Your browser doesn't support javascript.
loading
An experimental limit on the charge of antihydrogen.
Amole, C; Ashkezari, M D; Baquero-Ruiz, M; Bertsche, W; Butler, E; Capra, A; Cesar, C L; Charlton, M; Eriksson, S; Fajans, J; Friesen, T; Fujiwara, M C; Gill, D R; Gutierrez, A; Hangst, J S; Hardy, W N; Hayden, M E; Isaac, C A; Jonsell, S; Kurchaninov, L; Little, A; Madsen, N; McKenna, J T K; Menary, S; Napoli, S C; Nolan, P; Olchanski, K; Olin, A; Povilus, A; Pusa, P; Rasmussen, C Ø; Robicheaux, F; Sarid, E; Silveira, D M; So, C; Tharp, T D; Thompson, R I; van der Werf, D P; Vendeiro, Z; Wurtele, J S; Zhmoginov, A I; Charman, A E.
Afiliação
  • Amole C; Department of Physics and Astronomy, York University, Toronto, Ontario, Canada M3J 1P3.
  • Ashkezari MD; Department of Physics, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6.
  • Baquero-Ruiz M; Department of Physics, University of California at Berkeley, Berkeley, California 94720-7300, USA.
  • Bertsche W; 1] School of Physics and Astronomy, University of Manchester, Manchester M13 9PL, UK [2] The Cockcroft Institute, Daresbury Laboratory, Warrington WA4 4AD, UK.
  • Butler E; 1] Centre for Cold Matter, Imperial College, London SW7 2BW, UK [2] Physics Department, CERN, CH-1211 Geneva 23, Switzerland.
  • Capra A; Department of Physics and Astronomy, York University, Toronto, Ontario, Canada M3J 1P3.
  • Cesar CL; Instituto de Física, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-972, Brazil.
  • Charlton M; Department of Physics, College of Science, Swansea University, Swansea SA2 8PP, UK.
  • Eriksson S; Department of Physics, College of Science, Swansea University, Swansea SA2 8PP, UK.
  • Fajans J; 1] Department of Physics, University of California at Berkeley, Berkeley, California 94720-7300, USA [2] Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
  • Friesen T; Department of Physics and Astronomy, University of Calgary, Calgary, Alberta, Canada T2N 1N4.
  • Fujiwara MC; TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, Canada V6T 2A3.
  • Gill DR; TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, Canada V6T 2A3.
  • Gutierrez A; Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1.
  • Hangst JS; 1] Physics Department, CERN, CH-1211 Geneva 23, Switzerland [2] Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark.
  • Hardy WN; 1] Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1 [2] Canadian Institute of Advanced Research, Toronto, Ontario, Canada M5G 1ZA.
  • Hayden ME; Department of Physics, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6.
  • Isaac CA; Department of Physics, College of Science, Swansea University, Swansea SA2 8PP, UK.
  • Jonsell S; Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden.
  • Kurchaninov L; TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, Canada V6T 2A3.
  • Little A; Department of Physics, University of California at Berkeley, Berkeley, California 94720-7300, USA.
  • Madsen N; Department of Physics, College of Science, Swansea University, Swansea SA2 8PP, UK.
  • McKenna JT; Department of Physics, University of Liverpool, Liverpool L69 7ZE, UK.
  • Menary S; Department of Physics and Astronomy, York University, Toronto, Ontario, Canada M3J 1P3.
  • Napoli SC; Department of Physics, College of Science, Swansea University, Swansea SA2 8PP, UK.
  • Nolan P; Department of Physics, University of Liverpool, Liverpool L69 7ZE, UK.
  • Olchanski K; TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, Canada V6T 2A3.
  • Olin A; TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, Canada V6T 2A3.
  • Povilus A; Department of Physics, University of California at Berkeley, Berkeley, California 94720-7300, USA.
  • Pusa P; Department of Physics, University of Liverpool, Liverpool L69 7ZE, UK.
  • Rasmussen CØ; Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark.
  • Robicheaux F; Department of Physics, Purdue University, West Lafayette, Indiana 47907, USA.
  • Sarid E; Department of Physics, NRCN-Nuclear Research Center Negev, Beer Sheva IL-84190, Israel.
  • Silveira DM; Instituto de Física, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-972, Brazil.
  • So C; Department of Physics, University of California at Berkeley, Berkeley, California 94720-7300, USA.
  • Tharp TD; Department of Physics, University of California at Berkeley, Berkeley, California 94720-7300, USA.
  • Thompson RI; Department of Physics and Astronomy, University of Calgary, Calgary, Alberta, Canada T2N 1N4.
  • van der Werf DP; Department of Physics, College of Science, Swansea University, Swansea SA2 8PP, UK.
  • Vendeiro Z; Department of Physics, University of California at Berkeley, Berkeley, California 94720-7300, USA.
  • Wurtele JS; 1] Department of Physics, University of California at Berkeley, Berkeley, California 94720-7300, USA [2] Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
  • Zhmoginov AI; 1] Department of Physics, University of California at Berkeley, Berkeley, California 94720-7300, USA [2] Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
  • Charman AE; Department of Physics, University of California at Berkeley, Berkeley, California 94720-7300, USA.
Nat Commun ; 5: 3955, 2014 Jun 03.
Article em En | MEDLINE | ID: mdl-24892800
The properties of antihydrogen are expected to be identical to those of hydrogen, and any differences would constitute a profound challenge to the fundamental theories of physics. The most commonly discussed antiatom-based tests of these theories are searches for antihydrogen-hydrogen spectral differences (tests of CPT (charge-parity-time) invariance) or gravitational differences (tests of the weak equivalence principle). Here we, the ALPHA Collaboration, report a different and somewhat unusual test of CPT and of quantum anomaly cancellation. A retrospective analysis of the influence of electric fields on antihydrogen atoms released from the ALPHA trap finds a mean axial deflection of 4.1 ± 3.4 mm for an average axial electric field of 0.51 V mm(-1). Combined with extensive numerical modelling, this measurement leads to a bound on the charge Qe of antihydrogen of Q=(-1.3 ± 1.1 ± 0.4) × 10(-8). Here, e is the unit charge, and the errors are from statistics and systematic effects.
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Bases de dados: MEDLINE Idioma: En Revista: Nat Commun Assunto da revista: BIOLOGIA / CIENCIA Ano de publicação: 2014 Tipo de documento: Article
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Bases de dados: MEDLINE Idioma: En Revista: Nat Commun Assunto da revista: BIOLOGIA / CIENCIA Ano de publicação: 2014 Tipo de documento: Article