Publications (15)
Precision measurements of the total and partial widths of the psi(2S) charmonium meson with a new complementary-scan technique in antiproton-proton annihilations
Fermilab E835 Collaboration, M. Andreotti, S. Bagnasco +46
We present new precision measurements of the psi(2S) total and partial widths from excitation curves obtained in antiproton-proton annihilations by Fermilab experiment E835 at the…
COVID-19 in a social reinsurance framework: Forewarned is forearmed
S. Sahin, M. C. Boado-Penas, C. Constantinescu +5
The crisis caused by COVID-19 revealed the global unpreparedness to handle the impact of a pandemic. In this paper, we present a statistical analysis of the data related to the COV…
Transverse instability of the antiproton beam in the Recycler Ring
L. R. Prost, C. M. Bhat, A. Burov +4
The brightness of the antiproton beam in Fermilab's 8 GeV Recycler ring is limited by a transverse instability. This instability has occurred during the extraction process to the T…
Improved Limits on Spin-Dependent WIMP-Proton Interactions from a Two Liter CFI Bubble Chamber
E. Behnke, J. Behnke, S. J. Brice +14
Data from the operation of a bubble chamber filled with 3.5 kg of CFI in a shallow underground site are reported. An analysis of ultrasound signals accompanying bubble nuclea…
A compact beta particle momentum detector
D. Kodroff, M. Hu, K. Adcock +8
We present the design, development, and first calibration results of a compact beta electron detector for the Quantum Invisible Particle Sensor (QuIPS) experiment. The QuIPS electr…
First dark matter search results from a 4-kg CFI bubble chamber operated in a deep underground site
E. Behnke, J. Behnke, S. J. Brice +19
New data are reported from the operation of a 4.0 kg CFI bubble chamber in the 6800-foot-deep SNOLAB underground laboratory. The effectiveness of ultrasound analysis in discr…
Improved Spin-Dependent WIMP Limits from a Bubble Chamber
E. Behnke, J. I. Collar, P. S. Cooper +13
Bubble Chambers provided the dominant particle detection technology in accelerator experiments for several decades, eventually falling into disuse with the advent of other techniqu…
Arbitrary cylindrical vector beam generation enabled by polarization-selective Gouy phase shifter
J. Jia, K. Zhang, G. Hu +7
Cylindrical vector beams (CVBs), which possesses polarization distribution of rotational symmetry on the transverse plane, can be developed in many optical technologies. Convention…
A general moment NRIXS approach to the determination of equilibrium Fe isotopic fractionation factors: application to goethite and jarosite
N. Dauphas, M. Roskosz, E. E. Alp +7
We measured the reduced partition function ratios for iron isotopes in goethite FeO(OH), potassium-jarosite KFe3(SO4)2(OH)6, and hydronium-jarosite (H3O)Fe3(SO4)2(OH)6, by Nuclear…
Measurements and Analysis of Beam Transfer Functions in the Fermilab Recycler Ring Using the Transverse Digital Damper System
N. Eddy, J. L. Crisp, M. Hu
The primary purpose of the Fermilab Recycler Ring Transverse Digital Damper System is to prevent instabilities due to high phase space densities of the cooled antiproton beam. The…
Search for muonic decays of the antiproton at the Fermilab Antiproton Accumulator
S. Geer, J. Marriner, R. Ray +10
A search for antiproton decay has been made at the Fermilab Antiproton Accumulator. Limits are placed on six antiproton decay modes which contain a final-state muon. At the 90% C.L…
Epitaxial Graphene Growth on SiC Wafers
D. Kurt Gaskill, Glenn G. Jernigan, Paul M. Campbell +17
An in vacuo thermal desorption process has been accomplished to form epitaxial graphene (EG) on 4H- and 6H-SiC substrates using a commercial chemical vapor deposition reactor. Corr…
Bulk viscous cosmology: statefinder and entropy
M. Hu, Xin He Meng
The statefinder diagnostic pair is adopted to differentiate viscous cosmology models and it is found that the trajectories of these viscous cosmology models on the statefinder pair…
THMC instabilities and the Multiphysics of Earthquakes
K. Regenauer-Lieb, M. Hu, C. Schrank
Theoretical approaches to earthquake instabilities propose shear dominated instabilities as a source mechanism. Here we take a fresh look at the role of possible volumetric instabi…
Measurement of the branching ratios , and
M. Andreotti, S. Bagnasco, W. Baldini +46
We have measured several branching ratios for decay using the data collected by FNAL E835 experiment during year 2000, obtaining ${\cal B}(Ï^\prime \to e^+ e^-) = 0.00…