucleus scattering (CEvNS) on an array of nuclear targets employing different technologies. A measurement of CEvNS on a range of nuclei will test the $N^2$-dependence of the CEvNS cross section and further the...
Coherent elastic neutrino-nucleus scattering (CEvNS) is a
neutral-current process in which a neutrino scatters off an entire
nucleus, depositing a tiny recoil energy. The process is important in
core-collapse supernovae and also presents an opportunity for
detection of a burst of core-collapse supernova neutrinos in
low-threshold detectors designed for dark matter detection. This...
The photon detection system (PDS) is a subsystem of the Deep Underground Neutrino Experiment (DUNE). It measures the scintillation light signal and allows determination of the time of occurrence of an event of interest with much higher precision than charge collected from ionization in the liquid argon time-projection chambers and provides a complementary measurement of the deposited energy. ...
NOvA is a long-baseline off-axis accelerator neutrino experiment. By measuring muon neutrino disappearance and electron neutrino appearance between the NOvA Near Detector and the 14 kiloton Far Detector, the experiment is addressing outstanding questions in neutrino physics, including the determination of the neutrino mass hierarchy and existence of leptonic CP violation. The NOvA Test Beam...
In view of the J-PARC program of upgrades of the beam power, the T2K collaboration is preparing upgrades of the neutrino beamline and near detector, ND280, towards an increase of the exposure aimed at establishing leptonic CP violation at 3 σ level for a significant fraction of the possible δCP values. To reach this goal, the upgrade of the ND280 has been aimed at reducing the overall...
The Deep Underground Neutrino Experiment (DUNE) aims to make precise
measurements of the neutrino oscillation parameters. In particular, the measurement of
CPV in neutrinos requires the systematic uncertainty be within few percent level. In
order to highly constrain the flux, cross section and detector systematics, DUNE near
detector is designed to be a robust system including various...
ArgonCube is an international collaboration for LArTPC Detector R&D, with a focus on the technical needs for the DUNE physics program. The ArgonCube R&D program is currently aimed on detector modularization, pixelated charge readout, and innovative light detection for large LArTPCs. Modularization addresses a number of technical issues for large LArTPCs, including drift field stability, stored...
The main purpose of the Deep Underground Neutrino Experiment (DUNE) is to observe the CP-violation in neutrinos, proton decay and supernova neutrinos with a liquid-argon far detector of unprecedented size.
In the near detector complex, a spectrometer system called 3DST-S centered by a 3D
projection scintillator tracker (3DST) is proposed and being studied. The 3DST-S system is located...
The DUNE Near Detector design consists of multiple components, each designed to produce complimentary constraints on the flux and neutrino interaction systematic uncertainties for the oscillation analysis. One of these subdetectors is a magnetized high-pressure gaseous-argon TPC (HPgTPC), which will provide fine-grained tracking in a low-density detector, using the same target nucleus as the...
Overcoming Neutrino Interaction Mis-modeling with DUNE-PRISM
Luke Pickering for the DUNE Collaboration
The expected precision of current long-baseline neutrino oscillation experiments (T2K, NO$\nu$A) will be limited by uncertainties in neutrino interaction models in addition to sample statistics. The interaction uncertainties will also play a significant role in next-generation...
We present a mathematical model for describing the dynamics of impurity distribution in liquid argon detectors. This model considers the full dynamic components with significant influence on the purity performance of a liquid argon detector, including sources, sinks, and transport of impurities within and between the gas and liquid phases of a liquid argon detector. This model was applied on a...
The MicroBooNE Experiment uses Liquid Argon Time Projection Chamber (LArTPC) detector chambers. This detector is located about 460 meters away from the Booster Neutrino Beam at Fermilab. One of the challenges of identifying neutrino events among the dataset is the high frequency of cosmic ray muons that leave long tracks slicing through our event displays. In order to maintain high purity and...
Neutrino oscillation is so far the only experimental observation beyond the standard model. Many experiments have been set-up to measure the parameters governing the oscillation probabilities. Feldman-Cousins method is a unified approach to create frequentist confidence intervals near physical limits or with low statistics. It is broadly used in neutrino oscillation parameter extraction....
Wide-band neutrino beams can be divided into different energy and flavor spectra from using precision timing of neutrino-interaction events relative to the primary proton beam. This ‘stroboscopic’ approach applies equally for near and far detectors in an oscillation experiment and is complimentary to the off-axis approach to select a limited energy and flavor spectra. Timing-based energy and...
We measure multiple proton emission in pionless, quasielastic like, charged current neutrino scattering in the MINERvA scintillator detector. The number of such observable events in MINERvA is predicted to be far greater than currently available samples. We measure the total number of such events, and study the distribution of laboratory frame angles between the multiple protons and the muon,...
In a recent article (arXiv:180306332) we noticed that the electron density in matter exhibit large spikes close to the atomic nuclei. We showed that these spikes in the electron densities, 3-4 orders of magnitude larger that those inside the Sun`s core, have no effect on the neutrino emission and absorption probabilities or on the neurinioless double beta decay probability. However, it was not...
The Deep Underground Neutrino Experiment (DUNE) is a long-baseline neutrino oscillation experiment using an accelerator neutrino beam produced at Fermilab. Additionally, the far detector, four liquid argon time projection chambers, each with 10 kt of fiducial mass, with an overburden of 4300 mwe, is sensitive to a rich range of astroparticle measurements. In this talk, we outline DUNE’s...
NOvA is a two-detector long-baseline neutrino oscillation experiment which aims to make a determination of the neutrino mass hierarchy, the octant of ${\theta}_{23}$, and measure possible CP violation. The NOvA Test Beam program consists of a scaled-down NOvA detector placed in a beamline capable of delivering 0.3 - 2.0 GeV/c protons, electrons, pions, and kaons. The beamline detectors provide...
The MicroBooNE experiment at Fermilab is a short baseline neutrino experiment. The experiment was created with the goal of examining the low-energy excess seen in MiniBooNE. The MicroBooNE detector is a LArTPC which relies on three wire readout planes to collect data. In order to examine the low energy excess, it is necessary to reject background with high efficiency while retaining high...
