At present, the only place in the world where experiments utilizing low-energy antiprotons can be performed is the AD at CERN. The MUSASHI trap, as part of the ASACUSA collaboration, enables access to antiproton energies of a few hundreds of eV. Whilst the MUSASHI trap enables cutting-edge research, the available beam quality and luminosity is not sufficient for collision experiments on the lev...

Fermilab is in the midst of a program to raise the luminosity in the Tevatron proton-antiproton collider by at least a factor of five above the currently achieved level of 1.6×1031 cm-2sec-1. Components of this program include the construction of a new synchrotron, the Main Injector, a new antiproton storage ring, the Recycler, and a variety of improvements to the existing Antiproton Source and...

The ATRAP experiment at the CERN Antiproton decelerator (AD) aiming for a precise CPT test by studying the antihydrogen atom includes a detection system for the antiproton annihilation products. Antihydrogen production studies require the knowledge of the produced antihydrogen atoms as well as absolute antiproton losses during the development. In 2008 the ATRAP experiment has been modified by a...

We report on a new measurement of the cosmic ray antiproton spectrum. The data were collected by the balloon-borne experiment CAPRICE98 which was flown on 28-29 May 1998 from Fort Sumner, New Mexico, USA. The experiment used the NMSU-WIZARD/CAPRICE98 balloon-borne magnet spectrometer equipped with a gas Ring Imaging Cherenkov (RICH) detector, a time-offlight system, a tracking device consisting...

We studied the variation of e and p̄ top of the atmosphere spectra due to the parameters uncertainties of the Milky Way geometry, propagation models and cross sections. We used the B/C data and Galprop code for the propagation analysis. We also derived the uncertainty bands for subFe/Fe ratio, H, He, antiproton to proton ratio and the positron charge fraction. Finally, we considered a neutralino...

S. Geer, J. Marriner, M. Martens, R.E. Ray, J. Streets, W. Wester Fermi National Accelerator Laboratory, Batavia, Illinois 60510 M. Hu, G.R. Snow University of Nebraska, Lincoln, Nebraska 68588 T. Armstrong Pennsylvania State University, University Park, Pennsylvania 16802 C. Buchanan, B. Corbin, M. Lindgren, T. Muller† University of California at Los Angeles, Los Angeles, California 90024 R. G...

The various aspects of antiproton physics are shortly reviewed, and its relevance for the possible discovery of new particles and effects is pointed out. Then a survey of the nucleon-antinucleon interactions is given. In the nucleon-antinucleon annihilations, there is a big amount of experimental data that call for theoretical explanation. Importance of specific spin and isospin channels for ou...

We present calculations for the impact-parameter dependence of K-shell ionization rates in p-Cu and in p-Ag collisions at various projectile energies. We show that the effect of the attractive Coulomb potential on the Rutherford trajectory and the antibinding effect caused by the negative charge of the antiproton result in a considerable increase of the ionization probability. Total ionization ...

The PAMELA experiment is a satellite-borne apparatus designed to study charged particles, and especially antiparticles, in the cosmic radiation. The apparatus is mounted on the Resurs DK1 satellite which was launched on 15 June 2006. PAMELA has been traveling around the earth along an elliptical and semi-polar orbit for almost five years. It mainly consists of a permanent magnetic spectrometer,...

Associated strangeness production close to threshold is a particularly clean example of how energy is converted into hadronic matter. Final results from the completed experiments of the PS185 collaboration at LEAR/ CERN, using the antiproton-proton interaction to produce antihyperon-hyperon pairs, demonstrate that such studies form a powerful tool. First results from the ongoing investigations ...