AEg̅IS latest results

F. Guatieri; S. Aghion; C. Amsler; G. Angela; G. Bonomi; R.S. Brusa; M. Caccia; R. Caravita; F. Castelli; G. Cerchiari; D. Comparat; G. Consolati; A. Demetrio; L. Di Noto; M. Doser; C. Evans; M. Fanì; R. Ferragut; J. Fesel; A. Fontana; S. Gerber; M. Giammarchi; A. Gligorova; S. Haider; A. Hinterberger; H. Holmestad; A. Kellerbauer; D. Krasnický; V. Lagomarsino; P. Lansonneur; P. Lebrun; C. Malbrunot; S. Mariazzi; V. Matveev; Z. Mazzotta; S.R. Müller; G. Nebbia; P. Nedelec; M. Oberthaler; N. Pacifico; D. Pagano; L. Penasa; V. Petracek; F. Prelz; M. Prevedelli; B. Rienaecker; J. Robert; O.M. Rhne.; A. Rotondi; M. Sacerdoti; H. Sandaker; R. Santoro; M. Simon; L. Smestad; F. Sorrentino; G. Testera; I.C. Tietje; E. Widmann; P. Yzombard; C. Zimmer; J. Zmeskal; N. Zurlo

doi:10.1051/epjconf/201718101037

All issues

Volume 181 (2018)

EPJ Web of Conferences, 181 (2018) 01037

Abstract

Open Access

Issue		EPJ Web of Conferences Volume 181, 2018 International Conference on Exotic Atoms and Related Topics - EXA2017


Article Number		01037
Number of page(s)		7
DOI		https://doi.org/10.1051/epjconf/201718101037
Published online		18 September 2018

EPJ Web of Conferences 181, 01037 (2018)
https://doi.org/10.1051/epjconf/201718101037

AEg̅IS latest results

F. Guatieri¹^,2, S. Aghion³^,5, C. Amsler⁶, G. Angela⁵, G. Bonomi⁷^,8, R.S. Brusa¹^,2, M. Caccia⁴^,9, R. Caravita¹⁰^,11, F. Castelli⁴^,13, G. Cerchiari¹⁴, D. Comparat¹⁵, G. Consolati³^,4, A. Demetrio¹⁶, L. Di Noto¹⁰^,11, M. Doser¹², C. Evans³^,4, M. Fanì¹⁰^,11^,12, R. Ferragut³^,4, J. Fesel¹², A. Fontana⁸, S. Gerber¹², M. Giammarchi⁴, A. Gligorova¹⁷, S. Haider¹², A. Hinterberger¹², H. Holmestad¹⁹, A. Kellerbauer¹⁴, D. Krasnický¹⁰^,11, V. Lagomarsino¹⁰^,11, P. Lansonneur²⁰, P. Lebrun²⁰, C. Malbrunot¹²^,6, S. Mariazzi²³, V. Matveev²¹^,22, Z. Mazzotta⁴^,13, S.R. Müller¹⁶, G. Nebbia²³, P. Nedelec²⁰, M. Oberthaler¹⁶, N. Pacifico¹⁷, D. Pagano⁷^,8, L. Penasa¹^,2, V. Petracek¹⁸, F. Prelz⁴, M. Prevedelli²⁴, B. Rienaecker¹², J. Robert¹⁵, O.M. Rhne.¹⁹, A. Rotondi⁸^,25, M. Sacerdoti⁴^,13, H. Sandaker¹⁹, R. Santoro⁴^,9, M. Simon⁶, L. Smestad¹²^,27, F. Sorrentino¹⁰^,11, G. Testera¹¹, I.C. Tietje¹², E. Widmann⁶, P. Yzombard¹⁴, C. Zimmer¹²^,14^,16, J. Zmeskal⁶ and N. Zurlo⁸^,28

¹ Department of Physics, University of Trento
² TIFPA/INFN Trento
³ Politecnico of Milano
⁴ Istituto Nazionale di Fisica Nucleare, Sezione di Milano
⁵ Laboratory for High Energy Physics, Albert Einstein Center for Fundamental Physics, University of Bern
⁶ Stefan Meyer Institute for Subatomic Physics, Austrian Academy of Sciences
⁷ Department of Mechanical and Industrial Engineering, University of Brescia
⁸ INFN Pavia
⁹ Department of Science, University of Insubria
¹⁰ Department of Physics, University of Genova
¹¹ INFN Genova
¹² Physics Department, CERN
¹³ Department of Physics, Università degli Studi di Milano
¹⁴ Max Planck Institute for Nuclear Physics
¹⁵ Laboratoire Aimé Cotton, Université Paris-Sud, ENS Cachan, CNRS
¹⁶ Kirchhoff-Institute for Physics, Heidelberg University
¹⁷ Institute of Physics and Technology, University of Bergen
¹⁸ Czech Technical University, Prague
¹⁹ Department of Physics, University of Oslo
²⁰ Institute of Nuclear Physics, CNRS/IN2p3
²¹ Institute for Nuclear Research of the Russian Academy of Science, Moscow
²² Joint Institute for Nuclear Research, Dubna
²³ INFN Padova
²⁴ University of Bologna
²⁵ Department of Physics, University of Pavia
²⁶ Department of Physics “Ettore Pancini” University of Napoli Federico II
²⁷ The Research Council of Norway
²⁸ Department of Civil Engineering, University of Brescia

Published online: 18 September 2018

Abstract

The validity of the Weak Equivalence Principle (WEP) as predicted by General Relativity has been tested up to astounding precision using ordinary matter. The lack hitherto of a stable source of a probe being at the same time electrically neutral, cold and stable enough to be measured has prevented highaccuracy testing of the WEP on anti-matter. The AEg̅IS (Antimatter Experiment: Gravity, Interferometry, Spectroscopy) experiment located at CERN's AD (Antiproton Decelerator) facility aims at producing such a probe in the form of a pulsed beam of cold anti-hydrogen, and at measuring by means of a moiré deflectometer the gravitational force that Earth's mass exerts on it. Low temperature and abundance of the H̅ are paramount to attain a high precision measurement. A technique employing a charge-exchange reaction between antiprotons coming from the AD and excited positronium atoms is being developed at AEg̅IS and will be presented hereafter, alongside an overview of the experimental apparatus and the current status of the experiment

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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