A study of time-dependent CP-violating asymmetries in $B^{0} \to J/\psi K^{0}_{S}$ and $B^{0} \to \psi(2S) K^{0}_{S}$ decays

B. Aubert 1 A. Boucham 1 D. Boutigny 1 I. De Bonis 1 J. Favier 1 J.M. Gaillard 1 F. Galeazzi 1 A. Jeremie 1 Y. Karyotakis 1 J.P. Lees 1 P. Robbe 1 V. Tisserand 1 K. Zachariadou 1 A. Palano G.P. Chen J.C. Chen N.D. Qi G. Rong P. Wang Y.S. Zhu G. Eigen P.L. Reinertsen B. Stugu B. Abbott G.S. Abrams A.W. Borgland A.B. Breon D.N. Brown J. Button-Shafer R.N. Cahn A.R. Clark Q. Fan M.S. Gill S.J. Gowdy Y. Groysman R.G. Jacobsen R.W. Kadel J. Kadyk L.T. Kerth S. Kluth J.F. Kral C. Leclerc M.E. Levi T. Liu G. Lynch A.B. Meyer M. Momayezi P.J. Oddone A. Perazzo M. Pripstein N.A. Roe A. Romosan M.T. Ronan V.G. Shelkov P. Strother A.V. Telnov W.A. Wenzel P.G. Bright-Thomas T.J. Champion C.M. Hawkes A. Kirk S.W. O'Neale A.T. Watson N.K. Watson T. Deppermann H. Koch J. Krug M. Kunze B. Lewandowski K. Peters H. Schmuecker M. Steinke J.C. Andress N. Chevalier P.J. Clark N. Cottingham N. De Groot N. Dyce B. Foster A. Mass D. Wallom F.F. Wislon K. Abe C. Hearty T.S. Mattison J.A. McKenna D. Thiessen B. Camanzi A.K. McKemey J. Tinslay V.E. Blinov A.D. Bukin D.A. Bukin A.R. Buzykaev M.S. Dubrovin V.B. Golubev V.N. Ivanchenko A.A. Korol E.A. Kravchenko A.P. Onuchin A.A. Salnikov S.I. Serednyakov Y.I. Skovpen A.N. Yushkov A.J. Lankford M. Mandelkern D.P. Stoker A. Ahsan K. Arisaka C. Buchanan S. Chun J.G. Branson R. Faccini D.B. MacFarlane S. Rahatlou G. Raven V. Sharma C. Campagnari B. Dahmes P.A. Hart N. Kuznetsova S.L. Levy O. Long A. Lu J.D. Richman W. Verkerke M. Witherell S. Yellin J. Beringer D.E. Dorfan A. Eisner A. Frey A.A. Grillo M. Grothe C.A. Heusch R.P. Johnson W. Kroeger W.S. Lockman T. Pulliam H. Sadrozinski T. Schalk R.E. Schmitz B.A. Schumm A. Seiden M. Turri D.C. Williams E. Chen G.P. Dubois-Felsmann A. Dvoretskii D.G. Hitlin Y.G. Kolomensky S. Metzler J. Oyang F.C. Porter A. Ryd A. Samuel M. Weaver S. Yang R.Y. Zhu R. Aleksan G. De Domenico A. De Lesquen S. Emery A. Gaidot S.F. Ganzhur G. Hamel De Monchenault W. Kozanecki M. Langer G.W. London B. Mayer B. Serfass G. Vasseur C. Yeche M. Zito S. Devmal T.L. Geld S. Jayatilleke S.M. Jayatilleke G. Mancinelli B.T. Meadows M.D. Sokoloff J. Blouw M. Krishnamurthy A. Soffer W.H. Toki R.J. Wilson J. Zhang S. Fahey F. Gaede U. Nauenberg A. Olivas H. Park P. Rankin J. Roy S. Sen D.L. Wagner T. Brandt J. Brose G. Dahlinger M. Dickopp R.S. Dubitzky M.L. Kocian R. Muller-Pfefferkorn K.R. Schubert R. Schwierz B. Spaan L. Wilden L. Behr 2 D. Bernard 2 G.R. Bonneaud 2 F. Brochard 2 J. Cohen-Tanugi 2 S. Ferrag 2 E. Roussot 2 C. Thiebaux 2 G. Vasileiadis 2 M. Verderi 2 A. Anjomshoaa R. Bernet F. Di Lodovico F. Muheim S. Playfer J.E. Swain C. Bozzi S. Dittongo M. Folegani L. Piemontese E. Treadwell 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 P. Fabbricatore S. Farinon M. Lo Vetere M. Macri M.R. Monge R. Musenich R. Parodi S. Passaggio F.C. Pastore C. Patrignani M.G. Pia C. Priano E. Robutti A. Santroni J. Cochran H.B. Crawley P.A. Fischer J. Lamsa W.T. Meyer E.I. Rosenberg R. Bartoldus T. Dignan R. Hamilton U. Mallik C. Angelini G. Batignani S. Bettarini M. Bondioli M. Carpinelli F. Forti M.A. Giorgi A. Lusiani M. Morganti E. Paoloni M. Rama G. Rizzo F. Sandrelli G. Simi G. Triggiani M. Benkebil 3 G. Grosdidier 3 C. Hast 3 A. Hoecker 3 V. Lepeltier 3 A.M. Lutz 3 S. Plaszczynski 3 M.H. Schune 3 S. Trincaz-Duvoid 3 A. Valassi 3 G. Wormser 3 R.M. Bionta V. Brigljevic O. Fackler D. Fujino M. Mugge X. Shi T.J. Wenaus D.M. Wright C.R. Wuest M. Carroll J.R. Fry E. Gabathuler R. Gamet M. George M. Kay S. McMahon T.R. McMahon D.J. Payne C. Touramanis M.L. Aspinwall P.D. Dauncey I. Eschrich N.J.W. Gunawardane R. Martin P. Sanders D. Smith D.E. Azzopardi J.J. Back P. Dixon P.F. Harrison P.B. Vidal M.I. Williams G. Cowan M.G. Green A. Kurup P. McGrath I. Scott D. Brown C.L. Davis Y. Li J. Pavlovich A. Trunov J. Allison R.J. Barlow J. Fullwood A. Khan G.D. Lafferty N. Savvas E.T. Simopoulos R.J. Thompson J.H. Weatherall C. Dallapiccola A. Farbin A. Jawahery V. Lillard J. Olsen D.A. Roberts B. Brau R. Cowan F. Taylor R.K. Yamamoto G. Blaylock K.T. Flood S.S. Hertzbach R. Kofler C.S. Lin S. Willocq J. Wittlin P. Bloom D.I. Britton M. Milek P.M. Patel J. Trischuk F. Lanni F. Palombo J.M. Bauer M. Booke L. Cremaldi R. Kroeger J. Reidy D. Sanders D.J. Summers J.F. Arguin J.-P. Martin J.Y. Nief R. Seitz P. Taras A. Woch V. Zacek H. Nicholson C.S. Sutton N. Cavallo G. De Nardo F. Fabozzi C. Gatto L. Lista D. Piccolo C. Sciacca M. Falbo J.M. LoSecco T. Handler F. Colecchia F. Dal Corso G. Michelon M. Morandin M. Posocco R. Stroili E. Torassa C. Voci M. Benayoun 4 H. Briand 4 J. Chauveau 4 P. David 4 C. De La Vaissiere 4 L. Del Buono 4 O. Hamon 4 F. Le Diberder 4 P. Leruste 4 J. Lory 4 F. Martinez-Vidal 4 L. Roos 4 J. Stark 4 S. Versille 4 P.F. Manfredi V. Re V. Speziali E.D. Frank L. Gladney Q.H. Guo J.H. Panetta M. Haire D. Judd K. Paick L. Turnbull D.E. Wagoner J. Albert C. Bula M.H. Kelsey C. Lu K.T. McDonald V. Miftakov S.F. Schaffner A.J.S. Smith A. Tumanov E.W. Varnes G. Cavoto F. Ferrarotto F. Ferroni K. Fratini E. Lamanna E. Leonardi M.A. Mazzoni S. Morganti G. Piredda F. Safai Tehrani M. Serra R. Waldi P.F. Jacques M. Kalelkar R.J. Plano T. Adye U. Egede B. Franek G.P. Gopal N. Copty M.V. Purohit F.X. Yumiceva I. Adam P.L. Anthony F. Anulli D. Aston K. Baird E. Bloom A.M. Boyarski F. Bulos G. Calderini M.R. Convery D.P. Coupal D.H. Coward J. Dorfan M. Doser W. Dunwoodie T. Glanzman G.L. Godfrey P. Grosso J.L. Hewett T. Himel M.E. Huffer W.R. Innes C.P. Jessop P. Kim U. Langenegger D.W.G.S. Leith S. Luitz V. Luth H.L. Lynch G. Manzin H. Marsiske S. Menke R. Messner K.C. Moffeit M. Morii R. Mount D.R. Muller C.P. O'Grady P. Paolucci S. Petrak H. Quinn B.N. Ratcliff S.H. Robertson L.S. Rochester A. Roodman T. Schietinger R.H. Schindler J. Schwiening G. Sciolla V.V. Serbo A. Snyder A. Soha S.M. Spanier A. Stahl D. Su M.K. Sullivan M. Talby H.A. Tanaka J. Vavra S.R. Wagner A.J.R. Weinstein W.J. Wisniewski C.C. Young P.R. Burchat C.H. Cheng D. Kirkby T.I. Meyer C. Roat A. De Silva R. Henderson W. Bugg H. Cohn E. Hart A.W. Weidemann T. Benninger J.M. Izen I. Kitayama X.C. Lou M. Turcotte F. Bianchi M. Bona B. Di Girolamo D. Gamba A. Smol D. Zanin L. Bosisio G. Della Ricca L. Lanceri A. Pompili P. Poropat M. Prest E. Vallazza G. Vaugnin R.S. Panvini C.M. Brown P.D. Jackson R. Kowalewski J.M. Roney H.R. Band E. Charles S. Dasu P. Elmer J.R. Johnson J. Nielsen W. Orejudos Y. Pan R. Prepost J. Walsh Z. Yu H. Zobernig
Abstract : We present a preliminary measurement of time-dependent CP-violating asymmetries in B0 -> J/psi K0S and B0 -> psi(2S) K0S decays recorded by the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. The data sample consists of 9.0 fb-1 collected at the Y(4S) resonance and 0.8 fb-1 off-resonance. One of the neutral B mesons, produced in pairs at the Y(4S), is fully reconstructed. The flavor of the other neutral B meson is tagged at the time of its decay, mainly with the charge of identified leptons and kaons. A neural network tagging algorithm is used to recover events without a clear lepton or kaon tag. The time difference between the decays is determined by measuring the distance between the decay vertices. Wrong-tag probabilities and the time resolution function are measured with samples of fully-reconstructed semileptonic and hadronic neutral B final states. The value of the asymmetry amplitude, sin2beta, is determined from a maximum likelihood fit to the time distribution of 120 tagged B0 -> J/psi K0S and B0 -> psi(2S) K0S candidates to be sin2beta = 0.12+/-0.37 (stat) +/- 0.09 (syst) (preliminary).
docType_s :
Conference papers
International Conference on High-Energy Physics 30 ICHEP 2000, Jul 2000, Osaka, Japan. pp.1-21


http://hal.in2p3.fr/in2p3-00006104
Contributor : Nicole Berger <>
Submitted on : Tuesday, September 19, 2000 - 5:00:12 PM
Last modification on : Tuesday, September 19, 2000 - 5:00:12 PM

Identifiers

Citation

B. Aubert, A. Boucham, D. Boutigny, I. De Bonis, J. Favier, et al.. A study of time-dependent CP-violating asymmetries in $B^{0} \to J/\psi K^{0}_{S}$ and $B^{0} \to \psi(2S) K^{0}_{S}$ decays. International Conference on High-Energy Physics 30 ICHEP 2000, Jul 2000, Osaka, Japan. pp.1-21. <in2p3-00006104>

Export

Share

Metrics

Consultation de la notice

32