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Simultaneous Measurement of the $B^0$ Meson Lifetime and Mixing Frequency with $B^0 \rightarrow D^{*-}\ell^+\nu_\ell$ Decays

B. Aubert 1 D. Boutigny 1 J.M. Gaillard 1 A. Hicheur 1 Y. Karyotakis 1 J.P. Lees 1 P. Robbe 1 V. Tisserand 1 A. Zghiche 1 A. Palano A. Pompili J.C. Chen N.D. Qi G. Rong P. Wang Y.S. Zhu G. Eigen I. Ofte B. Stugu G.S. Abrams A.W. Borgland A.B. Breon D.N. Brown J. Button-Shafer R.N. Cahn E. Charles M.S. Gill A.V. Gritsan Y. Groysman R.G. Jacobsen R.W. Kadel J. Kadyk L.T. Kerth Yu.G. Kolomensky J.F. Kral Céline Leclerc M.E. Levi G. Lynch L.M. Mir P.J. Oddone T.J. Orimoto M. Pripstein N.A. Roe A. Romosan M.T. Ronan V.G. Shelkov A.V. Telnov W.A. Wenzel T.J. Harrison C.M. Hawkes D.J. Knowles S.W. O'Neale R.C. Penny A.T. Watson N.K. Watson T. Deppermann K. Goetzen H. Koch B. Lewandowski K. Peters H. Schmuecker M. Steinke N.R. Barlow W. Bhimji J.T. Boyd N. Chevalier P.J. Clark W.N. Cottingham C. Mackay F.F. Wilson K. Abe C. Hearty T.S. Mattison J.A. Mckenna D. Thiessen S. Jolly A.K. Mckemey V.E. Blinov A.D. Bukin A.R. Buzykaev V.B. Golubev V.N. Ivanchenko A.A. Korol E.A. Kravchenko A.P. Onuchin S.I. Serednyakov Yu.I. Skovpen A.N. Yushkov D. Best M. Chao D. Kirkby A.J. Lankford M. Mandelkern S. Mcmahon D.P. Stoker C. Buchanan S. Chun H.K. Hadavand E.J. Hill D.B. Macfarlane H. Paar S. Prell S. Rahatlou G. Raven V. Sharma J.W. Berryhill C. Campagnari B. Dahmes P.A. Hart N. Kuznetsova S.L. Levy O. Long M.A. Mazur J.D. Richman W. Verkerke J. Beringer A.M. Eisner M. Grothe C.A. Heusch W.S. Lockman T. Pulliam T. Schalk R.E. Schmitz B.A. Schumm A. Seiden M. Turri W. Walkowiak D.C. Williams M.G. Wilson E. Chen G.P. Dubois-Felsmann A. Dvoretskii D.G. Hitlin F.C. Porter A. Ryd A. Samuel S. Yang S. Jayatilleke G. Mancinelli B.T. Meadows M.D. Sokoloff T. Barillari P. Bloom W.T. Ford U. Nauenberg A. Olivas P. Rankin J. Roy J.G. Smith W.C. van Hoek L. Zhang J.L. Harton T. Hu M. Krishnamurthy A. Soffer W.H. Toki R.J. Wilson J. Zhang D. Altenburg T. Brandt J. Brose T. Colberg M. Dickopp R.S. Dubitzky A. Hauke E. Maly R. Muller-Pfefferkorn S. Otto K.R. Schubert R. Schwierz B. Spaan L. Wilden D. Bernard G.R. Bonneaud F. Brochard J. Cohen-Tanugi S. Ferrag S. t'Jampens C. Thiebaux G. Vasileiadis M. Verderi A. Anjomshoaa R. Bernet A. Khan D. Lavin F. Muheim S. Playfer J.E. Swain J. Tinslay M. Falbo C. Borean C. Bozzi L. Piemontese A. Sarti E. Treadwell F. Anulli R. Baldini-Ferroli A. Calcaterra R. de Sangro D. Falciai G. Finocchiaro P. Patteri I.M. Peruzzi M. Piccolo A. Zallo S. Bagnasco A. Buzzo R. Contri G. Crosetti M. Lo Vetere M. Macri M.R. Monge F.C. Pastore C. Patrignani E. Robutti A. Santroni S. Tosi S. Bailey M. Morii R. Bartoldus G.J. Grenier U. Mallik J. Cochran H.B. Crawley J. Lamsa W.T. Meyer E.I. Rosenberg J. Yi M. Davier 2 G. Grosdidier 2 A. Hocker 2 H.M. Lacker 2 S. Laplace 2 F. Le Diberder 2 V. Lepeltier 2 A.M. Lutz 2 T.C. Petersen 2 Stéphane Plaszczynski 2 M.H. Schune 2 L. Tantot 2 S. Trincaz-Duvoid 2 G. Wormser 2 R.M. Bionta V. Brigljevic D.J. Lange K. van Bibber D.M. Wright A.J. Bevan J.R. Fry E. Gabathuler R. Gamet M. George M. Kay D.J. Payne R.J. Sloane C. Touramanis M.L. Aspinwall D.A. Bowerman P.D. Dauncey U. Egede I. Eschrich G.W. Morton J.A. Nash P. Sanders D. Smith G.P. Taylor J.J. Back G. Bellodi P. Dixon P.F. Harrison R.J.L. Potter H.W. Shorthouse P. Strother P.B. Vidal G. Cowan H.U. Flaecher S. George M.G. Green A. Kurup C.E. Marker T.R. Mcmahon S. Ricciardi F. Salvatore G. Vaitsas M.A. Winter D. Brown C.L. Davis J. Allison R.J. Barlow A.C. Forti F. Jackson G.D. Lafferty A.J. Lyon N. Savvas J.H. Weatherall J.C. Williams A. Farbin A. Jawahery V. Lillard D.A. Roberts J.R. Schieck G. Blaylock C. Dallapiccola K.T. Flood S.S. Hertzbach R. Kofler V.B. Koptchev T.B. Moore H. Staengle S. Willocq B. Brau R. Cowan G. Sciolla F. Taylor R.K. Yamamoto M. Milek P.M. Patel F. Palombo J.M. Bauer L. Cremaldi V. Eschenburg R. Kroeger J. Reidy D.A. Sanders D.J. Summers C. Hast P. Taras H. Nicholson N. Cavallo G. de Nardo F. Fabozzi C. Gatto L. Lista P. Paolucci D. Piccolo C. Sciacca J.M. Losecco J.R.G. Alsmiller T.A. Gabriel J. Brau R. Frey M. Iwasaki C.T. Potter N.B. Sinev D. Strom E. Torrence F. Colecchia A. Dorigo F. Galeazzi M. Margoni M. Morandin M. Posocco M. Rotondo F. Simonetto R. Stroili C. Voci M. Benayoun H. Briand J. Chauveau P. David C. de la Vaissiere L. del Buono O. Hamon P. Leruste J. Ocariz M. Pivk L. Roos J. Stark P.F. Manfredi V. Re V. Speziali L. Gladney Q.H. Guo J. Panetta C. Angelini G. Batignani S. Bettarini M. Bondioli F. Bucci G. Calderini E. Campagna M. Carpinelli F. Forti M.A. Giorgi A. Lusiani G. Marchiori F. Martinez-Vidal M. Morganti N. Neri E. Paoloni M. Rama G. Rizzo F. Sandrelli G. Triggiani J. Walsh M. Haire D. Judd K. Paick L. Turnbull D.E. Wagoner J. Albert N. Danielson P. Elmer C. Lu V. Miftakov J. Olsen S.F. Schaffner A.J.S. Smith A. Tumanov E.W. Varnes F. Bellini G. Cavoto D. del Re R. Faccini F. Ferrarotto F. Ferroni Emilio Leonardi S. Morganti G. Piredda F. Safai Tehrani M. Serra C. Voena S. Christ G. Wagner R. Waldi T. Adye N. de Groot B. Franek N.I. Geddes G.P. Gopal S.M. Xella R. Aleksan S. Emery A. Gaidot P.F. Giraud G. Hamel de Monchenault W. Kozanecki M. Langer G.W. London B. Mayer G. Schott B. Serfass G. Vasseur C. Yeche M. Zito M.V. Purohit A.W. Weidemann F.X. Yumiceva I. Adam D. Aston N. Berger A.M. Boyarski M.R. Convery D.P. Coupal D. Dong J. Dorfan W. Dunwoodie R.C. Field T. Glanzman S.J. Gowdy E. Grauges T. Haas T. Hadig V. Halyo T. Himel T. Hrynova M.E. Huffer W.R. Innes C.P. Jessop M.H. Kelsey P. Kim M.L. Kocian U. Langenegger D.W.G.S. Leith S. Luitz V. Luth H.L. Lynch H. Marsiske S. Menke R. Messner D.R. Muller C.P. O'Grady V.E. Ozcan A. Perazzo M. Perl S. Petrak H. Quinn B.N. Ratcliff S.H. Robertson A. Roodman A.A. Salnikov T. Schietinger R.H. Schindler J. Schwiening G. Simi A. Snyder A. Soha S.M. Spanier J. Stelzer D. Su M.K. Sullivan H.A. Tanaka J. Vavra S.R. Wagner M. Weaver A.J.R. Weinstein W.J. Wisniewski D.H. Wright C.C. Young P.R. Burchat C.H. Cheng T.I. Meyer C. Roat R. Henderson W. Bugg H. Cohn J.M. Izen I. Kitayama X.C. Lou F. Bianchi M. Bona D. Gamb L. Bosisio G. Della Ricca S. Dittongo L. Lanceri P. Poropat L. Vitale G. Vuagnin R.S. Panvini S. Banerjee C.M. Brown D. Fortin P.D. Jackson R. Kowalewski J.M. Roney H.R. Band S. Dasu M. Datta A.M. Eichenbaum H. Hu J.R. Johnson R. Liu F. Di Lodovico A. Mohapatra Y. Pan R. Prepost I.J. Scott S.J. Sekula J.H. von Wimmersperg-Toeller J. Wu S.L. Wu Z. Yu H. Neal
Abstract : We measure the B0 lifetime tau_B0 and the B-Bbar oscillation frequency Deltam_d with a sample of approximately 14,000 exclusively reconstructed B0 -> D*- l+ nu_l signal events, selected from 23 million B-Bbar pairs recorded at the Upsilon(4S) resonance with the BABAR detector at the Stanford Linear Accelerator Center. The b-quark flavor of the other B at the time of decay and its decay position are determined inclusively. The lifetime and oscillation frequency are measured simultaneously with an unbinned maximum-likelihood fit that uses, for each event, the measured difference in B decay times (Delta-t), the calculated uncertainty on Delta-t, the signal and background probabilities, and b-quark tagging information for the other B. The preliminary results are tau_B0 = (1.523 +0.024 -0.023 (stat) +/- 0.022 (syst)) ps and Deltam_d = (0.492 +/- 0.018 (stat) +/- 0.013 (syst)) ps^-1. The statistical correlation coefficient between tau_B0 and Deltam_d is -0.22.
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Submitted on : Tuesday, January 14, 2003 - 3:38:09 PM
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B. Aubert, D. Boutigny, J.M. Gaillard, A. Hicheur, Y. Karyotakis, et al.. Simultaneous Measurement of the $B^0$ Meson Lifetime and Mixing Frequency with $B^0 \rightarrow D^{*-}\ell^+\nu_\ell$ Decays. International Conference on High Energy Physics 31 ICHEP 2002, Jul 2002, Amsterdam, Netherlands. pp.1-29. ⟨in2p3-00012422⟩

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