A5105982093- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Atomic and Subatomic Physics Research
- Nuclear reactor physics and engineering
- Neutrino Physics Research
- Radiation Detection and Scintillator Technologies
- Particle Accelerators and Free-Electron Lasers
- Nuclear Physics and Applications
- Nuclear physics research studies
- Dark Matter and Cosmic Phenomena
- Graphite, nuclear technology, radiation studies
- IoT-based Smart Home Systems
- Cyclone Separators and Fluid Dynamics
- Stochastic processes and statistical mechanics
- Experimental Learning in Engineering
- Muon and positron interactions and applications
- Engineering Applied Research
- Particle accelerators and beam dynamics
- Radiation Therapy and Dosimetry
- Advanced Radiotherapy Techniques
- Advanced Algorithms and Applications
- Computational Physics and Python Applications
- Advanced NMR Techniques and Applications
Michigan State University
1991-2024
Fermi National Accelerator Laboratory
2005
Texas A&M University
2002
University of Rochester
1972-1977
Stanford University
1976
U.S. National Science Foundation
1975
We have measured the total inelastic cross section (${\ensuremath{\sigma}}_{\mathrm{inel}}$) and charged-particle multiplicities obtained in $\mathrm{pp}$ collisions at 405 GeV/c. The data are from a preliminary 12 000-picture bubble-chamber exposure. find ${\ensuremath{\sigma}}_{\mathrm{inel}}=32.8\ifmmode\pm\else\textpm\fi{}1.0$ mb; low moments of multiplicity distribution for negative particles $〈{n}_{\ensuremath{-}}〉=3.50\ifmmode\pm\else\textpm\fi{}0.07$,...
We present preliminary results from a sample of \ensuremath{\sim} 1200 events obtained an exposure the 30-in. Argonne National Laboratory---National Accelerator Laboratory liquid-hydrogen bubble chamber to 102-$\frac{\mathrm{GeV}}{c}$ protons. The elastic and total inelastic cross sections are respectively 6.9 \ifmmode\pm\else\textpm\fi{} 1.0 32.8 1.1 mb. parameters multiplicity distribution for negative tracks $〈{n}_{\ensuremath{-}}〉=2.17\ifmmode\pm\else\textpm\fi{}0.07$,...
We study the diffractive component in $\mathrm{pp}$ collisions at 102 and 405 GeV examine its energy dependence ${M}^{2}$ $x$ variables. The total cross section for $|x|>0.9$ remains approximately constant: 6.6\ifmmode\pm\else\textpm\fi{}0.5 6.8\ifmmode\pm\else\textpm\fi{}0.7 mb two energies. However, both $\frac{d\ensuremath{\sigma}}{\mathrm{dx}}$ $\frac{d\ensuremath{\sigma}}{d{M}^{2}}$ show strong within region. dependences of do not have characteristics a triple-Pomeron term...
We have measured charged-particle multiplicities and elastic inelastic cross sections for ${\ensuremath{\pi}}^{+}p$ $\mathrm{pp}$ interactions at 60 GeV/c. The data are from a 30 000-picture exposure of the 30-inch bubble chamber to tagged but unseparated positive-particle beam Fermilab. low-order moments multiplicity distributions all charged particles $〈n〉 = 5.60\ifmmode\pm\else\textpm\fi{}0.09$, ${f}_{2} 0.96\ifmmode\pm\else\textpm\fi{}0.31$, $\frac{〈n〉}{D}...
We investigate the distribution of charge in events produced by $pp$ collisions at 102 and 400 GeV/c. The data are from exposures Fermi National Accelerator Laboratory 30-in. bubble chamber. A comparison energy dependence with Monte Carlo simulations random distributions provides support for hypothesis local compensation charge. Results on transfer qualitative agreement predictions an independent neutral-cluster emission model.
We present a comparative study of inclusive ${\ensuremath{\Delta}}^{++}(1236)$ production in $\mathrm{pp}$ collisions at 102 and 400 GeV/c. To better than 10% accuracy the invariant cross section does not depend on energy. A remarkable similarity is observed between properties neutral-baryon system produced association with known characteristics ${\ensuremath{\pi}}^{\ensuremath{-}}p$ collisions.
We report new measurements of neutron-nuclear total cross sections obtained at Fermilab. The data are for neutron momenta between 30 and 300 GeV/c nuclear targets carbon, aluminum, copper, lead.
We examine the energy dependence of ${\ensuremath{\pi}}^{+}$ and ${\ensuremath{\pi}}^{\ensuremath{-}}$ production in $\mathrm{pp}$ collisions for incident laboratory momenta between 6 400 GeV/c. The cross section pion emission into backward hemisphere frame falls substantially with momentum. This departure from hypothesis limiting fragmentation excess 20 GeV/c is consistent an form expected on basis Mueller-Regge ideas.
We present an overview of the CDF End Plug Upgrade Project. The structure upgraded calorimeter and design optical readout system is discussed. describe production scintillating tile/fiber multi-tile assemblies (megatiles) quality control results megatiles produced for Hadron Calorimeter. sample presented in this analysis corresponds to approximately 16500 individual assemblies. discuss requirements distributions quantities measured during QC process. various contributions tile-to-tile light...
We have measured two-pion correlations in rapidity and transverse momentum $\mathrm{pp}$ collisions at 102 GeV/c. The correlations, which are highly sensitive to the charges of pions, display a behavior consistent with that expected on basis short-range-order hypothesis, and, when compared model does not contain explicit suggest presence substantial dynamic data.
The Central Outer Tracker (COT) is a large axial drift chamber in the Collider Detector at Fermilab operating with gas mixture that 50/50 argon/ethane an admixture of 1.7% isopropanol. In its first two years operation COT showed unexpected aging worst parts experiencing gain loss ~50% for accumulated charge ~35 mC/cm. By monitoring pulse height hits on good tracks, it was possible to determine as function time and location chamber. addition, currents high voltage supplies gave another...
The results of an investigation the correlation between mass ($M$) and transverse momentum (${p}_{T}$) multipion systems produced in $pp$ collisions at 102 400 GeV/c indicate that, for fixed $M$, ${p}_{T}$ distributions are only weakly dependent on incident energy, as well charge multiplicity system. dependence $〈{p}_{T}〉$ $M$ is much stronger similar to that measured discrete hadronic states.
We present a study of two-particle rapidity correlations in inclusive and semi-inclusive reactions $pp$ collisions at 102 400 GeV/c. In particular, we examine the charge, multiplicity, $s$ dependence these correlations. Our data provide evidence for presence energy-independent short-range rapidity. Significant contributions to arise from having high multiplicities. Correlations among particles like charge are weaker than opposite charge.