A5101807978- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Quantum Chromodynamics and Particle Interactions
- Atomic and Subatomic Physics Research
- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Nuclear physics research studies
- Quantum, superfluid, helium dynamics
- Nuclear Physics and Applications
- High-Energy Particle Collisions Research
- Particle accelerators and beam dynamics
- Advanced Radiotherapy Techniques
- Muon and positron interactions and applications
- Advanced NMR Techniques and Applications
- Medical Imaging Techniques and Applications
- Atomic and Molecular Physics
- Radiation Therapy and Dosimetry
- Advanced X-ray and CT Imaging
- Radiation Dose and Imaging
- Particle Accelerators and Free-Electron Lasers
- Digital Radiography and Breast Imaging
- Magnetic properties of thin films
- Planetary Science and Exploration
Brookhaven National Laboratory
2016-2025
Brookhaven College
2018-2025
Henan University
2025
Hangzhou Dianzi University
2025
Ministry of Education
2025
Guangzhou University of Chinese Medicine
2025
New Mexico State University
2024
University of Cincinnati
2020-2024
Harbin Engineering University
2024
Colorado State University
2002-2024
This White Paper presents the science case of an Electron-Ion Collider (EIC), focused on structure and interactions gluon-dominated matter, with intent to articulate it broader nuclear community. It was commissioned by managements Brookhaven National Laboratory (BNL) Thomas Jefferson Accelerator Facility (JLab) objective presenting a summary scientific opportunities goals EIC as follow-up 2007 NSAC Long Range plan. document is culmination community-wide effort in following series workshops...
The PROSPECT Collaboration presents their improved results with new limits on the oscillation of electron antineutrinos to light sterile neutrinos and energy spectrum measurements several short baselines.
We report the first measurement of target single spin asymmetries in semi-inclusive $^3{He}(e,e'\pi^\pm)X$ reaction on a transversely polarized target. The experiment, conducted at Jefferson Lab using 5.9 GeV electron beam, covers range 0.14 $< x <$ 0.34 with 1.3 $<Q^2<$ 2.7 GeV$^2$. Collins and Sivers moments were extracted from azimuthal angular dependence measured asymmetries. $\pi^\pm$ for $^3$He are consistent zero, except $\pi^+$ moment $x=0.34$, which deviates zero by 2.3$\sigma$....
We report new measurements of the parity-violating asymmetry ${A}_{\mathrm{PV}}$ in elastic scattering 3 GeV electrons off hydrogen and $^{4}\mathrm{He}$ targets with $⟨{\ensuremath{\theta}}_{\mathrm{lab}}⟩\ensuremath{\approx}6.0\ifmmode^\circ\else\textdegree\fi{}$. The result is ${A}_{\mathrm{PV}}=\mathbf{(}+6.40\ifmmode\pm\else\textpm\fi{}0.23(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.12(\mathrm{syst})\mathbf{)}\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$....
This White Paper presents the science case of an Electron-Ion Collider (EIC), focused on structure and interactions gluon-dominated matter, with intent to articulate it broader nuclear community. It was commissioned by managements Brookhaven National Laboratory (BNL) Thomas Jefferson Accelerator Facility (JLab) objective presenting a summary scientific opportunities goals EIC as follow-up 2007 NSAC Long Range plan. document is culmination community-wide effort in following series workshops...
We report a new, high-precision measurement of the proton elastic form factor ratio μpGE/GM for four-momentum transfer squared Q2=0.3–0.7(GeV/c)2. The was performed at Jefferson Lab (JLab) in Hall A using recoil polarimetry. With total uncertainty approximately 1%, new data clearly show that deviation from unity observed previous polarization measurements high Q2 continues down to lowest value this measurement. updated global fit includes results yields an electric (magnetic) roughly 2%...
New Jefferson Lab data are presented on the nuclear dependence of inclusive cross section from $^{2}\mathrm{H}$, $^{3}\mathrm{He}$, $^{4}\mathrm{He}$, $^{9}\mathrm{Be}$ and $^{12}\mathrm{C}$ for $0.3<x<0.9$, ${Q}^{2}\ensuremath{\approx}3--6\text{ }\text{ }{\mathrm{GeV}}^{2}$. These represent first measurement EMC effect $^{3}\mathrm{He}$ at large $x$ a significant improvement $^{4}\mathrm{He}$. The do not support previous $A$-dependent or density-dependent fits to suggest that quark...
We present new measurements of electron scattering from high-momentum nucleons in nuclei. These data allow an improved determination the strength two-nucleon correlations for several nuclei, including light nuclei where clustering effects can, first time, be examined. The also include kinematic region three-nucleon are expected to dominate.
Bioluminescence tomography (BLT) is a new molecular imaging mode, which being actively developed to reveal and cellular signatures as labeled by bioluminescent probes in living small animal. This technology can help diagnose diseases, evaluate therapies, facilitate drug development with mouse models. In this paper, we describe vivo experiments BLT, propose the reconstruction procedure of sources from optical data measured on body surface using modality fusion approach. The results show...
Purpose: The purpose of this study is to investigate the feasibility increasing system spatial resolution and scanning speed Hologic Selenia Dimensions digital breast tomosynthesis (DBT) scanner by replacing rotating mammography x‐ray tube with a specially designed carbon nanotube (CNT) source array, which generates all projection images needed for reconstruction electronically activating individual sources without any mechanical motion. stationary (s‐DBT) design aims (i) increase...
This Letter reports the first scientific results from observation of antineutrinos emitted by fission products $^{235}\mathrm{U}$ at High Flux Isotope Reactor. PROSPECT, Precision Reactor Oscillation and Spectrum Experiment, consists a segmented 4 ton $^{6}\mathrm{Li}$-doped liquid scintillator detector covering baseline range 7--9 m reactor operating under less than 1 water equivalent overburden. Data collected during 33 live days operation nominal power 85 MW yield detection $25\text{...
We studied simultaneously the 4He(e,e'p), 4He(e,e'pp), and 4He(e,e'pn) reactions at Q^2=2 [GeV/c]2 x_B>1, for a (e,e'p) missing-momentum range of 400 to 830 MeV/c. The knocked-out proton was detected in coincidence with or neutron recoiling almost back missing momentum, leaving residual A=2 system low excitation energy. These data were used identify two-nucleon short-range correlated pairs deduce their isospin structure as function momentum region where nucleon-nucleon force is expected...
We present several studies of convolutional neural networks applied to data coming from the MicroBooNE detector, a liquid argon time projection chamber (LArTPC). The algorithms studied include classification single particle images, localization and neutrino interactions in an image, detection simulated event overlaid with cosmic ray backgrounds taken real detector data. These demonstrate potential for identification or on interactions. also address technical issues that arise when applying...
The electric form factor of the neutron was determined from studies reaction ${}^{3}\stackrel{\ensuremath{\rightarrow}}{\mathrm{He}}(\stackrel{\ensuremath{\rightarrow}}{e},{e}^{\ensuremath{'}}n)pp$ in quasielastic kinematics Hall A at Jefferson Lab. Longitudinally polarized electrons were scattered off a target which nuclear polarization oriented perpendicular to momentum transfer. detected magnetic spectrometer coincidence with neutrons that registered large-solid-angle detector. More than...
Proton recoil polarization was measured in the quasielastic 4He(e,e'p)3H reaction at Q{2}=0.8 and 1.3 (GeV/c){2} with unprecedented precision. The polarization-transfer coefficients are found to differ from those of 1H(e,e'p) reaction, contradicting a relativistic distorted-wave approximation favoring either inclusion medium-modified proton form factors predicted by quark-meson coupling model or spin-dependent charge-exchange final-state interaction. For first time, ratio is studied as...
The parity-violating cross-section asymmetry in the elastic scattering of polarized electrons from unpolarized protons has been measured at a four-momentum transfer squared Q2 = 0.624 GeV and beam energy E =3.48 to be A_PV -23.80 +/- 0.78 (stat) 0.36 (syst) parts per million. This result is consistent with zero contribution strange quarks combination electric magnetic form factors G_E^s + 0.517 G_M^s 0.003 0.010 0.004 0.009 (ff), where third error due limits precision on electromagnetic...
We present an updated extraction of the proton electromagnetic form factor ratio, ${\ensuremath{\mu}}_{p}{G}_{E}/{G}_{M}$, at low ${Q}^{2}$. The factors are sensitive to spatial distribution proton, and precise measurements can be used constrain models proton. An improved selection elastic events reduced background contributions yielded a small systematic reduction in ratio ${\ensuremath{\mu}}_{p}{G}_{E}/{G}_{M}$ compared original analysis.
Statistical methods of presenting experimental results in constraining the neutrino mass hierarchy (MH) are discussed. Two problems considered and related to each other: how report findings for observed data, evaluate ability a future experiment determine hierarchy, namely, sensitivity experiment. For first problem where data have already been observed, classical statistical analysis involves constructing confidence intervals parameter {\Delta}m^2_{32}. These deduced from parent distribution...
The Precision Reactor Oscillation and Spectrum Experiment, PROSPECT, is designed to make a precise measurement of the antineutrino spectrum from highly-enriched uranium reactor probe eV-scale sterile neutrinos by searching for neutrino oscillations over meter-long distances. PROSPECT conceived as 2-phase experiment utilizing segmented $^6$Li-doped liquid scintillator detectors both efficient detection antineutrinos through inverse beta decay reaction excellent background discrimination....
Determination of the neutrino mass hierarchy using a reactor experiment at $\sim$60 km is analyzed. Such measurement challenging due to finite detector resolution, absolute energy scale calibration, as well degeneracies caused by current experimental uncertainty $|\Delta m^2_{32}|$. The standard $\chi^2$ method compared with proposed Fourier transformation method. In addition, we show that for such succeed, one must understand non-linearity level few tenths percent.