Recent results on CP violation from the CPLEAR experiment

R. Adler,T. Alhalel,A. Angelopoulos,A. Apostolakis,E. Aslanides,G. Backenstoss,J.K. Bienlein,C.P. Bee,J. Bennet,V. Bertin,P. Bloch,Ch. Bula,G. Burgun,P. Carlson,J. Carvallho,E. Cawley,M. Chardalas,S. Charalambous,Mats Danielsson,S. Dedoussis,M. Dejardin,J. Derre,M. Dodgson,J.C. Dousse,J. Duclos,A. Ealet,B. Eckart,C. Eleftheriadis,I. Evangelou,L. Faravel,P. Fassnacht,J.L. Faure,C. Felder,R. Ferreira-Marques,W. Fetscher,M. Fidecaro,A. Filipcic,D. Francis,J. Fry,C. Fuglesang,E. Gabathuler,R. Gamet,D. Garreta,T. Geralis,H.J. Gerber,A. Go,P. Gumplinger,C. Guyot,P.F. Harrison,P.J. Hayman,William Graham Heyes,R.W. Hollander,H.U. Johner,K. Jon-And,K. Jansson,A. Kerek,J. Kern,P.R. Kettle,C. Kochowski,P. Kokkas,R. Kreuger,T. Lawry,R. Legac,A. Liolios,E. Machado,P. Maley,I. Mandic,N. Manthos,G. Marel,M. Mikuz,J. Miller,F. Montanet,T. Nakada,A. Onofre,B. Pagels,P. Pavlopoulos,F. Pelucchi,J. Pinto Da Cunha,A. Policarpo,G. Polivka,H. Postma,R. Rickenbach,R.L. Roberts,E. Rozaki,T. Ruf,L. Sacks,L. Sakeliou,P. Sanders,C. Santoni,K. Sarigannis,M. Schäfer,L. Schaller,A. Schopper,P. Schune,S. Szilagyi,L. Tauscher,C. Thibault,F. Touchard,C. Touramanis,F. Triantis,D.A. Troester,M. Van Den Putte,C.W.E. Van Eijk,G. Varner,S. Vlachos,P. Weber,O. Wigger,C. Witzig,M. Wolters,C. Yeche,D. Zavtranik,D. Zimmerman,The CPLEAR Collaboration; R. Adler; T. Alhalel; A. Angelopoulos; A. Apostolakis; E. Aslanides; G. Backenstoss; J.K. Bienlein; C.P. Bee; J. Bennet; V. Bertin; P. Bloch; Ch. Bula; G. Burgun; P. Carlson; J. Carvallho; E. Cawley; M. Chardalas; S. Charalambous; Mats Danielsson; S. Dedoussis; M. Dejardin; J. Derre; M. Dodgson; J.C. Dousse; J. Duclos; A. Ealet; B. Eckart; C. Eleftheriadis; I. Evangelou; L. Faravel; P. Fassnacht; J.L. Faure; C. Felder; R. Ferreira-Marques; W. Fetscher; M. Fidecaro; A. Filipcic; D. Francis; J. Fry; C. Fuglesang; E. Gabathuler; R. Gamet; D. Garreta; T. Geralis; H.J. Gerber; A. Go; P. Gumplinger; C. Guyot; P.F. Harrison; P.J. Hayman; William Graham Heyes; R.W. Hollander; H.U. Johner; K. Jon-And; K. Jansson; A. Kerek; J. Kern; P.R. Kettle; C. Kochowski; P. Kokkas; R. Kreuger; T. Lawry; R. Legac; A. Liolios; E. Machado; P. Maley; I. Mandic; N. Manthos; G. Marel; M. Mikuz; J. Miller; F. Montanet; T. Nakada; A. Onofre; B. Pagels; P. Pavlopoulos; F. Pelucchi; J. Pinto Da Cunha; A. Policarpo; G. Polivka; H. Postma; R. Rickenbach; R.L. Roberts; E. Rozaki; T. Ruf; L. Sacks; L. Sakeliou; P. Sanders; C. Santoni; K. Sarigannis; M. Schäfer; L. Schaller; A. Schopper; P. Schune; S. Szilagyi; L. Tauscher; C. Thibault; F. Touchard; C. Touramanis; F. Triantis; D.A. Troester; M. Van Den Putte; C.W.E. Van Eijk; G. Varner; S. Vlachos; P. Weber; O. Wigger; C. Witzig; M. Wolters; C. Yeche; D. Zavtranik; D. Zimmerman; The CPLEAR Collaboration

Recent results on CP violation from the CPLEAR experiment

R. Adler,T. Alhalel,A. Angelopoulos,A. Apostolakis,E. Aslanides,G. Backenstoss,J.K. Bienlein,C.P. Bee,J. Bennet,V. Bertin,P. Bloch,Ch. Bula,G. Burgun,P. Carlson,J. Carvallho,E. Cawley,M. Chardalas,S. Charalambous,Mats Danielsson,S. Dedoussis,M. Dejardin,J. Derre,M. Dodgson,J.C. Dousse,J. Duclos,A. Ealet,B. Eckart,C. Eleftheriadis,I. Evangelou,L. Faravel,P. Fassnacht,J.L. Faure,C. Felder,R. Ferreira-Marques,W. Fetscher,M. Fidecaro,A. Filipcic,D. Francis,J. Fry,C. Fuglesang,E. Gabathuler,R. Gamet,D. Garreta,T. Geralis,H.J. Gerber,A. Go,P. Gumplinger,C. Guyot,P.F. Harrison,P.J. Hayman,William Graham Heyes,R.W. Hollander,H.U. Johner,K. Jon-And,K. Jansson,A. Kerek,J. Kern,P.R. Kettle,C. Kochowski,P. Kokkas,R. Kreuger,T. Lawry,R. Legac,A. Liolios,E. Machado,P. Maley,I. Mandic,N. Manthos,G. Marel,M. Mikuz,J. Miller,F. Montanet,T. Nakada,A. Onofre,B. Pagels,P. Pavlopoulos,F. Pelucchi,J. Pinto Da Cunha,A. Policarpo,G. Polivka,H. Postma,R. Rickenbach,R.L. Roberts,E. Rozaki,T. Ruf,L. Sacks,L. Sakeliou,P. Sanders,C. Santoni,K. Sarigannis,M. Schäfer,L. Schaller,A. Schopper,P. Schune,S. Szilagyi,L. Tauscher,C. Thibault,F. Touchard,C. Touramanis,F. Triantis,D.A. Troester,M. Van Den Putte,C.W.E. Van Eijk,G. Varner,S. Vlachos,P. Weber,O. Wigger,C. Witzig,M. Wolters,C. Yeche,D. Zavtranik,D. Zimmerman,The CPLEAR Collaboration;R. Adler;T. Alhalel;A. Angelopoulos;A. Apostolakis;E. Aslanides;G. Backenstoss;J.K. Bienlein;C.P. Bee;J. Bennet;V. Bertin;P. Bloch;Ch. Bula;G. Burgun;P. Carlson;J. Carvallho;E. Cawley;M. Chardalas;S. Charalambous;Mats Danielsson;S. Dedoussis;M. Dejardin;J. Derre;M. Dodgson;J.C. Dousse;J. Duclos;A. Ealet;B. Eckart;C. Eleftheriadis;I. Evangelou;L. Faravel;P. Fassnacht;J.L. Faure;C. Felder;R. Ferreira-Marques;W. Fetscher;M. Fidecaro;A. Filipcic;D. Francis;J. Fry;C. Fuglesang;E. Gabathuler;R. Gamet;D. Garreta;T. Geralis;H.J. Gerber;A. Go;P. Gumplinger;C. Guyot;P.F. Harrison;P.J. Hayman;William Graham Heyes;R.W. Hollander;H.U. Johner;K. Jon-And;K. Jansson;A. Kerek;J. Kern;P.R. Kettle;C. Kochowski;P. Kokkas;R. Kreuger;T. Lawry;R. Legac;A. Liolios;E. Machado;P. Maley;I. Mandic;N. Manthos;G. Marel;M. Mikuz;J. Miller;F. Montanet;T. Nakada;A. Onofre;B. Pagels;P. Pavlopoulos;F. Pelucchi;J. Pinto Da Cunha;A. Policarpo;G. Polivka;H. Postma;R. Rickenbach;R.L. Roberts;E. Rozaki;T. Ruf;L. Sacks;L. Sakeliou;P. Sanders;C. Santoni;K. Sarigannis;M. Schäfer;L. Schaller;A. Schopper;P. Schune;S. Szilagyi;L. Tauscher;C. Thibault;F. Touchard;C. Touramanis;F. Triantis;D.A. Troester;M. Van Den Putte;C.W.E. Van Eijk;G. Varner;S. Vlachos;P. Weber;O. Wigger;C. Witzig;M. Wolters;C. Yeche;D. Zavtranik;D. Zimmerman;The CPLEAR Collaboration;

nuclear physics b - proceedings supplements 1993 Vol. 31 pp. 196-199

186

collaboration1993nuclearrecent

Abstract

The CPLEAR experiment is aiming at precise CP violation tests using initially pure K0- andK0 beams from the intense source provided by the annihilation of the LEAR p-beam in hydrogen. The strangeness tagging efficiency and the systematic errors have been studied and found to be in agreement with the design specifications. The measurement of the differential time asymmetry of the π+π− decays allowed the direct observation of differences in the decay rates of particles and antiparticles. The CP violating parameters were determined as |ν±| = (2.32 ± 0.14) · 10−3 and ψ± = 42.3° ± 4.4°. First results in the reconstruction and analysis of the neutral kaon decays into two neutral pions and the Ke3 decay are presented.

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recent results cp violation cplear experiment results on cp

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