H
H.-J. Gerber
Researcher at University of Fribourg
Publications - 46
Citations - 724
H.-J. Gerber is an academic researcher from University of Fribourg. The author has contributed to research in topics: CP violation & Pion. The author has an hindex of 12, co-authored 46 publications receiving 716 citations.
Papers
More filters
Journal ArticleDOI
First direct observation of time-reversal non-invariance in the neutral-kaon system
A. Angelopoulos,A. Apostolakis,E. Aslanides,G. Backenstoss,P. Bargassa,O. Behnke,A. Benelli,V. Bertin,F. Blanc,P. Bloch,P. Carlson,Michael C. Carroll,E. Cawley,Stef. Charalambous,M.B. Chertok,Mats Danielsson,Marc Dejardin,J. Derre,A. Ealet,C. Eleftheriadis,L. Faravel,W. Fetscher,M. Fidecaro,Andrej Filipcic,D. Francis,J. R. Fry,E. Gabathuler,R. Gamet,H.-J. Gerber,A. Go,A. Haselden,P.J. Hayman,F. Henry-Couannier,R.W. Hollander,K. Jon-And,P.-R. Kettle,Panagiotis Kokkas,R. Kreuger,R. Le Gac,F. Leimgruber,Igor Mandić,Nikolaos Manthos,G. Marel,M. Mikuž,Jeffrey Boone Miller,F. Montanet,A. Muller,T. Nakada,B. Pagels,I. Papadopoulos,P. Pavlopoulos,A.J.P.L. Policarpo,G. Polivka,R. Rickenbach,B.L. Roberts,T. Ruf,Claudio Santoni,M. Schafer,Lukas A. Schaller,T. Schietinger,A. Schopper,L. Tauscher,C. Thibault,F. Touchard,C. Touramanis,C.W.E. van Eijk,Sotirios Vlachos,P. Weber,O. Wigger,Marcin Wladyslaw Wolter,Danilo Zavrtanik,D. Zimmerman +71 more
TL;DR: The first observation of time-reversal symmetry violation through a comparison of the probabilities of K 0 transforming into K0 and K 0 into K 0 as a function of the neutral-kaon eigentime t was reported in this article.
Journal ArticleDOI
Tests of CPT symmetry and quantum mechanics with experimental data from CPLEAR
R. Adler,Kerstin B. Jon-And,A. Liolios,J. Derre,Eef van Beveren,Dimitri V. Nanopoulos,Dimitri V. Nanopoulos,L. Sakeliou,R. Rickenbach,P. Fassnacht,P. Carlson,T. Geralis,T. Geralis,A. Schopper,Nikolaos Mavromatos,R. Gamet,Jorge L. Lopez,E. Machado,C.W.E. van Eijk,Ph. Schune,D. Francis,P. Weber,A. Apostolakis,T. Ruf,J. Pinto da Cunha,D. Garreta,João Carvalho,Michael C. Carroll,Marc Dejardin,M. Mikuz,M. Fidecaro,Igor Mandić,Ch Yèche,M. Schafer,Philippe Bloch,Danilo Zavrtanik,G. Chardin,Claude Guyot,R.W. Hollander,E. Aslanides,A. Ealet,O. Wigger,P.J. Hayman,G. Polivka,F. Leimgruber,John R. Fry,G. Marel,L.A. Schaller,Claudio Santoni,H.-J. Gerber,Nikolaos Manthos,Panagiotis Kokkas,R. Le Gac,F. Henry-Couannier,Ioannis Evangelou,A.J.P.L. Policarpo,A. Go,A. Go,R. Kreuger,L. Faravel,B. Pagels,E. Hubert,B. Eckart,Mats Danielsson,E. Gabathuler,A. Benelli,C. Thibault,R. Ferreira-Marques,Sotirios Vlachos,C. Touramanis,C. Kochowski,Jeffrey Boone Miller,V. Bertin,Christopher Bee,P. Pavlopoulos,B.L. Roberts,A. Soares,Frixos A Triantis,G. S. Varner,G. Backenstoss,A. Haselden,O. Behnke,A. Angelopoulos,F. Touchard,T. Nakada,P.-R. Kettle,Andrej Filipcic,M.B. Chertok,D. Zimmerman,L. Tauscher,T. Schietinger,I. Papadopoulos,A. Cody,F. Montanet,W. Fetscher,E. Cawley,P. Sanders,C. Eleftheriadis,John Ellis,C. Felder,F. Blanc,F. Blanc,Marcin Wladyslaw Wolter,Stef. Charalambous +103 more
TL;DR: In this paper, the authors used fits to recent published CPLEAR data on neutral kaon decays to π + π − and πeν to constrain the CPT-violation parameters appearing in a formulation of the neutral kon system as an open quantum-mechanical system.
Journal ArticleDOI
An EPR experiment testing the non-separability of the wave function
A. Apostolakis,Elie Aslanides,G. Backenstoss,P. Bargassa,O. Behnke,A. Benelli,V. Bertin,F. Blanc,F. Blanc,P. Bloch,Per Carlson,Michael C. Carroll,E. Cawley,G. Chardin,M.B. Chertok,A. Cody,Marc Dejardin,J. Derre,A. Ealet,C. Eleftheriadis,R. Ferreira-Marques,W. Fetscher,M. Fidecaro,Andrej Filipcic,D. Francis,J. R. Fry,E. Gabathuler,R. Gamet,H.-J. Gerber,A. Go,Claude Guyot,A. Haselden,P.J. Hayman,F. Henry-Couannier,R.W. Hollander,E. Hubert,K. Jon-And,P.-R. Kettle,C. Kochowski,Panagiotis Kokkas,R. Kreuger,R. Le Gac,F. Leimgruber,Igor Mandić,Nikolaos Manthos,G. Marel,M. Mikuž,Jeffrey Boone Miller,F. Montanet,A. Muller,T. Nakada,B. Pagels,I. Papadopoulos,P. Pavlopoulos,A.J.P.L. Policarpo,G. Polivka,R. Rickenbach,B.L. Roberts,T. Ruf,M. Schafer,Lukas A. Schaller,T. Schietinger,A. Schopper,Ph. Schune,L. Tauscher,C. Thibault,F. Touchard,C. Touramanis,C.W.E. van Eijk,Sotirios Vlachos,P. Weber,O. Wigger,Marcin Wladyslaw Wolter,Ch Yèche,Danilo Zavrtanik +74 more
TL;DR: In this paper, the EPR-type strangeness correlation in the K0 K 0 system produced in the reaction p p → K 0 K 0 at rest has been tested using the CPLEAR detector.
Journal ArticleDOI
Physics at CPLEAR
A. Angelopoulos,A. Apostolakis,E. Aslanides,G. Backenstoss,P. Bargassa,C.P. Bee,O. Behnke,A. Benelli,V. Bertin,F. Blanc,P. Bloch,Per Carlson,Michael C. Carroll,E. Cawley,M.B. Chertok,Mats Danielsson,Marc Dejardin,J. Derre,A. Ealet,C. Eleftheriadis,R. Ferreira-Marques,W. Fetscher,M. Fidecaro,Andrej Filipcic,D. Francis,J. R. Fry,E. Gabathuler,R. Gamet,H.-J. Gerber,A. Go,A. Haselden,P.J. Hayman,F. Henry-Couannier,R.W. Hollander,K. Jon-And,P.-R. Kettle,Panagiotis Kokkas,R. Kreuger,R. Le Gac,F. Leimgruber,Igor Mandić,Nikolaos Manthos,G. Marel,M. Mikuž,Jeffrey Boone Miller,F. Montanet,A. Muller,T. Nakada,B. Pagels,I. Papadopoulos,P. Pavlopoulos,A.J.P.L. Policarpo,G. Polivka,R. Rickenbach,B. L. Roberts,T. Ruf,L. Sakeliou,M. Schafer,Lukas A. Schaller,T. Schietinger,A. Schopper,L. Tauscher,C. Thibault,F. Touchard,C. Touramanis,C.W.E. van Eijk,Sotirios Vlachos,P. Weber,O. Wigger,Marcin Wladyslaw Wolter,Ch Yèche,Danilo Zavrtanik,D. Zimmerman +72 more
TL;DR: The CPLEAR experiment as discussed by the authors was devoted to the study of, and symmetries in the neutral-kaon system, and a variety of measurements allowed us to determine with high precision the parameters which describe the time evolution of the neutral kaons and their antiparticles, including decay amplitudes, and related symmetry properties.
Journal ArticleDOI
The CPLEAR detector at CERN
R. Adler,W. Albrecht,T. Alhalel,A. Angelopoulos,A. Apostolakis,E. Aslanides,G. Backenstoss,F. Bal,J.P. Bard,D. Barraca,Christopher Bee,O. Behnke,A. Benelli,J. Bennet,V. Bertin,F. Blanc,F. Blanc,P. Bloch,M. Bonnet,Ch. Bula,A. Calzas,Per Carlson,Michael C. Carroll,João Carvalho,E. Cawley,Stef. Charalambous,M. Chardalas,G. Chardin,P. Charra,M.B. Chertok,A. Cody,J. A. P. Da Silva,D. Damianoglou,R. Daniel,Mats Danielsson,P. Dechelette,M. Dedieu,Sp. Dedoussis,Marc Dejardin,J. Derre,A. Dijksman,B. Dinkespiller,M. Dodgson,M. Dröge,J. Duclos,N. Dudragne,Dominique Durand,A. Ealet,B. Eckart,C. Eleftheriadis,C. Engster,Ioannis Evangelou,L. Faravel,P. Fassnacht,Jean-Louis Faure,C. Felder,R. Ferreira-Marques,W. Fetscher,M. Fidecaro,Andrej Filipcic,D. Francis,J. R. Fry,Christer Fuglesang,E. Gabathuler,Y. Gally,R. Gamet,D. Garreta,D. Geiss,T. Geralis,H.-J. Gerber,A. Go,A. Go,P. Gumplinger,D. Guyon,Claude Guyot,P Harrison,P.F. Harrison,A. Haselden,P.J. Hayman,E. Hazen,F. Henry-Couannier,W.G. Heyes,R.W. Hollander,E. Hubert,C. Jacobs,K. Jansson,H.U. Johner,K. Jon-And,N. Karkour,Andras Kerek,J. Kern,G. Kesseler,P.-R. Kettle,D. King,T. Klados,C. Kochowski,Panagiotis Kokkas,K. Kontek,R. Kreuger,T. Lawry,D. Lecouturier,R. Le Gac,F. Leimgruber,D. Linget,A. Liolios,B. Lofstedt,F. Louis,E. Machado,P. Maley,U. Mall,Igor Mandić,Nikolaos Manthos,G. Marel,C.P. Marin,H. Martin,J.C. Michau,M. Mikuž,Jeffrey Boone Miller,F. Montanet,T. Nakada,F. Nanni,A. Onofre,B. Pagels,I. Papadopoulos,P. Pavlopoulos,F. Pelucchi,P. Petit,K. Philippoussis,J. Pinto da Cunha,A.J.P.L. Policarpo,G. Polivka,H. Postma,Ch. Rhême,R. Rickenbach,B.L. Roberts,E. Rozaki,T. Ruf,L. Sacks,L. Sakeliou,P. Sanders,Claudio Santoni,K. Sarigiannis,M. Schafer,Lukas A. Schaller,T. Schietinger,A. Schopper,Ph. Schune,A. Soares,M. Steinacher,S. Tatsis,L. Tauscher,C. Thibault,F. Touchard,C. Touramanis,Frixos A Triantis,D.A. Troster,I. Tsamouranis,H. Tschopp,P. Tsilimigras,E. van Beveren,C.W.E. van Eijk,B. van Koningsveld,J.P. Vanuxem,G. S. Varner,H. Verweij,Sotirios Vlachos,D. Warner,E. Watson,P. Weber,H. Wendler,O. Wigger,C. Witzig,Marcin Wladyslaw Wolter,Ch Yèche,Danilo Zavrtanik,D. Zimmerman +175 more
TL;DR: The CPLEAR detector at CERN was used for CP-, T- and CPT-symmetry studies using K 0 and K 0 produced by the annihilation of p's in a hydrogen gas target as mentioned in this paper.