Trapped antihydrogen

G. B. Andresen, M. D. Ashkezari, M. Baquero-Ruiz, W. Bertsche, P. D. Bowe, E. Butler, C. L. Cesar, S. Chapman, M. Charlton, A. Deller, S. Eriksson, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, A. Gutierrez, J. S. Hangst (), W. N. Hardy, M. E. Hayden, A. J. Humphries, R. Hydomako, M. J. Jenkins, S. Jonsell, L. V. Jørgensen, L. Kurchaninov, N. Madsen, S. Menary, P. Nolan, K. Olchanski, A. Olin, A. Povilus, P. Pusa, F. Robicheaux, E. Sarid, S. Seif el Nasr, D. M. Silveira, C. So, J. W. Storey, R. I. Thompson, D. P. van der Werf, J. S. Wurtele and Y. Yamazaki
Additional contact information
G. B. Andresen: Aarhus University
M. D. Ashkezari: Simon Fraser University
M. Baquero-Ruiz: University of California
W. Bertsche: Swansea University
P. D. Bowe: Aarhus University
E. Butler: Swansea University
C. L. Cesar: Instituto de Fısica, Universidade Federal do Rio de Janeiro
S. Chapman: University of California
M. Charlton: Swansea University
A. Deller: Swansea University
S. Eriksson: Swansea University
J. Fajans: University of California
T. Friesen: University of Calgary
M. C. Fujiwara: University of Calgary
D. R. Gill: TRIUMF, 4004 Wesbrook Mall
A. Gutierrez: University of British Columbia
J. S. Hangst: Aarhus University
W. N. Hardy: University of British Columbia
M. E. Hayden: Simon Fraser University
A. J. Humphries: Swansea University
R. Hydomako: University of Calgary
M. J. Jenkins: Swansea University
S. Jonsell: Fysikum, Stockholm University
L. V. Jørgensen: Swansea University
L. Kurchaninov: TRIUMF, 4004 Wesbrook Mall
N. Madsen: Swansea University
S. Menary: York University
P. Nolan: University of Liverpool
K. Olchanski: TRIUMF, 4004 Wesbrook Mall
A. Olin: TRIUMF, 4004 Wesbrook Mall
A. Povilus: University of California
P. Pusa: University of Liverpool
F. Robicheaux: Auburn University
E. Sarid: Nuclear Research Center NEGEV
S. Seif el Nasr: University of British Columbia
D. M. Silveira: Atomic Physics Laboratory, RIKEN
C. So: University of California
J. W. Storey: TRIUMF, 4004 Wesbrook Mall
R. I. Thompson: University of Calgary
D. P. van der Werf: Swansea University
J. S. Wurtele: University of California
Y. Yamazaki: Atomic Physics Laboratory, RIKEN

Nature, 2010, vol. 468, issue 7324, 673-676

Abstract: First antihydrogen atoms in captivity Antihydrogen, the bound state of an antiproton and a positron, has been produced at low energies since 2002 at CERN, Europe's particle-physics lab near Geneva, Switzerland. Antihydrogen is of fundamental interest for testing the standard model of elementary particles and interactions. However, experiments to date have produced antihydrogen that is not confined, precluding detailed study of its structure. Now the trapping and controlled release of atoms of antihydrogen has been achieved, paving the way for precision measurements on anti-atoms. In this historic experiment, an interaction between about 107 antiprotons and 7 × 108 positrons generated an observed 38 annihilation events corresponding to 38 atoms of antihydrogen briefly confined in ultra-cold superconducting traps.

Date: 2010
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DOI: 10.1038/nature09610

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