The purpose of high-energy particle physics (as opposed to high-energy nuclear physics) is to understand the properties and states of the basic building blocks of matter. What follows is an overview of the particle physics experiments in which Nevis currently participates. Note that the list of physics results is necessarily incomplete, since each is a rich source of new information about the structure of matter. Consult the web sites of the individual experiments for more information; some additional descriptions can be found on the Nevis REU research groups page.

Experiment	Nevis Scientists Participating (Phone Book)	Brief Description	Physics Results
Current Experiments
ATLAS experiment at LHC in CERN. The Nevis participation in USATLAS centers on the Liquid Argon Calorimeter and the pixel detector.	Gustaaf Brooijmans Katherine Copic Thomas Gadfort Andrew Haas Emlyn Hughes John Parsons William Seligman Francesco Spano P. Michael Tuts Lidija Zivkovic	High-Energy Proton-Proton Collider (center-of-mass energy = 14 TeV)	Search for the Higgs boson The physics of top and bottom quarks The search for new physics beyond the Standard Model, including supersymmetry
BooNE	Leslie Camilleri Janet Conrad Zelimir Djurcic Camillo Mariani Michael Shaevitz	Booster Neutrino Oscillation Experiment (E = 500 MeV at 500 meters)	Search for neutrino oscillations
Ebubble - R&D into a cryogenic noble fluid tracker	William Willis Raphael Galea	Detection of proton-proton fusion reaction neutrinos in the sun. (99.75% of the total neutrino flux with E<420keV)	Solar Neutrino physics - testing the Standard Solar Model, understanding the low-energy (vacuum dominated) neutrino oscillation phenomenon Electronic Detection: the mechanism of electron avalanche gain, charge collection, electrode structure, signal formation and noise measurements Cryogenic and Mechanical Design Optical Measurements: imaging tracks of electron bubbles and their transitions by fluorescence or photo-ionization
D0 experiment at Fermilab	Gustaaf Brooijmans Thomas Gadfort Andrew Haas Sabine Lammers Michael Mulhearn John Parsons P. Michael Tuts Lidija Zivkovic	Proton-Proton Collider (center-of-mass energy = 2 TeV)	The discovery of the top quark The physics of the bottom quark The mass of the W boson QCD measurements Searches for new physics
Older research projects conducted at Nevis
Pierre Auger Observatory in Malargue, Argentina	Brian Connolly Michael Prouza Stefan Westerhoff	Ultra-high-energy Cosmic Rays (1016 - 1020 eV)	Measure the energy spectrum of cosmic rays to the highest energy possible, > 1020 eV Measure the cosmic ray composition as a function of energy Search for sources of ultra-high-energy comic rays
HiRes Fly's Eye experiment in Utah	John Boyer Brian Connolly Bruce Knapp Eric Mannel Michal Seman Stefan Westerhoff	Ultra-high-energy Cosmic Rays (1016 - 1020 eV)	Measure the energy spectrum of cosmic rays to the highest energy possible, > 1020 eV Measure the cosmic ray composition as a function of energy Search for sources of ultra-high-energy comic rays
Neutrino Factory/Muon Collider	Janet Conrad Raphael Galea Michael Shaevitz	20-50 GeV muon storage ring producing 1020-1021 neutrinos per year	Neutrino oscillations CP violation in the lepton sector Origin of quark and lepton flavors
NuTeV fixed-target experiment	Janet Conrad Zelimir Djurcic Camillo Mariani Michael Shaevitz	Neutrino-Nucleon Scattering (20 to 600 GeV)	Electroweak measurements (the Weinberg angle) Quark and gluon structure of the proton, including the strange and charm seas The mass of the charm quark
ZEUS experiment at HERA in DESY (Germany)	Allen Caldwell William Schmidke Frank Sciulli	Electron-Proton Collider (27.5 GeV electons x 920 GeV protons)	Study of the proton structure (quark and gluon densities) Study of high energy diffraction Tests of QCD via exclusive vector meson production Tests of QCD in jets, hadronic final states Tests of Electroweak Theory at High Q2 Search for new forces/new particles

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