ACT Atacama Cosmology Telescope. This is a proposed 6 meter telescope that will look at millimeter radiation from the early universe to map the formation of cosmic structure. www.hep.upenn.edu/act AMS Alpha Magnetic Spectrometer is a particle detector being constructed for the International Space Station. It will observe properties of electrons, positrons, protons, antiprotons and nuclei in high-energy radiation in space. cyclo.mit.edu/ams BABAR This experiment, which focuses on B mesons, uses the PEP II e+e- storage ring at the Stanford Linear Accelerator Center (SLAC). One of its primary goals is to investigate why the universe appears to contain matter but no antimatter. BaBar and Belle discovered the first evidence of CP violation outside of the K meson system. www.slac.stanford.edu/BFROOT BELLE This experiment, which focuses on B mesons produced at the KEKB e+e- collider, is located at the KEK laboratory in Japan. One of its primary goals is to investigate why the universe appears to contain matter but no antimatter. BaBar and Belle discovered the first evidence of CP violation outside of the K meson system. belle.kek.jp/ BTEV A proposed experiment at the Fermilab Tevatron to study decays of B mesons in detail in hadron collisions. BTeV and LHC-b will do unique studies of the Bs mesons and explore their role in the matter antimatter asymmetry of the universe. www-btev.fnal.gov CNGS CERN Neutrinos to Gran Sasso.The next phase of the CERN neutrino program uses a neutrino beam from CERN to detectors in the Gran Sasso tunnel to study neutrino oscillations. proj-cngs.web.cern.ch CLEO-C This experiment is based at the CESR accelerator. It is focused on high-precision studies of charm mesons to validate precision lattice calculations. www.lepp.cornell.edu CMB POLARIZATION A variety of experiments at various stages of development are studying the polarization of the cosmic microwave background. Measurements of partial polarization of the CMB on small scales will yield fundamental information about the evolution of the early universe and provide key tests of our current theories. GLAST Gamma Ray Large Area Space Telescope. A satellite-based experiment, presently under construction, which will detect high-energy gamma-rays from cosmic sources. GLAST measurements will provide crucial data on acceleration mechanisms in astrophysical settings, and could provide constraints on dark matter models through searches for annihilation features at gamma-ray energies. www-glast.stanford.edu ICECUBE IceCube is a one-cubic-kilometer international high-energy neutrino observatory being built and installed in the ice below the South Pole Station. IceCube will search for neutrinos from gamma ray bursts, black holes and neutron stars. IceCube will also provide important constraints on models of dark matter. icecube.wisc.edu INTERNATIONAL LINEAR COLLIDER A proposed international TeV e+e- accelerator based on two linear accelerators whose beams collide head-on. The linear collider will make precision measurements of the new TeV-scale physics discovered by LHC. www.interactions.org/linearcollider/ JDEM Joint Dark Energy Mission. This is a proposed satellite-based experiment for finding and studying supernovae to determine the evolution of the dark energy in the universe. JDEM will also use weak and strong lensing of distant galaxies to better measure both the dark energy and dark matter distributions in the universe. JPARC Japan Proton Accelerator Research Complex. A high- intensity proton accelerator facility in Japan that will produce intense neutrino beams to study neutrino oscillation parameters. jkj.tokai.jaeri.go.jp KAMLAND A 1000-ton scintillation detector located in the Kamioka mine in Japan. KamLAND has observed oscillations of antineutrinos from nearby nuclear reactors. www.awa.tohoku.ac.jp/html/KamLAND/ K2K This experiment aims a neutrino beam from the KEK accelerator to the SuperKamiokande detector. It has given evidence for neutrino oscillations consistent with those seen in atmospheric neutrinos. neutrino.kek.jp K0PI0 An approved experiment that searches for a rare decay of neutral K-mesons into a neutral pion and two neutrinos. This decay provides valuable information about quark mixing and CP violation. www.bnl.gov/rsvp/ LATTICE COMPUTATIONAL FACILITIES Proposed computational facilities used to calculate strong interaction dynamics. LHC LARGE HADRON COLLIDER A 14 TeV proton-proton collider under construction at the CERN laboratory in Geneva, Switzerland. Two large international detectors, ATLAS and CMS, will explore new physics at the TeV scale. The LHC opens a new high-energy frontier for the field. lhc.web.cern.ch/lhc/ LHC-B An experiment under construction at CERN to study B mesons in detail in hadron collisions. BTeV and LHC-b will do unique studies of the Bs mesons and explore their role in the matter antimatter asymmetry of the Universe. lhcb.web.cern.ch/lhcb/ LIGO Laser Interferometer Gravitational Wave Observatory. A facility to detect astrophysical gravitational waves consisting of two widely separated installations in Hanford, Washington and Livingston, Louisiana, operated in unison as a single observatory. www.ligo.caltech.edu LSST Large-aperture Synoptic Survey Telescope. A proposed wide-field ground-based optical telescope that will survey a major fraction of the sky every few days. It will enable studies of weak gravitational lensing that will provide constraints on dark matter and dark energy in the universe. Other applications include the search for near-Earth asteroids that could potentially collide with the Earth. http://books.nap.edu/books/0309070317/html/38.html#pagetop MECO Muon to Electron Conversion Experiment. An approved experiment to search for the conversion of muons to electrons in the presence of nuclei. This would be a signal of lepton flavor violation. www.bnl.gov/rsvp/ MINIBOONE Mini-Booster Neutrino Experiment. This experiment, based at Fermilab, is searching for oscillations between muon and electron neutrinos using a beam of neutrinos. www-boone.fnal.gov NEUTRINOLESS DOUBLE BETA DECAY Sensitive experiments to search for evidence of a lepton number violating decay that would indicate the neutrino is its own antiparticle. NUMI/MINOS Neutrinos at the Main Injector/ Main Injector Neutrino Oscillation Search. An experiment coming on line in 2005 that shoots neutrinos from the Main Injector at Fermilab toward an underground target 730 km (430 miles) away in Soudan, Minnesota. www-numi.fnal.gov PLANCK A European space mission under construction to make precision measurements of fluctuations in the cosmic microwave background. www.rssd.esa.int/index.php?project=PLANCK PRECISION GRAVITY Small scale experiments that test the theory of gravity to sub-millimeter scales. PROTON DECAY EXPERIMENTS Proposed very large underground experiments that are sensitive to the decay of the proton. These detectors can also be used as detectors for accelerator-based neutrino oscillation experiments. REACTOR V EXPERIMENTS Proposed experiments to use neutrinos from reactors to measure parameters of neutrino oscillation. RIA Rare Isotope Accelerator. A proposed facility to produce and explore new rare isotopes that cannot be found on Earth. www.orau.org/ria RHIC Relativistic Heavy Ion Collider. A Brookhaven National Laboratory acccelerator that collides heavy ions with 100 GeV per nucleon per beam to create new states of matter. www.bnl.gov/RHIC SDSS Sloan Digital Sky Survey. A ground-based telescope that maps the sky, determining positions and absolute brightness of over 100 million celestial objects. www.sdss.org SNO Sudbury Neutrino Observatory. A heavy-water Cherenkov detector located 2 km below the surface in a nickel mine in Ontario. SNO has given compelling evidence for oscillation of electron neutrinos to other flavors, providing the explanation for the solar neutrino problem. www.sno.phy.queensu.ca SPT South Pole Telescope. An 8 meter precision sub-millimeter-wave telescope that is under construction. SPT will do a large scale survey of distant galaxy clusters and map the evolution of large-scale structure in the very early universe. astro.uchicago.edu/spt/ SUPERKAMIOKANDE This experiment, located in the Kamioka mine in Japan, is the successor to the smaller Kamiokande experiment. SuperKamiokande provided compelling evidence for neutrino oscillations in neutrinos created by cosmic rays bombarding the Earth’s atmosphere. www-sk.icrr.u-tokyo.ac.jp/doc/sk TEVATRON The 2 TeV proton-antiproton collider at Fermilab, currently the world’s highest-energy accelerator. At the Tevatron, two large general purpose detectors, CDF (www-cdf.fnal.gov) and D0 (www-d0.fnal.gov), are studying the particles of the standard model and looking for new physics beyond it. CDF and D0 discovered the top quark. UNDERGROUND DARK MATTER DETECTORS Sensitive underground detectors that search for dark matter through its interactions with matter. VERITAS Very Energetic Radiation Imaging Telescope Array System. A ground-based gamma-ray observatory that detects optical flashes in the atmosphere produced by air showers generated by cosmic gamma-rays in the GeV—TeV energy range. VERITAS studies cosmic acceleration mechanisms and exotic objects such as supernovae remnants and active galactic nuclei. It will also search for dark matter in our galaxy. veritas.sao.arizona.edu V SUPERBEAMS Possible future accelerators capable of producing intense beams of neutrinos to make precision measurements of neutrinos and perhaps be sensitive to CP violation in the neutrinos. WMAP Wilkinson Microwave Anisotropy Probe. A satellite mission that has made the most sensitive measurements to date of the fluctuations in the cosmic microwave background, leading to tight constraints on cosmological parameters. map.gsfc.nasa.gov