Antihydrogen production and precision experiments
Creators
- Holzscheiter, M.H.1
- Bendiscioli, G.
- Bertin, A.
- Bollen, G.
- Bruschi, M.
- Cesar, C.
- Charlton, M.
- Corradini, M.
- DePedis, D.
- Doser, M.
- Eades, J.
- Fedele, R.
- Feng, X.
- Galluccio, F.
- Goldman, T.
- Hangst, J.S.
- Hayano, R.
- Horvath, D.
- Hughes, R.J.
- King, N.S.P.
- Kirsebom, K.
- Knudsen, H.
- Lagomarsino, V.
- Landua, R.
- Laricchia, G.
- Lewis, R.A.
- Lodi Rizzini, E.
- Macri, M.
- Manuzio, G.
- Marconi, U.
- Masullo, M.R.
- Merrison, J.P.
- Moeller, S.P.
- Morgan, G.L.
- Nieto, M.M.
- Piccinini, M.
- Poggiani, R.
- Rotondi, A.
- Rouleau, G.
- Salvini, P.
- Semprini-Cesari, N.
- Smith, G.A.
- Surko, C.M.
- Testera, G.
- Torelli, G.
- Uggerhoej, E.
- Vaccaro, V.G.
- Venturelli, L.
- Vitale, A.
- Widmann, E.
- Yamazaki, T.
- Yamazaki, Y.
- Zanello, D.
- Zoccoli, A.
- 1. Los Alamos National Lab., NM (United States)
Description
The study of CPT invariance with the highest achievable precision in all particle sectors is of fundamental importance for physics. Equally important is the question of the gravitational acceleration of antimatter. In recent years, impressive progress has been achieved in capturing antiprotons in specially designed Penning traps, in cooling them to energies of a few milli-electron volts, and in storing them for hours in a small volume of space. Positrons have been accumulated in large numbers in similar traps, and low energy positron or positronium beams have been generated. Finally, steady progress has been made in trapping and cooling neutral atoms. Thus the ingredients to form antihydrogen at rest are at hand. Once antihydrogen atoms have been captured at low energy, spectroscopic methods can be applied to interrogate their atomic structure with extremely high precision and compare it to its normal matter counterpart, the hydrogen atom. Especially the 1S-2S transition, with a lifetime of the excited state of 122 msec and thereby a natural linewidth of 5 parts in 1016, offers in principle the possibility to directly compare matter and antimatter properties at a level of 1 part in 1018. (orig.)
Additional details
Publishing Information
- Journal Title
- Nuclear Physics. B, Proceedings Supplements
- Journal Volume
- 56
- Journal Issue
- A
- Journal Page Range
- p. 336-348.
- ISSN
- 0920-5632
- CODEN
- NPBSE7
Conference
- Title
- 4. biennial conference on low energy antiproton physics (LEAP-4).
- Dates
- 27-31 Aug 1996.
- Place
- Dinkelsbuehl (Germany).
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Netherlands
- INIS RN
- 28055899
- Subject category
- S74: ATOMIC AND MOLECULAR PHYSICS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ANTIPROTONS; ATOMIC BEAMS; ATOMS; COOLING; CPT THEOREM; HYDROGEN; PENNING EFFECT; POSITRON BEAMS; POSITRON COLLISIONS; POSITRONIUM; RESEARCH PROGRAMS; SPECTROSCOPY; TRAPPING
- Descriptors DEC
- ANTIBARYONS; ANTIMATTER; ANTINUCLEI; ANTINUCLEONS; ANTIPARTICLES; BARYONS; BEAMS; CATIONS; CHARGED PARTICLES; COLLISIONS; ELEMENTARY PARTICLES; ELEMENTS; FERMIONS; HADRONS; HYDROGEN IONS; HYDROGEN IONS 1 PLUS; INVARIANCE PRINCIPLES; IONS; LEPTON BEAMS; MATTER; NONMETALS; NUCLEI; NUCLEONS; PARTICLE BEAMS; PROTONS