Conveners
Neutrino Physics: Exotics (NSI and BSM)
- Zahra Tabrizi (Northwestern University)
Neutrino Physics: Neutrino telescopes and high energy neutrinos
- Pablo Franรงois Felix Kunze (GSSI)
Neutrino Physics: Accelerator neutrinos flux and cross sections
- London Cooper-Troendle
Neutrino Physics: Low Energy Neutrinos
- Kaladi Babu
- Ks Babu (Oklahoma State University)
Neutrino Physics: Accelerator neutrinos flux and cross sections
- Anil Thapa (University of Virginia)
Neutrino Physics: Neutrino Mass Models
- Saarik Kalia (University of Minnesota)
Neutrino Physics: Neutrino Mixing and Decay
- Vedran Brdar (MPIK Heidelberg)
- Vedran Brdar (Oklahoma State University (US))
Neutrino Physics: Exotics (HNL, Tridents)
- Supriya Senapati (University of Massachusetts Amherst)
Neutrino Physics: Detectors
- Seodong Shin (Jeonbuk National University)
Like the weak interaction itself, the Higgs coupling to the left chiral components of the Dirac bispinors for quarks "knows" which up goes with which down in the universal coupling. However, the simple conjecture that the right chiral components of each are not so distinguished provides for a consistent determination of the quark mass spectra and of
the CKM matrix relating their mass...
Upcoming cosmological surveys will probe the impact of a non-zero sum of neutrino masses on the growth of structures. These measurements are sensitive to the behavior of neutrinos at cosmic distances, making them a perfect testbed for neutrino physics beyond the standard model at long ranges. In this talk, I will introduce a novel signal from long-range self-interactions between neutrinos. In...
The talk will still be about the same generalization of QM but more focused on the difference in the interference pattern of two paths in canonical QM vs. this generalization of QM. The reason for this change is that I have made much more progress in this aspect than the topic of my current abstract. As such, I believe it would be more fruitful to talk about this work as opposed to...
In this talk, we discuss the cosmological effects of a tower of neutrino states (equivalently a tower of warm dark matter ) on cosmic microwave background (CMB) and large-scale structure. For concreteness, we considered the $N$-Naturalness model which is a proposed mechanism to solve the electroweak Hierarchy problem. The model predicts a tower of neutrino states, which act as warm dark...
Identification of high-energy neutrino point sources by IceCube is exciting for particle phenomenology, as propagation of neutrinos over large distances allows us to test properties that are hard to access. However, beyond-Standard Model effects would often show up as distortions of the energy spectrum, which makes it difficult to distinguish new physics from uncertainties in the source...
ProtoDUNE-SP was a large-scale prototype of the single phase DUNE far detector which took test beam data in Fall 2018. The beam consisted of positive pions, kaons, muons, and protons, and this data is being used to measure the various hadron-Ar interaction cross sections. These measurements will provide important constraints for the nuclear ground state, final state interaction, and secondary...
Charged leptons produced by high-energy and ultrahigh-energy neutrinos have a substantial probability of emitting prompt internal bremsstrahlung $\nu_\ell + N \rightarrow \ell + X + \gamma$. This can have important consequences for neutrino detection. We discuss observable consequences at high- and ultrahigh-energy neutrino telescopes and LHC's Forward Physics Facility. Logarithmic...
The SPS Heavy Ion and Neutrino Experiment (NA61/SHINE) is a fixed-target hadron spectrometer at CERNโs Super Proton Synchrotron. It has a dedicated program to measure hadron-nucleus interactions with the goal of constraining the accelerator-based neutrino flux, which mainly originates from the not precisely known primary and secondary hadron production. NA61/SHINEโs previous measurements of...
The Deep Underground Neutrino Experiment (DUNE) is a long baseline oscillation experiment that, among its many physics goals, seeks to measure the charge-parity (CP) violating phase, $\delta_{\mathrm{CP}}$. To do so requires precise knowledge of both the neutrino and antineutrino fluxes. DUNE will achieve this via the use of both a near and far detection system. The leading source of...
We use publicly available data to perform a search for correlations of high-energy neutrino candidate events detected by IceCube and high-energy photons seen by the HAWC collaboration. Our search is focused on unveiling such correlations outside of the Galactic plane. This search is sensitive to correlations in the neutrino candidate and photon skymaps which would arise from a population of...
The scenario of neutrino self-interactions is an interesting beyond-Standard Model possibility that is difficult to test. High energy neutrinos measured by the IceCube neutrino detector having traveled long distances present an opportunity to attempt to constrain the parameters governing neutrino self-interaction: the mediator mass and coupling constant. We have modeled neutrino production,...
The ForwArd Search ExpeRiment (FASER) has been successfully acquiring data at the Large Hadron Collider (LHC) since the inception of Run 3 in 2022. FASER opened the window on the new subfield of collider neutrino physics by conducting the first direct detection of muon and electron neutrinos at the LHC. In this talk, we discuss the latest neutrino physics results from FASER. A review of the...
Proton-proton collisions at the LHC generate a high-intensity collimated beam of neutrinos in the forward direction, characterized by energies of up to several TeV. The recent observation of LHC neutrinos by FASERฮฝ and SND@LHC signals that this hitherto ignored particle beam is now available for scientific inquiry. Here we quantify the impact that neutrino deep-inelastic scattering (DIS)...
Project 8 is an experiment that seeks to determine the electron-weighted neutrino mass via the precise measurement of the electron energy in beta decays, with a sensitivity goal of $40\,\mathrm{meV/c}^2$. We have developed a technique called Cyclotron Radiation Emission Spectroscopy (CRES), which allows single electron detection and characterization through the measurement of cyclotron...
Neutrino physics is advancing into a precision era with the construction of new experiments, particularly in the few GeV energy range. Within this energy range, neutrinos exhibit diverse interactions with nucleons and nuclei. In this talk I will delve in particular into neutrinoโnucleus quasi-elastic cross sections, taking into account both standard and, for the first time, non-standard...
We focus on the potential of neutrino - 13C neutral current interactions in clarifying the reactor antineutrino flux around the 6 MeV region. The interactions produce 3.685 MeV photon line via the process of de-excitation of 13C in organic liquid scintillators, which can be observed in reactor neutrino experiments. We expect the future measurements of neutrino - 13C cross section in JUNO and...
MicroBooNE is Liquid Argon Time Projection Chamber (LArTPC), able to image neutrino interactions with excellent spatial resolution, enabling the identification of complex final states resulting from neutrino-nucleus interactions. MicroBooNE currently possesses the world's largest neutrino-argon scattering data set, with a number of published cross section measurements and more than thirty...
The study of neutrino-nucleus scattering processes is important for the success of a new generation of neutrino experiments such as DUNE and T2K. Quasielastic neutrino-nucleus scattering, which yields a final state consisting of a nucleon and charged lepton, makes up a large part of the total neutrino cross-section in neutrino experiments. A significant source of uncertainty in the...
The COHERENT collaboration made the first measurement of coherent elastic neutrino-nucleus scattering (CEvNS) and did so by employing neutrinos produced by the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory (ORNL). The uncertainty of the neutrino flux generated from the SNS is on the order of 10% making it one of COHERENT's most dominant systematic uncertainties. To address...
NOvA, a long-baseline neutrino oscillation experiment, is primarily designed to measure the muon (anti)neutrino disappearance and electron (anti)neutrino appearance. It achieves this by utilizing two functionally identical liquid scintillator detectors separated by 810 km, positioned in the off-axis Fermilab NuMI beam, with a narrow band beam centered around 2 GeV. Energetic neutral pions,...
The Karlsruhe Tritium Neutrino (KATRIN) Experiment directly measures the neutrino mass-scale with a target sensitivity of 0.3 eV/c2 by determining the shape change in the molecular tritium beta spectrum near the endpoint. KATRIN makes this measurement by employing its Magnetic Adiabatic Collimation with Electrostatic (MAC-E) Filter process to measure the integrated energy spectrum of the betas...
Neutrino-nucleus scatterings in the detector could induce electron ionization signatures due to the Migdal effect. We derive prospects for a future detection of the Migdal effect via coherent elastic solar neutrino-nucleus scatterings in liquid xenon detectors, and discuss the irreducible background that it constitutes for the Migdal effect caused by light dark matter-nucleus scatterings....
Neutrino-nucleus cross section measurements are needed to improve interaction modeling to enable upcoming precision oscillation measurements and searches for physics beyond the standard model. There are two methods for extracting cross sections, which rely on using either the real or nominal flux prediction for the measurement. We examine the different challenges faced by these methods, and...
The Coherent CAPTAIN-Mills (CCM) experiment is a 10 ton liquid argon scintillation detector located at Los Alamos National Lab studying neutrino and beyond Standard Model physics. The detector is located 23m downstream from the Lujan Facility's stopped pion source which will receive 2.25 x 10^22 POT in the ongoing 3 year run cycle. CCM is instrumented with 200 8-inch PMTs, 80% of which are...
We report on a global extraction of the 12C Longitudinal (RL) and Transverse (RT ) nuclear electromagnetic response functions from an analysis of all available electron scattering dats on carbon. The response functions are extracted for a large range of energy transfer ฮฝ, spanning the nuclear excitation, quasielastic, and โ(1232 MeV) region, over a large range of the square of the...
Unravelling the mystery of neutrino masses is one of the top priorities in particle physics and tremendous model building efforts have been devoted to exploring new physics beyond the Standard Model (BSM) in order to state the puzzle succinctly. In this work, we consider a simple extension of the standard model of particle physics (SM) โ a class of models called Two-Higgs Doublet Model with...
We investigate the possibility of neutrinoless double beta decay $( 0 \nu \beta\beta)$ and leptogenesis within a low-scale seesaw mechanism with additional sterile neutrinos. The general effective field theory (EFT) considerations suggest that if there are experimentally observable signatures in $0 \nu \beta \beta$ decay and the lepton asymmetry generated by the right-handed neutrinos, the...
We constrain limits on the decay and annihilation of very heavy dark matter (VHDM) particles in the mass range of $10^{9}-10^{16}$ GeV with the aid of projected neutrino flux sensitivity of future generations of neutrino telescopes, such as GRAND and IceCube-Gen2 radio upgrade. Particularly interesting constraints are obtained from the future lunar ultralong wavelength (ULW) radio telescope,...
Using the s-wave unitarity constraint on a general Type-1 Seesaw Model, we investigate the effects that unitarity bounds place on a general massive neutrino mixing angle, compare these new constraints against the typical analytical Type-1 mixing, and comment on how these constraints affect the available phase space for massive neutrino searches.
In the present work, I will discuss the so-called non-unitary effects in the neutrino mixing matrix that appear when we add more massive neutrino states. In the context of the first detection of FASER$\nu$, I studied the sensitivity to non-unitary parameters in FASER$\nu$ and FASER$\nu$2. Other phenomenology related to non-unitarity will also be discussed. This work is based on: 2309.00116
The IceCube DeepCore detector at the South Pole has been collecting GeV-scale atmospheric neutrino data for the past decade. DeepCore measures atmospheric neutrino oscillations with precision comparable to accelerator-based experiments, while also complementing accelerator measurements by probing longer distance scales and higher energies, peaking above the tau lepton production threshold. In...
T2K (Tokai to Kamioka) is a Japan-based long-baseline neutrino oscillation experiment designed to measure (anti)neutrino flavor oscillations. A neutrino beam peaked around 0.6 GeV is produced in Tokai and directed toward the water Cherenkov detector Super-Kamiokande, which is located 295 km away. A complex of near detectors is located at 280 m and is used to constrain the flux and...
Decaying sterile neutrino can mimic $\nu_\mu \to \nu_e$ oscillation signals at neutrino experiments. We revisit this possibility as a solution to the MiniBooNE and LSND puzzles in view of new data from MicroBooNE. Using MicroBooNE's search for an excess of $\nu_e$ in the Booster beam, we derive new limits in the parameter space of models where the sterile neutrino decays via mixing or...
The existence of sterile neutrinos can lead to a matter-enhanced resonance that results in a unique disappearance signature for Earth-crossing neutrinos, providing an alternative method for probing the short baseline anomalies. In order to reconcile the tension between appearance and disappearance experiments, decay mechanisms for the heavy sterile mass state have been proposed. In this talk,...
The Earth acts as a matter potential for relic neutrinos which modifies their index of refraction from vacuum by $\delta\sim10^{-8}$. It has been argued that the refractive effects from this potential should lead to a large $\mathcal O(\sqrt\delta)$ neutrino-antineutrino asymmetry at the surface of the Earth. This result was computed by treating the Earth as flat. In this talk, I revisit...
The existence of relic neutrino background is a strong prediction of big bang cosmology. But because of their extremely small kinetic energy today, the direct detection of relic neutrinos remains elusive. On the other hand, we know very little about the nature of dark matter. In this work, we show that heavy dark matter (with mass in the range of $10^9$ to $10^{15}$ GeV) decaying into...
The proposed Muon Collider Facility, when finalized, is going to offer great opportunities for discovering new physics. At high energies, muons can produce heavy neutral lepton (HNL), well-motivated beyond the Standard Model (SM) particles, which can potentially explain neutrino mass via seesaw mechanism. HNL can interact with the SM sector via transition magnetic moment, and in this talk, I...
The initiation of a novel neutrino physics program at the Large Hadron Collider (LHC) motivates studying the discovery potential of existing and proposed forward neutrino experiments. This requires resolving degeneracies between new predictions and uncertainties in modeling neutrino production in the forward kinematic region. Based on a broad selection of predictions for the parent hadron...
The neutrino trident process is where a neutrino scatters off nuclei and produces a lepton pair. Most trident studies have focused on electron and muon production as they represent the most likely source of trident events in the Standard Model (SM). We analyze the possibility of detecting tau leptons from SM trident processes at the DUNE near detector. The detection of tau leptons at the DUNE...
In this talk, I would like to investigate the excellent potential of future tau neutrino experiments in probing non-standard interactions and secret interactions of neutrinos. Due to its ability identifying tau lepton, DUNE far detector could have superior sensitivity in probing the secret neutrino interactions by observing downward-going atmospheric neutrinos, compared to the short-baseline...
The newly Upgraded Near Detector of the T2K experiment includes a novel 3D-projection tracker called Super Fine-Grained Detector (SFGD) sandwiched between two Time Projection Chambers equipped with resistive MicroMegas. The primary goal of the upgraded near detector is to reduce systematic uncertainties associated with neutrino flux and cross-section models for future studies of neutrino...
The Deep Underground Neutrino Experiment (DUNE), hosted by the U.S. Department of Energyโs Fermilab, is expected to begin operations in the late 2020s. The primary physics goals of the experiment include studying neutrino oscillations, detecting and measuring the ฮฝe flux from supernova bursts, and searching for physics beyond the Standard Model. In preparation of DUNE, we are building...
The Accelerator Neutrino Neutron Interaction Experiment (ANNIE) is a 26-ton water Cherenkov experiment with the Large Area Picosecond Photodetector (LAPPD), operating on the Booster Neutrino Beamline at Fermilab. ANNIE aims to measure the neutron yield from neutrino-nucleus interactions as a function of lepton kinematics to reduce systematic uncertainties in future long baseline neutrino...
The T2K collaboration is currently upgrading the near detector for the experiment. The upgraded near detector include the Super Fine Grained Detector (SuperFGD) which is a 3D scintillator tracker and serves as the primary target for neutrino interactions. The SuperFGD is sandwiched by two time-projection chambers (HA-TPC) and the three detectors are then enclosed by time-of-flight detectors...
The Deep Underground Neutrino Experiment (DUNE) is a next-generation long-baseline neutrino experiment currently under construction in the US. The experiment consists of a broadband neutrino beam from Fermilab to the Sanford Underground Research Facility (SURF) in Lead, South Dakota, a high-precision near detector, and a large liquid argon time-projection chamber (LArTPC) far detector. The...
Long-baseline neutrino oscillation experiments rely on detailed models of neutrino interactions on nuclei. These models constitute an important source of systematic uncertainty, partially because detectors to date have been blind to final state neutrons. Three-dimensional projection scintillator trackers comprise components of the near detector of the next generation long-baseline neutrino...
We study the link between low-scale CP-violating Dirac phase $(\delta)$ and high-scale leptogenesis in a Left-Right Symmetric Model (LRSM) with scalar bidoublet and doublets. The model's fermion sector includes one sterile neutrino $(S_L)$ย for each generation, resulting in a double seesaw mechanismย in the neutral fermion mass matrix. The double seesaw is achieved by implementing the type-I...
