Meghna Bhattacharya
A5089891065- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Astrophysics and Cosmic Phenomena
- Particle accelerators and beam dynamics
- Particle Detector Development and Performance
- Radio Frequency Integrated Circuit Design
- Dark Matter and Cosmic Phenomena
- Muon and positron interactions and applications
- Superconducting Materials and Applications
- Radiation Detection and Scintillator Technologies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Scientific Computing and Data Management
- Particle Accelerators and Free-Electron Lasers
- Distributed and Parallel Computing Systems
- Noncommutative and Quantum Gravity Theories
- Advanced Data Processing Techniques
- Neural Networks and Applications
- Speech Recognition and Synthesis
- Advanced Data Storage Technologies
- Parallel Computing and Optimization Techniques
- Scientific Research and Discoveries
- Gamma-ray bursts and supernovae
- Atomic and Subatomic Physics Research
- Nuclear Physics and Applications
Fermi National Accelerator Laboratory
2022-2024
University of Mississippi
2020-2021
Brookhaven College
2019
We present the first results of Fermilab Muon g-2 Experiment for positive muon magnetic anomaly $a_\mu \equiv (g_\mu-2)/2$. The is determined from precision measurements two angular frequencies. Intensity variation high-energy positrons decays directly encodes difference frequency $\omega_a$ between spin-precession and cyclotron frequencies polarized muons in a storage ring. ring field measured using nuclear resonance probes calibrated terms equivalent proton spin precession...
We present a new measurement of the positive muon magnetic anomaly, a_{μ}≡(g_{μ}-2)/2, from Fermilab Muon g-2 Experiment using data collected in 2019 and 2020. have analyzed more than 4 times number positrons decay our previous result 2018 data. The systematic error is reduced by factor 2 due to better running conditions, stable beam, improved knowledge field weighted distribution, ω[over ˜]_{p}^{'}, anomalous precession frequency corrected for beam dynamics effects, ω_{a}. From ratio...
The Muon g-2 Experiment at Fermi National Accelerator Laboratory (FNAL) has measured the muon anomalous precession frequency $ω_a$ to an uncertainty of 434 parts per billion (ppb), statistical, and 56 ppb, systematic, with data collected in four storage ring configurations during its first physics run 2018. When combined a precision measurement magnetic field experiment's ring, determines anomaly $a_μ({\rm FNAL}) = 116\,592\,040(54) \times 10^{-11}$ (0.46 ppm). This article describes...
The Fermi National Accelerator Laboratory has measured the anomalous precession frequency $a^{}_\mu = (g^{}_\mu-2)/2$ of muon to a combined precision 0.46 parts per million with data collected during its first physics run in 2018. This paper documents measurement magnetic field storage ring. is monitored by nuclear resonance systems and calibrated terms equivalent proton spin spherical water sample at 34.7$^\circ$C. weighted distribution resulting $\tilde{\omega}'^{}_p$, denominator ratio...
We present details on a new measurement of the muon magnetic anomaly, $a_\mu = (g_\mu -2)/2$. The result is based positive data taken at Fermilab's Muon Campus during 2019 and 2020 accelerator runs. uses $3.1$ GeV$/c$ polarized muons stored in $7.1$-m-radius storage ring with $1.45$ T uniform field. value $ a_{\mu}$ determined from measured difference between spin precession frequency its cyclotron frequency. This normalized to strength field, using Nuclear Magnetic Resonance (NMR). ratio...
We present a new measurement of the positive muon magnetic anomaly, $a_\mu \equiv (g_\mu - 2)/2$, from Fermilab Muon $g\!-\!2$ Experiment using data collected in 2019 and 2020. have analyzed more than 4 times number positrons decay our previous result 2018 data. The systematic error is reduced by factor 2 due to better running conditions, stable beam, improved knowledge field weighted distribution, $\tilde{\omega}'^{}_p$, anomalous precession frequency corrected for beam dynamics effects,...
We present a search for long-lived Higgs portal scalars (HPS) and heavy neutral leptons (HNL) decaying in the MicroBooNE liquid-argon time projection chamber. The measurement is performed using data collected synchronously with NuMI neutrino beam from Fermilab's Main Injector total exposure corresponding to $7.01 \times 10^{20}$ protons on target. set upper limits at $90\%$ confidence level mixing parameter $\lvert U_{\mu 4}\rvert^2$ ranging 4}\rvert^2<12.9\times 10^{-8}$ Majorana HNLs mass...
This paper presents the beam dynamics systematic corrections and their uncertainties for Run-1 data set of Fermilab Muon g-2 Experiment. Two to measured muon precession frequency $\omega_a^m$ are associated with well-known effects owing use electrostatic quadrupole (ESQ) vertical focusing in storage ring. An average vertically oriented motional magnetic field is felt by relativistic muons passing transversely through radial electric components created ESQ system. The correction depends on...
Today's world of scientific software for High Energy Physics (HEP) is powered by x86 code, while the future will be much more reliant on accelerators like GPUs and FPGAs. The portable parallelization strategies (PPS) project Center Computational Excellence (HEP/CCE) investigating solutions portability techniques that allow coding an algorithm once, ability to execute it a variety hardware products from many vendors, especially including accelerators. We think without these solutions, success...
This work demonstrates that two systematic errors, coherent betatron oscillations (CBO) and muon losses can be reduced through application of radio frequency (RF) electric fields, which ultimately increases the sensitivity $g-2$ experiments. As ensemble polarized muons goes around a weak focusing storage ring, their spin precesses, when they decay interaction, $\mu^+ \rightarrow e^+ \nu_e \bar{\nu_\mu}$, positrons are detected by electromagnetic calorimeters. In addition to expected...
One of the major scientific goals Deep Underground Neutrino Experiment (DUNE) is to detect and measure neutrino flux from galactic core-collapse supernovae. These neutrinos, which exist in low energy range up a few tens MeV are responsible for carrying away over 99% gravitational binding supernova, provide an opportunity study end life evolution massive stars, as well unique properties interactions neutrinos. Because supernovae expected occur only on timespan every decades, it crucial that...
One of the major scientific goals Deep Underground Neutrino Experiment (DUNE) is to detect and measure neutrino flux from galactic core-collapse supernovae. These neutrinos, which exist in low energy range up a few tens MeV are responsible for carrying away over 99% gravitational binding supernova, provide an opportunity study end life evolution massive stars, as well unique properties interactions neutrinos. Because supernovae expected occur only on timespan every decades, it crucial that...
Modern large-scale physics experiments create datasets with sizes and streaming rates that can exceed those from industry leaders such as Google Cloud Netflix. Fully processing these requires both sufficient compute power efficient workflows. Recent advances in Machine Learning (ML) Artificial Intelligence (AI) either improve or replace existing domain-specific algorithms to increase workflow efficiency. Not only the performance of current algorithms, but they often be executed more quickly,...
uses a data-driven technique to determine the contribution each multiplicity bin from neutrino interactions and cosmic-induced backgrounds. The restricted phase space employed makes measurement most sensitive higher-energy charged particles expected primary neutrino-argon collisions less lower energy protons be produced in final state of collision products with target argon nucleus.