Radial compression of a proton cloud was performed in a multiring trap which was designed to trap and cool a large number of antiprotons for the production of low-energy ( 10-1000 eV ) antiproton beams. The resonance frequency for the radial compression was almost constant from 3 x 10(5) to 3 x 10(6) protons. The collision process of the trapped protons was also investigated to estimate the ene...

We examine the production of open charm in antiproton annihilation on finite nuclei. The enhancement of the subthreshold production cross section, even in a nucleus as light as carbon, should provide a clean signature of the reduction in the masses of these mesons in-medium. We also show that a careful analysis of the D and D spectra can yield important information on the cross section for DN s...

Some of the last results on low energy antiproton physics are reviewed. First Faddeev calculations for ¯ nd scattering length are presented.

Recently, it has been suggested that a signi cant test of CPT invariance can be derived by comparing the proton lifetime ( p > 10 32 years) with the antiproton lifetime p . CPT invariance would require p = p . A deviation from CPT induced by gravity e ects, if linear in the ratio between proton mass (mp) to Planck mass (MP l), could generate a p 5 10 31 M2P l (GeV) years 10 8 years. A precise m...

Large proton and antiproton enhancement with respect to pions has been observed at intermediate transverse momentum pT ≈ 2-5 GeV/c in Au+Au collisions at RHIC. To investigate the possible source of this anomaly, the production of φ mesons and two particle angular correlations triggered by mid-pT baryons or mesons are studied. We also present the first measurement of proton and antiproton produc...

The PANDA detector at the future Facility for Antiproton and Ion Research (FAIR) is currently being constructed in Darmstadt, Germany. It contains a fixed proton target an antiproton beam with momentum range between 1.5 GeV/c to 15 GeV/c. Two Cherenkov detectors are used identify charged hadrons. Disc DIRC (EDD) covers polar angles 5° 22° endcap region. In order test performance of EDD prototyp...

Abstract PUMA, antiProton Unstable Matter Annihilation, is a nuclear-physics experiment at CERN aiming probing the surface properties of stable and rare isotopes by use low-energy antiprotons. Low-energy antiprotons offer very unique sensitivity to neutron proton densities annihilation site, i.e. in tail nuclear density. Today, no facility provides collider radioactive ions antiprotons: while n...