Measurement of the B0 d - B̄0 d oscillation frequency
Maurizio Acciarri,Oscar S. Adriáni,M. Aguilar-Benítez,Steven P. Ahlen,Juan Alcaraz,G. Alemanni,Jim V. Allaby,Alberto Aloisio,M. G. Alviggi,Giovanni Ambrosi,Hans B. Anderhub,V. P. Andreev,Tatiana Angelescu,F. Anselmo,A. S. Arefiev,Tofigh Azemoon,T. Aziz,Paolo Bagnaia,László A. Baksay,Robert C. Ball,Sw W. Banerjee,Károly Banicz,Artur Barczyk,R. Barillère,Luciano M. Barone,Paolo Bartalini,Andrea Baschirotto,Maurizio Basile,Roberto Battiston,Aurelio Bay,Francesco Becattini,Ulrich J. Becker,F. Behner,J. Berdugo,P. Berges,Bruna Bertucci,Botio L. Betev,Satyaki R. Bhattacharya,Maurizio Biasini,Adrian Biland,Gian Mario Bilei,Romano Bizzarri,JJ J. Blaising,S. C. Blyth,GJ J. Bobbink,Rudolf K. Böck,Albrecht Böhm,László Boldizsár,Bruno Borgia,Dimitri Bourilkov,Maurice H. Bourquin, D. Boutigny,Stefano Braccini,James G. Branson,Vuko Brigljević,Ian C. Brock,A. Buffini,A. Buijs,Joseph D. Bürger,William J. Burger,Jerome K. Busenitz,Xu Cai,Mario Campanelli,Michael Capell,G. Cara Romeo,Gianpaolo P. Carlino,Annamaria M. Cartacci,Jorge Casaus,Guido Castellini,Francesca Cavallari,Nicola Cavallo,Claudia Cecchi, M. Cerrada,F. Cesaroni,M. Chamizo Chamizo,Yun Chang,U. K. Chaturvedi,S. V. Chekanov,M. Chemarin,Augustine E. Chen,Guomeng Chen,Guoming Chen,Hui Chen,Hesheng Chen,M. L. Chen,G. V. Chiefari,ChihYung Chien,Luisa Cifarelli,Federico Cindolo,Carlo Civinini,I. Clare,Robert M. Clare,Hans O. Cohn,Guy G. Coignet,Auke Pieter Colijn, N. Colino,Silvia Costantini,F. Cotorobai,Begoña De La Cruz,Ákos Csilling,Tiesheng Dai,Raffaello D'Alessandro,Riccardo De Asmundis,A. Degré, K. Deiters,Peter Denes,Francesco De Notaristefani,Daryl D. DiBitonto,Marcella Diemoz,D. van Dierendonck,Francesca Di Lodovico,Carla Dionisi,Michael Dittmar,Aaron Domínguez,Alessandra Doria,María Teresa Dova,E. Drago,Dominique Duchesneau,Pieter Duinker,Ignacio Durán,Suchandra Dütta,Sajan Easo,Yu V. Efremenko,Houmani El Mamouni,Arnold Engler,FJ J. Eppling,F. C. Erné,Jean Pierre Ernenwein,P. Extermann,M. Fabre,Riccardo Faccini,Speranza Falciano,A. Favara, J. Fay,Oleg L. Fedin,Marta Felcini,B. Fenyi,T. Ferguson,Fernando Ferroni,Harm S. Fesefeldt,Emanuele Fiandrini,John H. Field,Frank Filthaut,PH H. Fisher,Ian M. Fisk,G. Forconì,L. Fredj,Kai Freüdenreich,Claudio Furetta,Yu U. Galaktionov,Som N. Ganguli,Pablo García-Abia,S. S. Gau,Simonetta Gentile,J. Gerald,N. Gheordanescu,Stefano Giagu,Steven Goldfarb,J. Goldstein,Zhufang Gong,A. K. Gougas,Giorgio Gratta,M. W. Gruenewald,VK K. Gupta,Atul Gurtu,LJ J. Gutay,Daniel Haas,B. Hartmann,Asma T. Hasan,Despoina Hatzifotiadou,Thomas Hebbeker,Alain E. Hervé,J. Hirschfelder,W. C. van Hoek,Hans Hofer,Haffez R. Hoorani,Suen Hou,G. Q. Hu,Vincenzo Innocente,K. Jenkes,Bingnian Jin,Lawrence W. Jones,Paul De Jong,I. Josa-Mutuberría,A. Kasser,R. A. Khan,D. Kamrad,Yu A. Kamyshkov,Jon S. Kapustinsky,Yannis Karyotakis,Maninder Pal Kaur,Maria Novella Kienzle-Focacci,Dehee Kim,D. H. Kim,JinKyung Kim,Seungchul Kim,Wayne Wayne Kinnison,A. G. Kirkby,David Kirkby,Jasper Kirkby,D. D. Kiss,Wolfram K. Kittel,Alexei Klimentov,Adriaan C. König,Andreas K. Kopp,Ivan E. Korolko,Vladimir Koutsenko,Robert W. Kraemer,W. Krenz,A. V. Kunin,P. Lacenter,P. Ladrón De Guevara,Gregorio Landi,C. Lapoint,Kati Lassila-Perini,Petri K. Laurikainen,A. Lavorato,Michel Lebeau,Alexei I. Lebedev,Paul L G Lebrun,Pierre Lecomte,Paul R. Lecoq,Pierre Le Coultre,Hoojeong Lee,Charles Leggett,Jean Marc Le Goff,R. Leiste,Emanuele Leonardi,Peter M. Levtchenko,Ch Li,C. H. Lin,Weiting Lin,Luca Lísta,Zhen'An Liu,Wolfgang Lohmann,Egidio Longo,Wei Lu,Yusheng Lü,K. Löbelsmeyer,Claudio Luci,David Luckey,Lamberto Luminari,Werner Lüstermann,Wengan Ma,Manas Maity,G. Majumder,Luca Malgeri,A. Malinin,C. Mañá,Dominique J J Mangeol,S. Mangla,P. A. Marchesini,Alexandru A. Marín,J. P. Martin,Frank Silvio Marzano,Graziano G G Massaro,D. McNally,Salvatore Mele,Leonardo Merola, M. Meschini,WJ J. Metzger,M. Von Der Mey,Y. Mi,D. Migani,A. C. Mihul,A. J W van Mil,H. Milcent,Giovanni Mirabelli,Joachim Mnich,Péter Molnár,Bianca Monteleoni,Rebecca W. Moore,Tania K. Moulik,Richard P. Mount,Franz Muheim,A. J M Muijs,Steve Nahn,M. Napolitano,Francesca Nessi-Tedaldi,Harvey B. Newman,T. Niessen,Alex Nippe,Aleandro Nisati,Hannelies Nowak,YD Oh,H. Opitz,Giovanni C. Organtini,R. Ostonen,S. Palit,Carmen Palomares,D. Pandoulas,Simone Paoletti,Pierluigi S. Paolucci,Heekyeong Park, Park,G. Pascale,Giovanni Passaleva, S. Patricelli,Thomas C. Paul,M. Pauluzzi,Christoph Paus,Felicitas Paüss,D. Peach,YJ Pei,Simonetta Pensotti,Denis Perret-Gallix,Brian Aagaard Petersen,S. Petrak,Aihud Pevsner,Davide Piccolo,Marco Pieri,PA A. Piroué,E. Pistolesi,Vassili V. Plyaskin,Martin Pohl,Hans Postema,Nicolas Produit,D. A. Prokofiev,J. Quartieri,Ghita Rahal-Callot,N. Raja, Rancoita,M. Rattaggi, Raven,Panos A. Razis,Kenneth Francis Read,Daning Ren,Marco Rescigno,Stephen Reucroft,Tasja van Rhee,Sabine Riemann,Keith Riles,O. Rind,A. Robohm,Jonathan P. Rodin,Byron P. Roe,Luciano Romero,Sylvie Rosier-Lees,Ph Rosselet,W. van Rossum,Simon Roth,J. Alberto Rubio,D. Ruschmeier,Hans Rykaczewski,J. M. Salicio,Eusebio Sánchez,Marijn P A Sanders,Miltiadis E. Sarakinos,Subir Sarkar,Gérard Sauvage,Christoph Schäfer,V. A. Schegelsky,S. Schmidt-Kaerst,David W. Schmitz,Marc A. Schneegans,N. Scholz,Herwig F. Schopper,DJ J. Schotanus,J. Schwenke, G. Schwering,C. Sciacca,D. Sciarrino,Leonello Servoli,S. Shevchenko,Naiden Shivarov,V. Shoutko,J. Shukla,E. Shumilov,A. V. Shvorob,Th Siedenburg,Dongchul Son,V. Soulimov,Bryan R. Smith,Piero Spillantini,Malcolm F. Steuer,David P. Stickland,Howard Stone,Basil J. Stoyanov,Arno Straessner, K. Sudhakar,G. G. Sultanov,La-Zhen Sun,G. F. Susinno,Henry Suter,John D. Swain,Xiaowei Tang,Ludwig Tauscher,Lucas L. Taylor,Samuel C C Ting,Steve Ting,Suresh C. Tonwar,József J. Tóth,Christopher G. Tully,H. Tuchscherer, Karen Tung,Yoshi Uchida,Jürgen Ulbricht,Ulrich Uwer,Enzo Valente,Gy Vesztergombi,I. Vetlitsky,Gert M. Viertel,M. Vivargent,Sotirios Vlachos,R. Völkert,Helmut R. Vogel,Hans G. Vogt,Igor A. Vorobiev,An A. Vorobyov,A. Vorvolakos,M. Wadhwa,Wolfgang Wallraff,Jianchun Wang,Xiaolian Wang,Zhaomin Wang,Ainas Weber,Shouxiang Wu,St Wynhoff,Jian Xu,Zizong Xu,Bin Yang,Changgen Yang,Xueyi Yao,Jian Ye,S. C. Yeh,J. M. You,An N. Zalite,Yu U. Zalite,P. Zemp,Yu Zeng,Zhiyong Zhang,Ziping Zhang,Bing Zhou,Y. Zhou,Guoyi Zhu,Renyuan Zhu,Antonino Zichichi,F. Ziegler
European Physical Journal C（1998）
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摘要
Time-dependent B0-B̄0 mixing is studied using about two million hadronic Z decays registered by L3 in 1994 and 1995. For this study three techniques are used. Tagging of the b-quark charge at decay time is performed by identifying leptons from semileptonic B decays. The flavour of the b quark at production time is determined from the charge of the lepton in the opposite hemisphere or by using a jet-charge technique. The proper time of the B-particle decay is obtained by reconstructing the production and decay vertices or by a measurement of the lepton impact parameter. The combined result for the frequency of B0 d meson oscillations is Δmd = 0.444 ± 0.040 ps-1.
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