Authors
GB Andresen, MD Ashkezari, M Baquero-Ruiz, W Bertsche, Paul David Bowe, E Butler, CL Cesar, S Chapman, M Charlton, A Deller, S Eriksson, J Fajans, T Friesen, MC Fujiwara, DR Gill, A Gutierrez, Jeffrey S Hangst, WN Hardy, ME Hayden, AJ Humphries, R Hydomako, MJ Jenkins, Svante Jonsell, LV 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, DM Silveira, C So, JW Storey, RI Thompson, DP Van Der Werf, JS Wurtele, Y Yamazaki
Publication date
2010/12/2
Journal
Nature
Volume
468
Issue
7324
Pages
673
Publisher
Nature Publishing Group
Description
Antimatter was first predicted in 1931, by Dirac. Work with high-energy antiparticles is now commonplace, and anti-electrons are used regularly in the medical technique of positron emission tomography scanning. Antihydrogen, the bound state of an antiproton and a positron, has been produced, at low energies at CERN (the European Organization for Nuclear Research) since 2002. Antihydrogen is of interest for use in a precision test of nature’s fundamental symmetries. The charge conjugation/parity/time reversal (CPT) theorem, a crucial part of the foundation of the standard model of elementary particles and interactions, demands that hydrogen and antihydrogen have the same spectrum. Given the current experimental precision of measurements on the hydrogen atom (about two parts in 1014 for the frequency of the 1s-to-2s transition), subjecting antihydrogen to rigorous spectroscopic examination would …
Total citations
Scholar articles
GB Andresen, MD Ashkezari, M Baquero-Ruiz… - Nature, 2010