학술논문
An improved limit on the charge of antihydrogen from stochastic acceleration.
Document Type
article
Author
Ahmadi, M; Baquero-Ruiz, M; Bertsche, W; Butler, E; Capra, A; Carruth, C; Cesar, CL; Charlton, M; Charman, AE; Eriksson, S; Evans, LT; Evetts, N; Fajans, J; Friesen, T; Fujiwara, MC; Gill, DR; Gutierrez, A; Hangst, JS; Hardy, WN; Hayden, ME; Isaac, CA; Ishida, A; Jones, SA; Jonsell, S; Kurchaninov, L; Madsen, N; Maxwell, D; McKenna, JTK; Menary, S; Michan, JM; Momose, T; Munich, JJ; Nolan, P; Olchanski, K; Olin, A; Povilus, A; Pusa, P; Rasmussen, CØ; Robicheaux, F; Sacramento, RL; Sameed, M; Sarid, E; Silveira, DM; So, C; Tharp, TD; Thompson, RI; van der Werf, DP; Wurtele, JS; Zhmoginov, AI
Source
Nature. 529(7586)
Subject
Language
Abstract
Antimatter continues to intrigue physicists because of its apparent absence in the observable Universe. Current theory requires that matter and antimatter appeared in equal quantities after the Big Bang, but the Standard Model of particle physics offers no quantitative explanation for the apparent disappearance of half the Universe. It has recently become possible to study trapped atoms of antihydrogen to search for possible, as yet unobserved, differences in the physical behaviour of matter and antimatter. Here we consider the charge neutrality of the antihydrogen atom. By applying stochastic acceleration to trapped antihydrogen atoms, we determine an experimental bound on the antihydrogen charge, Qe, of |Q|