Measurement of the B^0-anti-B^0 oscillation frequency in hadronic B^0 Decays

Bernard Aubert,S Yellin,G Simi, S Trincazduvoid,F Le Diberder,K Fratini,C M Brown,A M Boyarski,M Momayezi,F Brochard,M Dima,M Weaver, A V Gritsan, R H Schindler,V Eschenburg, J G Branson,Yiming Xie,Steve Mcmahon,J Oyang,C C Young,D Best,C Yeche,T Schalk,C Borean,R N Cahn, K Arisaka,E Lamanna,M Iwasaki, H Nicholson,A D Bukin,M Falbo,R Faccini,R J L Potter,L Del Buono,M Krishnamurthy,K Van Bibber,F Ferroni,D J Lange, F C Porter, F Muheim, Tetiana Bergerhrynova,T J Harrison,C Buchanan,J Brose,A Lusiani, D Piccolo,M Haire, S Dasu,J Reidy,D Judd,A Palano,D Lavin,N Chevalier,G Grosdidier,K Goetzen,D J Knowles,C Gatto, K Peters,M Piccolo, A W Borgland,J Blouw,M Carpinelli,T M B Kordich,G Lynch,W C Van Hoek,A Gaidot,P F Manfredi,T I Meyer,D L Wagner,M Benkebil,A Valassi,N D Qi,L Roos, V Luth, G Sciolla,G Hamel De Monchenault, S R Wagner,John N Olsen,Sau Lan Wu,A Hauke, D Boutigny,W R Innes, F Forti, A Ryd,V Re,J H Von Wimmerspergtoeller,M Posocco,M Turri,K R Schubert, V Brigljevic,G Michelon,S George,E Paoloni, R Kroeger,R M Bionta,T B Moore, J Trischuk,S Petrak,A A Grillo, A Farbin,C Angelini,V Zacek, G Cowan, J Beringer, E Gabathuler,S Bagnasco,R Prepost, I J Scott,R J Sloane,Denis Bernard, L Gladney,A Smol,J Tinslay,J Panetta,P L Reinertsen,F Galeazzi,M Rotondo,A Romosan,C Hast, M L Kocian,M Serra, Richard Hamilton,A Snyder,F Jackson, F Pastore,M Mugge,M Zito,Rudiger J Seitz,K Paick,C E Marker,S Levy, J Zhang, J E Swain,A Lu,G Rong,M Morganti, A Roodman,M G Pia,W A Wenzel,J Lory, H M Lacker,R E Schmitz, A V Telnov,N Kuznetsova,Yu I Skovpen, S J Sekula,A Calcaterra,J Chauveau,G Mancinelli,V Lillard,S Jayatilleke,G Vuagnin,C Voena,C Leclerc, B Abbott,P Dixon,R K Yamamoto,R Y Zhu,P Robbe,D Falciai,W Kozanecki, T Adye, W T Meyer,H Quinn,G W London,P David,B Spaan,M E Huffer,A Dorigo,A B Breon,R C Field,Jason Nielsen, Vinod Sharma, G Vasseur,J Kadyk, B Dahmes,L Behr,A M Eisner,G R Bonneaud,E Chen, E W Varnes, R E Mount,A R Buzykaev,D E Wagoner, L Lista,G P Chen,G Cavoto,G De Nardo, F Yumiceva,M Rama,Robert D Cowan,S M Spanier, A Zallo,R Waldi,C S Sutton,R Contri,N Savvas,M Kalelkar,M Carroll,S Luitz, M Grothe,A Anjomshoaa,G Vasileiadis,C Voci,T Dignan, S Willocq, Matthew Kay,R W Kadel,M I Williams, C Bozzi,D Kirkby,T L Geld,A M Eichenbaum, U Nauenberg,M Milek, N R Barlow, J M Izen,A Santroni,M Bona,S F Ganzhur,F Martinezvidal,R G Jacobsen,M Booke,A Buzzo,M Lo Vetere,J C Chen,J M Bauer,A M Lutz,M Perl,G Rizzo,E Vallazza,T Liu,D A Roberts,S Chun,A K Mckemey,E Robutti,L T Kerth,A Kurup,C Cartaro,M Pallavicini,G Wormser,S Emery,S Ricciardi, A Jawahery,J F Kral, B A Schumm, C M Hawkes,S Versille, W Walkowiak, J Vavra,L Bosisio,J Stark,V Lepeltier,J D Mcfall,J A Mckenna,L Piemontese, A Meyer,A N Yushkov, W Bhimji,G Batignani, N B Sinev,Y S Zhu,M Prest,Kirk T Mcdonald,J L Harton,E Maly,D B Macfarlane,J Buttonshafer, C P Jessop,M H Schune,P R Burchat,P Brightthomas, J Cohentanugi, N Neri, F Simonetto,D H Coward,M K Sullivan,G Triggiani,Ph Leruste,Xin Shi,J C Andress,G Raven,I Kitayama,D Strom,D P Coupal,Q H Guo,C P Ogrady,M G Green, M V Purohit, W T Ford, S Xella,D R Muller,K T Flood,Shaohua Yang,F Bianchi, T A Gabriel,D E Dorfan,J H Weatherall,M Mandelkern,D Thiessen,D G Hitlin,G Dahlinger,Z Yu,P A Hart,P Sanders,T Deppermann,W N Cottingham,Richard Henderson,W H Toki,A Perazzo,J Allison,I M Peruzzi,C Lu,S Dittongo,G D Lafferty,Patrick J Mcgrath,R Mullerpfefferkorn,S Playfer, R Schwierz, J P Lees,G Eigen,S Devmal,T Handler,R P Johnson,H Marsiske,J M Gaillard, M Margoni,O Hamon,A Ahsan,C Patrignani,K C Moffeit, N Cavallo,H Park,M Verderi,M Morandin,E D Frank,A J R Weinstein,M Pripstein,S Kluth,T Pulliam,S I Serednyakov,E Treadwell, S J Gowdy,R Baldiniferroli,M D Sokoloff,M E Levi, S Laplace,A Dvoretskii, B Brau, J Schieck,F Di Lodovico,N Copty, F F Wilson, F Salvatore,R Messner,M Turcotte,J Brau, F Anulli,M H Kelsey,A J S Smith,V G Shelkov, J Dorfan,M Dickopp,R De Sangro,V I Telnov,B Mayer,S Christ,S Prell,Samson M Jolly,C Bula, J Nash,D A Bowerman,P B Vidal, R Frey,D A Smith,B T Meadows,P Rankin,M A Mazzoni,J Krug,J G Smith,S W Oneale,James R Johnson,B Lewandowski, E I Rosenberg,K Abe, H W Shorthouse, H R Band,V Miftakov,S Bettarini,B Di Girolamo, B Stugu,E Leonardi,Philip Kim,A Hocker,E Roussot,G Finocchiaro,S Metzler,V Speziali, T Wenaus,D P Stoker, P D Dauncey,D W G S Leith,S Fahey,R C Penny, A T Watson,S Otto,P M Patel,Ch Thiebaux,G Della Ricca, A Seiden,T S Mattison,D Del Re,D Wallom,P Paolucci, E D Bloom,F Bulos, S Sen,D E Azzopardi,D Aston,S Farinon,Paul F Jacques,V E Blinov,P F Giraud,Runhui Liu, A Forti,B Franek,D Gamba,P J Oddone,J M Losecco, E Torassa,R Parodi,W J Wisniewski,T R Mcmahon,I Eschrich,J Schwiening, U Langenegger,W Dunwoodie, S Ferrag, Yufei Pan,R Bernet,L Lanceri,I Adam,H Briand,O Long,R J Wilson, G Calderini,B N Ratcliff, L Cremaldi,G P Gopal,D Zanin,R Stroili, A J Lankford,W Bugg, E Charles,R J Plano,T Schietinger, Ralf A Claus,N Dyce,A Woch,Matthias George, Azad A Khan,P L Anthony,W Kroeger,C R Wuest, M Steinke,C De La Vaissiere,M Macri,R S Dubitzky,C Sciacca,C Priano,J J Back, A H Samuel,A P Onuchin,N J W Gunawardane,H Staengle, F Taylor,V N Ivanchenko,F Colecchia, S H Robertson,R Gamet,P Taras,G De Domenico, D J Summers, D A Sanders,R Aleksan,Patricia Del Grosso,B Serfass,P Strother,Peng Wang,E T Simopoulos,M Langer, Asoka S De Silva,M Doser, J F Cochran, A Pompili, H F W Sadrozinski,S F Schaffner,F Safai Tehrani,G S Abrams,H L Lynch, W Verkerke,T Colberg,H Koch,R Kofler, J Albert,N I Geddes,P J Clark,S Morganti,G Godfrey, T Glanzman, J D Richman, E A Kravchenko, A Soha,V B Golubev, F Fabozzi,J R Fry,A Hicheur,M Bondioli,H Hu, D Su,L S Rochester,Peter Fischer,J P Martin,Michael S Witherell, M G Wilson,P Patteri,G Blaylock,A Olivas,H Schmuecker,J Roy,C H Cheng, David Nathan Brown, Yu G Kolomensky,Hidekazu Tanaka,M A Giorgi, D C Williams,H O Cohn,H Zobernig, S Rahatlou,Maurice Benayoun,R S Panvini,A W Weidemann,J W Lamsa, P F Harrison,M L Aspinwall,H Singh,C A Heusch,N De Groot, A A Salnikov,J E Walsh, C Dallapiccola, R Bartoldus, C Campagnari,F Sandrelli,T Himel,N A Roe, R Kowalewski,L Wilden,P Elmer, P Fabbricatore, Adele R Clark,T Brandt, S Menke,G Vaitsas,M T Ronan,P Poropat,F Palombo,J Y Nief,D H Wright,S S Hertzbach, J P Berger,D R Johnson, W S Lockman, C Touramanis,X C Lou, S Passaggio, M Morii,M R Monge, S Tjampens,K G Baird,C Roat,Y Karyotakis, R Musenich,D J Payne, H A Neal,G Piredda,Francesco Lanni,M S Gill, T Barillari,J R G Alsmiller,U Egede,U Mallik, R J Barlow,A Tumanov, G Crosetti,M Folegani,F Ferrarotto,H B Crawley,Y Groysman,V V Serbo,M Kunze, C Hearty,B Foster,J M Roney,C L Davis,S Plaszczynski,P C Bloom,G P Duboisfelsmann,L Turnbull,F Dal Corso, A Soffer,V Tisserand,N K Watson,J Fullwood,J Stelzer, A A Korol, J T Boyd,D A Bukin,M R Convery,A Frey

msra（2001）

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摘要

B^0-anti-B^0 flavor oscillations have been studied in 20.7 fb-1 of e^+e^- annihilation data collected in 1999 and 2000 with the BABAR detector at center-of-mass energies near the Upsilon(4S) resonance. The event sample consists of one B^0 meson fully reconstructed in a hadronic decay mode, while the flavor of the recoiling B^0 in the event is determined with a tagging algorithm that exploits the correlation between the flavor of the heavy quark and the charges of its decay products. By fitting the time development of the observed mixed and unmixed final states, the B^0-anti-B^0 oscillation frequency, Delta_md, is determined to be 0.519+/- 0.020+/- 0.016 ps^{-1}.

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关键词

data,oscillations,elementary particles,annihilation,data collection,center of mass

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