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Featured researches published by R. Adler.

Physics Letters B | 1995

Tests of CPT symmetry and quantum mechanics with experimental data from CPLEAR

R. Adler; K. Jon-And; A. Liolios; J. Derre; Eef van Beveren; Dimitri V. Nanopoulos; L. Sakeliou; R. Rickenbach; P. Fassnacht; P. Carlson; Theo Geralis; A. Schopper; R. Gamet; Jorge L. Lopez; E. Machado; C.W.E. van Eijk; Philippe Schune; D. Francis; P. Weber; A. Apostolakis; T. Ruf; J. Pinto da Cunha; D. Garreta; J. Carvalho; M. Carroll; Marc Dejardin; M. Mikuz; M. Fidecaro; I. Mandić; Ch. Yèche

Abstract We use 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 kaon system as an open quantum-mechanical system. The obtained upper limits of the CPT-violation parameters are approaching the range suggested by certain ideas concerning quantum gravity.

Physics Letters B | 1996

Evaluation of the phase of the CP violation parameter η+− and the KL - KS mass difference from a correlation analysis of different experiments

R. Adler; A. Angelopoulos; A. Apostolakis; E. Aslanides; G. Backenstoss; C.P. Bee; O. Behnke; A. Benelli; V. Bertin; F. Blanc; P. Bloch; P. Carlson; M. Carroll; J. Carvalho; E. Cawley; S. Charalambous; G. Chardin; M.B. Chertok; A. Cody; M. Danielsson; Marc Dejardin; J. Derre; A. Ealet; B. Eckart; C. Eleftheriadis; I. Evangelou; L. Faravel; P. Fassnacht; C. Felder; R. Ferreira-Marques

Abstract The best estimation of ϕ +− (the phase of the CP violation parameter η +− ) and of Δm (the K L - K S mass difference) is obtained by averaging the results of different experiments, taking into account the different correlation, existing for most of the experiments, between the measurement of ϕ +− and Δm . Including the recent measurements, we obtain the average values 〈Δm〉 = (530.7 ± 1.3) × 10 7 ħ/s and 〈 ϕ +− 〉 = 43.82° ± 0.63°. This value of ϕ +− is in good agreement with the superweak phase ϕ SW = 43.49° ± 0.08°.

Physics Letters B | 1997

CPLEAR results on the CP parameters of neutral kaons decaying to π+π−π0

R. Adler; A. Angelopoulos; A. Apostolakis; E. Aslanides; G. Backenstoss; P. Bargassa; C. P. Bee; O. Behnke; A. Benelli; V. Bertin; F. Blanc; P. Bloch; P. Carlson; M. Carroll; J. Carvalho; E. Cawley; S. Charalambous; G. Chardin; M.B. Chertok; A. Cody; M. Danielsson; Marc Dejardin; J. Derre; A. Ealet; B. Eckart; C. Eleftheriadis; I. Evangelou; L. Faravel; P. Fassnacht; C. Felder

The CPLEAR experiment measured time-dependent decay-rate asymmetries of \PKz\ and \PaKz\ decaying to \pipmz\ in order to study the interference between the decay amplitudes of \PKzS\ --- either CP-violating or CP-conserving --- and the CP-conserving \PKzL\ decay amplitude. From the analysis of the complete data set we find for the CP-violating parameter \etapmz , % %

Physics Letters B | 1997

Experimental measurement of the KSKSKSKL ratio in antiproton annihilations at rest in gaseous hydrogen at 15 and 27 bar

R. Adler; T. Alhalel; A. Angelopoulos; A. Apostolakis; E. Aslanides; G. Backenstoss; P. Bargassa; C. P. Bee; O. Behnke; A. Benelli; V. Bertin; F. Blanc; P. Bloch; P. Carlson; M. Carroll; J. Carvalho; E. Cawley; S. Charalambous; G. Chardin; M.B. Chertok; A. Cody; M. Danielsson; Marc Dejardin; J. Derre; A. Ealet; B. Eckart; C. Eleftheriadis; I. Evangelou; L. Faravel; P. Fassnacht

\reeta = \left( -2 \pm 7 \mbox{\rm \ stat.\ } ^{+4}_{-1} \mbox{\rm \ syst.} \right) \times 10^{-3} ,

Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1997

The CPLEAR Electromagnetic Calorimeter

R. Adler; G. Backenstoss; F. Bal; O. Behnke; P. Bloch; D. Damianoglou; P. Dechelette; M. Dröge; B. Eckart; C. Felder; W. Fetscher; M. Fidecaro; D. Garreta; H.-J. Gerber; P. Gumplinger; D. Guyon; H.U. Johner; B. Lofstedt; J. Kern; P. Kokkas; H. Krause; U. Mall; C.P. Marin; F. Nanni; B. Pagels; P. Pavlopoulos; P. Petit; G. Polivka; Ch. Rhême; T. Ruf

Biennial Conference on Low Energy Antiproton Physics 4 | 1997

Results of CPLEAR

\imeta = \left( -2 \pm 9 \mbox{\rm \ stat.\ } ^{+2}_{-1} \mbox{\rm \ syst.} \right) \times 10^{-3}

Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1992

Design and test of a prototype gas-sampling electromagnetic calorimeter of high granularity for the CPLEAR experiment

R. Adler; G. Backenstoss; P. Bloch; D. Damianoglou; P. Dechelette; M. Dröge; C. Felder; W. Fetscher; M. Fidecaro; D. Garreta; H.-J. Gerber; P. Gumplinger; H.U. Johner; J. Kern; P. Kokkas; U. Mall; F. Nanni; C. Witzig

% % and for the CP-conserving parameter \lampmz , % %

Nuclear Physics | 1999

Contribution of CPLEAR to the physics of the neutral-kaon system

P. Pavlopoulos; K. Jon-And; A. Liolios; J. Derre; Eef van Beveren; L. Sakeliou; R. Rickenbach; P. Fassnacht; P. Carlson; Marc Dejardin; A. Schopper; R. Gamet; E. Machado; T. Alhalel; R. Ferreira-marques; Philippe Schune; D. Francis; P. Weber; A. Apostolakis; T. Ruf; J. Pinto da Cunha; D. Garreta; S. Charalambous; J. Carvalho; M. Carroll; M. Mikuz; R. Adler; M. Fidecaro; I. Mandić; Ch. Yèche

\relam = \left(+28 \pm 7 \mbox{\rm \ stat.\ } \pm 3 \mbox{\rm \ syst.} \right) \times 10^{-3} ,

Flavour physics KEK Topical Conference on Flavour Physics 4 | 1997