A5040867045- Particle physics theoretical and experimental studies
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Astrophysics and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Atomic and Subatomic Physics Research
- Computational Physics and Python Applications
- Planetary Science and Exploration
- Quantum, superfluid, helium dynamics
- Radiation Therapy and Dosimetry
- Quantum Chromodynamics and Particle Interactions
- Nuclear Physics and Applications
- Muon and positron interactions and applications
- Radioactive Decay and Measurement Techniques
- Solar and Space Plasma Dynamics
- Gamma-ray bursts and supernovae
- Reservoir Engineering and Simulation Methods
- Superconducting Materials and Applications
- Advanced NMR Techniques and Applications
- Advanced Chemical Physics Studies
- Quantum Mechanics and Applications
- Particle Accelerators and Free-Electron Lasers
- Cold Atom Physics and Bose-Einstein Condensates
Institute for Research in Fundamental Sciences
2016-2025
New York University Abu Dhabi
2023
The Abdus Salam International Centre for Theoretical Physics (ICTP)
2005-2020
Institute for Cognitive Science Studies
2009
SLAC National Accelerator Laboratory
2002-2004
Scuola Internazionale Superiore di Studi Avanzati
2001-2004
Menlo School
2002-2004
Stanford University
2002-2003
Geneva College
2003
Stanford Synchrotron Radiation Lightsource
2002
Current neutrino experiments are measuring the mixing parameters with an unprecedented accuracy. The upcoming generation of will be sensitive to subdominant oscillation effects that can give information on yet-unknown parameters: Dirac CP-violating phase, mass ordering and octant $\theta_{23}$. Determining exact values is crucial test models flavor symmetries designed predict these parameters. In first part this review, we summarize current status parameter determination. We consider most...
Abstract High energy collisions at the High-Luminosity Large Hadron Collider (LHC) produce a large number of particles along beam collision axis, outside acceptance existing LHC experiments. The proposed Forward Physics Facility (FPF), to be located several hundred meters from ATLAS interaction point and shielded by concrete rock, will host suite experiments probe standard model (SM) processes search for physics beyond (BSM). In this report, we review status civil engineering plans explore...
The Forward Physics Facility (FPF) is a proposal to create cavern with the space and infrastructure support suite of far-forward experiments at Large Hadron Collider during High Luminosity era. Located along beam collision axis shielded from interaction point by least 100 m concrete rock, FPF will house that detect particles outside acceptance existing large LHC observe rare exotic processes in an extremely low-background environment. In this work, we summarize current status plans for FPF,...
Abstract Neutrinos are one of the most promising messengers for signals new physics Beyond Standard Model (BSM). On theoretical side, their elusive nature, combined with unknown mass mechanism, seems to indicate that neutrino sector is indeed opening a window physics. experimental several long-standing anomalies have been reported in past decades, providing strong motivation thoroughly test standard three-neutrino oscillation paradigm. In this Snowmass21 white paper, we explore potential...
The conclusions of the Physics Working Group international scoping study a future Neutrino Factory and super-beam facility (the ISS) are presented. ISS was carried by community between NuFact05, 7th International Workshop on Factories Superbeams, Laboratori Nazionali di Frascati, Rome, June 21-26, 2005) NuFact06 (Ivine, California, 24{30 August 2006). physics case for an extensive experimental programme to understand properties neutrino is presented role high-precision measurements...
A bstract In the presence of neutrino Non-Standard Interactions (NSI) with matter, derivation parameters from oscillation data must be reconsidered. particular, along standard solution to oscillation, another known as “LMA-Dark” is compatible global and requires both θ 12 > π/4 a certain flavor pattern NSI an effective coupling comparable G F . Contrary conventional expectations, there class models based on new U(1) X gauge symmetry boson mass few MeV 10 that can viably give rise such...
In 2006, a simple extension of the standard model was proposed in which neutrinos obtain radiative Majorana masses at one-loop level from their couplings with dark matter, hence term ``scotogenic,'' Greek ``scotos'' meaning darkness. Here an analogous mechanism for Dirac neutrino is discussed minimal model. different ranges parameter space, various candidates matter are possible. particular, lightest fermion appears loop diagram generating mass can be viable dark-matter candidate. Such...
Large neutrino event numbers in future experiments measuring coherent elastic nucleus scattering allow precision measurements of standard and new physics. We analyze the current prospective limits a light scalar particle coupling to neutrinos quarks, using COHERENT CONUS as examples. Both lepton number conserving violating interactions are considered. It is shown that (future) can probe for masses few MeV couplings down level $10^{-4}$ $(10^{-6})$. Scalars with around energy determine their...
It is well-known that in addition to the standard LMA solution solar anomaly, there another called LMA-Dark which requires Non-Standard Interactions (NSI) with effective couplings as large Fermi coupling. Although this satisfies all bounds from various neutrino oscillation observations and even provides a better fit low energy spectrum, it not popular mainly because no model compatible existing has been so far constructed give rise solution. We introduce foundation for such NSI strength...
We construct UV-complete models for nonstandard neutrino interactions mediated by a sub-GeV gauge boson ${Z}^{\ensuremath{'}}$ coupled to baryon number $B$ or $B\ensuremath{-}L$. A flavor-dependent coupling neutrinos is induced mixing $U(1{)}^{\ensuremath{'}}$-charged Dirac fermion with the active neutrinos, naturally suppressing flavor violation nonuniversality of charged leptons loop level. show that these can give rise large flavor-conserving as well flavor-violating neutral-current...
We explore the role of Majoron (J) emission in supernova cooling process, as a source upper bound on neutrino-Majoron coupling. show that strongest coupling to ${\ensuremath{\nu}}_{e}$ comes from ${\ensuremath{\nu}}_{e}{\ensuremath{\nu}}_{e}\ensuremath{\rightarrow}J$ process core supernova. also find bounds diagonal couplings ${\ensuremath{\nu}}_{\ensuremath{\mu}(\ensuremath{\tau})}{\ensuremath{\nu}}_{\ensuremath{\mu}(\ensuremath{\tau})}$ and off-diagonal...
We present a scenario in which remarkably simple relation linking dark matter properties and neutrino masses naturally emerges. This framework points towards low energy theory where the mass originates from existence of light scalar particle keV-MeV range. discuss different ways to constrain test this by means astrophysical cosmological observations as well laboratory experiments. Finally, we point out that one interesting aspect is implied range compatible with required for explanation...
Non-Standard neutral current Interactions (NSIs) of neutrinos with matter can alter the pattern neutrino oscillation due to coherent forward scattering on medium. This effect makes long-baseline experiments such as NO$\nu$A and DUNE a sensitive probe beyond standard model (BSM) physics. We construct light mediator models that give rise both lepton flavor conserving well Lepton Flavor Violating (LFV) NSI. outline present phenomenological viability these future prospects test them. predict...
Tau neutrinos are the least studied particle in Standard Model. This whitepaper discusses current and expected upcoming status of tau neutrino physics with attention to broad experimental theoretical landscape spanning long-baseline, beam-dump, collider, astrophysical experiments. was prepared as a part NuTau2021 Workshop.
The area of the unitarity triangle is a measure $\mathrm{CP}$ violation. We introduce leptonic triangles and study their properties. consider possibility reconstructing in future oscillation nonoscillation experiments. A set measurements suggested which will, principle, allow us to all sides triangle, consequently establish For different values $\mathrm{CP}$-violating phase ${\ensuremath{\delta}}_{D},$ required accuracy estimated. key elements method are determination $|{U}_{e3}|$ studying...
We present an economic model that establishes a link between neutrino masses and properties of the dark matter candidate. The particle content can be divided into two groups: light particles with lighter than electroweak scale heavy particles. particles, which also include candidate, are predicted to show up in low energy experiments such as ($K\ensuremath{\rightarrow}l+\mathrm{\text{missing energy}}$), making testable. sector at LHC may give rise...
The recently discovered 3.5 keV X-ray line from extragalactic sources may be evidence of dark matter scatterings or decays. We show that atoms can the source emission, through their hyperfine transitions, which would analog 21 cm radiation a sector. identify two families atom models match observations and are consistent with other constraints. In first, excited state is long-lived compared to age universe, mass relatively unconstrained; could strongly self-interacting in this case. second,...
Scalar (fermion) dark matter with mass in the MeV range coupled to ordinary neutrinos and another fermion (scalar) is motivated by scenarios that establish a link between radiatively generated neutrino masses relic density. With such coupling, cosmic supernova neutrinos, on their way us, could resonantly interact background particles, giving rise dip redshift-integrated spectra. Current future detectors, as Super-Kamiokande, LENA Hyper-Kamiokande, be able detect this distortion.
We construct a model based on new $U(1)_X$ gauge symmetry and discrete $Z_2$ under which the boson is odd. The contains complex scalars carry charge but are singlets of Standard Model. spontaneously broken maintained, making dark matter candidate. In minimal version there only one scalar field by extending number to two, will enjoy rich phenomenology comes in various phases. phase, CP broken. other an accidental appears makes stable therefore candidate along with vector boson. discuss...
Within the standard propagation scenario, flavor ratios of high-energy cosmic neutrinos at neutrino telescopes are expected to be around democratic benchmark resulting from hadronic sources, $\left( 1 : \right)_\oplus$. We show how coupling an ultralight dark matter complex scalar field would induce effective mass that could lead adiabatic propagation. This result in preservation detector production composition sources. effect detectors well outside range predicted by scenario averaged...
Non-Standard Interactions (NSI) of neutrinos with matter has received renewed interest in recent years. In particular, it been shown that NSI can reconcile the $3+1$ solution IceCube atmospheric data $E_\nu >500$ GeV, provided effective coupling is large, e.g. $\sim 6 G_F$. The main goal present paper to show contrary intuition, possible build viable models large by invoking a new $U(1)$ gauge symmetry boson mass 10$ eV. We refer these constructions as $3+1+ U(1)$ models. framework LSND and...
We examine the feasibility of deriving neutrino mixing parameters $δ$ and $θ_{13}$ from cosmic flavor composition under assumption that ratios neutrinos at source were $F_{ν_e}+F_{\barν_e}:F_{ν_μ}+F_{\barν_μ}: F_{ν_τ}+F_{\barν_τ}=1:2:0$. analyze various uncertainties enter derivation ratio shower-like to $μ$-tracks events which is only realistic information on telescopes such as ICECUBE. then what extent deviation initial $1:2:0$ can be tested by measurement this taking into account sources...