Probing antimatter gravity – The AEGIS experiment at CERN
- Kellerbauer, A.
- Aghion, S.
- Amsler, C.
- Ariga, A.
- Ariga, T.
- Bonomi, G.
- Bräunig, P.
- Bremer, J.
- Brusa, S.
- Cabaret, L.
- Caccia, M.
- Caravita, R.
- Castelli, F.
- Cerchiari, G.
- Chlouba, K.
- Cialdi, S.
- Comparat, D.
- Consolati, G.
- Demetrio, A.
- Di Noto, L.
- Doser, M.
- Dudarev, A.
- Ereditato, A.
- Evans, C.
- Ferragut, R.
- Fesel, J.
- Fontana, A.
- Gerber, S.
- Giammarchi, M.
- Gligorova, A.
- Guatieri, F.
- Haider, S.
- Holmestad, H.
- Huse, T.
- Jordan, E.
- Kimura, M.
- Koettig, T.
- Krasnický, D.
- Lagomarsino, V.
- Lansonneur, P.
- Lebrun, P.
- Lehner, S.
- Liberadzka, J.
- Malbrunot, C.
- Mariazzi, S.
- Matveev, V.
- Mazzotta, Z.
- Nebbia, G.
- Nédélec, P.
- Oberthaler, M.
- Pacifico, N.
- Pagano, D.
- Penasa, L.
- Petráček, V.
- Pistillo, C.
- Prelz, F.
- Prevedelli, M.
- Ravelli, L.
- Rienäcker, B.
- Røhne, M.
- Rotondi, A.
- Sacerdoti, M.
- Sandaker, H.
- Santoro, R.
- Scampoli, P.
- Smestad, L.
- Sorrentino, F.
- Špaček, M.
- Storey, J.
- Strojek, I.
- Testera, G.
- Tietje, I.
- Widmann, E.
- Yzombard, P.
- Zavatarelli, S.
- Zmeskal, J.
- Zurlo, N.
DOIAbstract
International audienceThe weak equivalence principle states that the motion of a body in a gravitational field is independent of its structure or composition. This postulate of general relativity has been tested to very high precision with ordinary matter, but no relevant experimental verification with antimatter has ever been carried out. The AEGIS experiment will measure the gravitational acceleration of antihydrogen to ultimately 1% precision. For this purpose, a pulsed horizontal antihydrogen beam with a velocity of several 100 m s−1 will be produced. Its vertical deflection due to gravity will be detected by a setup consisting of material gratings coupled with a position-sensitive detector, operating as a moiré deflectometer or an atom...
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