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2017 | 132 | 5 | 1443-1449
Article title

Positronium for Antihydrogen Production in the AEGIS Experiment

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Abstracts
EN
The primary goal of the Antihydrogen Experiment: Gravity, Interferometry, Spectroscopy (AEGIS) collaboration is to measure for the first time precisely the gravitational acceleration of antihydrogen, H̅, a fundamental issue of contemporary physics, using a beam of antiatoms. Indeed, although indirect arguments have been raised against a different acceleration of antimatter with respect to matter, nevertheless some attempts to formulate quantum theories of gravity, or to unify gravity with the other forces, consider the possibility of a non-identical gravitational interaction between matter and antimatter. We plan to generate H̅ through a charge-exchange reaction between excited Ps and antiprotons coming from the Antiproton Decelerator facility at CERN. It offers the advantage to produce sufficiently cold antihydrogen to make feasible a measurement of gravitational acceleration with reasonable uncertainty (of the order of a few percent). Since the cross-section of the above reaction increases with n⁴, n being the principal quantum number of Ps, it is essential to generate Ps in a highly excited (Rydberg) state. This will occur by means of two laser excitations of Ps emitted from a nanoporous silica target: a first UV laser (at 205 nm) will bring Ps from the ground to the n=3 state; a second laser pulse (tunable in the range 1650-1700 nm) will further excite Ps to the Rydberg state.
Keywords
Contributors
author
  • Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
  • INFN Milano, via Celoria 16, 20133, Milano, Italy
author
  • Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
  • INFN Milano, via Celoria 16, 20133, Milano, Italy
author
  • Stefan Meyer Institute for Subatomic Physics, Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Vienna, Austria
author
  • Department of Mechanical and Industrial Engineering, University of Brescia, via Branze 38, 25123 Brescia, Italy
  • INFN Pavia, via Bassi 6, 27100 Pavia, Italy
author
  • Department of Physics, University of Trento, via Sommarive 14, 38123 Povo, Trento, Italy
  • TIFPA/INFN Trento, via Sommarive 14, 38123 Povo, Trento, Italy
author
  • INFN Milano, via Celoria 16, 20133, Milano, Italy
  • Department of Science, University of Insubria, Via Valleggio 11, 22100 Como, Italy
author
  • Department of Physics, University of Genova, via Dodecaneso 33, 16146 Genova, Italy
  • INFN Genova, via Dodecaneso 33, 16146 Genova, Italy
  • Physics Department, CERN, 1211 Geneva 23, Switzerland
author
  • INFN Milano, via Celoria 16, 20133, Milano, Italy
  • Department of Physics, University of Milano, via Celoria 16, 20133 Milano, Italy
author
  • Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, 69117 Heidelberg, Germany
author
  • Laboratoire Aime Cotton, Université Paris-Sud, ENS Paris-Saclay, CNRS, Université Paris-Saclay,91405 Orsay Cedex, France
author
  • Kirchhoff-Institute for Physics, Heidelberg University, Im Neuenheimer Feld 227, 69120 Heidelberg, Germany
author
  • Department of Physics, University of Genova, via Dodecaneso 33, 16146 Genova, Italy
  • INFN Genova, via Dodecaneso 33, 16146 Genova, Italy
author
  • Physics Department, CERN, 1211 Geneva 23, Switzerland
author
  • Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
  • INFN Milano, via Celoria 16, 20133, Milano, Italy
author
  • Department of Physics, University of Genova, via Dodecaneso 33, 16146 Genova, Italy
  • INFN Genova, via Dodecaneso 33, 16146 Genova, Italy
  • Physics Department, CERN, 1211 Geneva 23, Switzerland
author
  • Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
  • INFN Milano, via Celoria 16, 20133, Milano, Italy
author
  • Physics Department, CERN, 1211 Geneva 23, Switzerland
author
  • INFN Pavia, via Bassi 6, 27100 Pavia, Italy
author
  • Physics Department, CERN, 1211 Geneva 23, Switzerland
author
  • INFN Milano, via Celoria 16, 20133, Milano, Italy
author
  • Stefan Meyer Institute for Subatomic Physics, Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Vienna, Austria
author
  • Department of Physics, University of Trento, via Sommarive 14, 38123 Povo, Trento, Italy
  • TIFPA/INFN Trento, via Sommarive 14, 38123 Povo, Trento, Italy
author
  • Physics Department, CERN, 1211 Geneva 23, Switzerland
  • Physics Department, CERN, 1211 Geneva 23, Switzerland
author
  • Department of Physics, University of Oslo, Sem Slandsvei 24, 0371 Oslo, Norway
  • Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, 69117 Heidelberg, Germany
author
  • Physics Department, CERN, 1211 Geneva 23, Switzerland
author
  • INFN Genova, via Dodecaneso 33, 16146 Genova, Italy
  • Department of Physics, University of Genova, via Dodecaneso 33, 16146 Genova, Italy
  • INFN Genova, via Dodecaneso 33, 16146 Genova, Italy
author
  • Institute of Nuclear Physics, CNRS/IN2p3, University of Lyon 1, 69622 Villeurbanne, France
author
  • Institute of Nuclear Physics, CNRS/IN2p3, University of Lyon 1, 69622 Villeurbanne, France
author
  • Stefan Meyer Institute for Subatomic Physics, Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Vienna, Austria
  • Physics Department, CERN, 1211 Geneva 23, Switzerland
author
  • INFN Padova, via Marzolo 8, 35131 Padova, Italy
author
  • Stefan Meyer Institute for Subatomic Physics, Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Vienna, Austria
author
  • Institute for Nuclear Research of the Russian Academy of Science, Moscow 117312, Russia
  • Joint Institute for Nuclear Research, 141980 Dubna, Russia
author
  • INFN Milano, via Celoria 16, 20133, Milano, Italy
  • Department of Physics, University of Milano, via Celoria 16, 20133 Milano, Italy
author
  • Kirchhoff-Institute for Physics, Heidelberg University, Im Neuenheimer Feld 227, 69120 Heidelberg, Germany
author
  • INFN Padova, via Marzolo 8, 35131 Padova, Italy
author
  • Institute of Nuclear Physics, CNRS/IN2p3, University of Lyon 1, 69622 Villeurbanne, France
author
  • Kirchhoff-Institute for Physics, Heidelberg University, Im Neuenheimer Feld 227, 69120 Heidelberg, Germany
author
  • Physics Department, CERN, 1211 Geneva 23, Switzerland
author
  • Department of Mechanical and Industrial Engineering, University of Brescia, via Branze 38, 25123 Brescia, Italy
  • INFN Pavia, via Bassi 6, 27100 Pavia, Italy
author
  • Department of Physics, University of Trento, via Sommarive 14, 38123 Povo, Trento, Italy
  • TIFPA/INFN Trento, via Sommarive 14, 38123 Povo, Trento, Italy
author
  • Czech Technical University, Prague, Brehov 7, 11519 Prague 1, Czech Republic
author
  • INFN Milano, via Celoria 16, 20133, Milano, Italy
author
  • University of Bologna, Viale Berti Pichat 6/2, 40126 Bologna, Italy
author
  • Department of Physics, University of Trento, via Sommarive 14, 38123 Povo, Trento, Italy
  • TIFPA/INFN Trento, via Sommarive 14, 38123 Povo, Trento, Italy
author
  • Physics Department, CERN, 1211 Geneva 23, Switzerland
author
  • Laboratoire Aime Cotton, Université Paris-Sud, ENS Paris-Saclay, CNRS, Université Paris-Saclay,91405 Orsay Cedex, France
author
  • Department of Physics, University of Oslo, Sem Slandsvei 24, 0371 Oslo, Norway
author
  • INFN Pavia, via Bassi 6, 27100 Pavia, Italy
  • Department of Physics, University of Pavia, via Bassi 6, 27100 Pavia, Italy
author
  • Department of Physics, University of Oslo, Sem Slandsvei 24, 0371 Oslo, Norway
author
  • INFN Milano, via Celoria 16, 20133, Milano, Italy
  • Department of Science, University of Insubria, Via Valleggio 11, 22100 Como, Italy
author
  • Physics Department, CERN, 1211 Geneva 23, Switzerland
  • The Research Council of Norway, P.O. Box 564, NO-1327 Lysaker, Norway
author
  • Department of Physics, University of Genova, via Dodecaneso 33, 16146 Genova, Italy
  • INFN Genova, via Dodecaneso 33, 16146 Genova, Italy
author
  • INFN Genova, via Dodecaneso 33, 16146 Genova, Italy
author
  • Physics Department, CERN, 1211 Geneva 23, Switzerland
author
  • Stefan Meyer Institute for Subatomic Physics, Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Vienna, Austria
author
  • Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, 69117 Heidelberg, Germany
author
  • Physics Department, CERN, 1211 Geneva 23, Switzerland
  • Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, 69117 Heidelberg, Germany
  • Department of Physics, Heidelberg University, Im Neuenheimer Feld 226, 69120 Heidelberg, Germany
author
  • Stefan Meyer Institute for Subatomic Physics, Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Vienna, Austria
author
  • INFN Pavia, via Bassi 6, 27100 Pavia, Italy
  • Department of Civil, Environmental, Architectural Engineering and Mathematics, University of Brescia, via Branze 43, 25123 Brescia, Italy
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv132n5p01kz
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