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Measurement of $B^0 \rightarrow D_s^{(*)+}D^{*-}$ branching fractions and polarization in the decay $B^0 \rightarrow D_s^{(*)+}D^{*-}$ with a partial reconstruction technique

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 present measurements of the decays B0->Ds(*)+D*-, using data recorded by the BABAR detector in 1999 and 2000, consisting of 20.8 fb^-1. The analysis is conducted with a partial reconstruction technique, in which only the Ds(*)+ and the soft pion from the D*- decay are reconstructed. From the observed rates, we measure the branching fractions BR(B0->Ds+D*-) = (1.03 +- 0.14 +- 0.13 +- 0.26)% and BR(B0->Ds*+D*-) = (1.97 +- 0.15 +- 0.30 +- 0.49)%, where the first error is statistical, the second is systematic, and the third is the error due to the Ds+->phi pi+ branching fraction uncertainty. From the B0->Ds*+D*- angular distributions, we measure the fraction of longitudinal polarization Gamma_L/Gamma = (51.9 +- 5.0 +- 2.8)%, which is consistent with the theoretical prediction, based on factorization. These results are preliminary.
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Submitted on : Tuesday, January 14, 2003 - 2:06:28 PM
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B. Aubert, D. Boutigny, J.M. Gaillard, A. Hicheur, Y. Karyotakis, et al.. Measurement of $B^0 \rightarrow D_s^{(*)+}D^{*-}$ branching fractions and polarization in the decay $B^0 \rightarrow D_s^{(*)+}D^{*-}$ with a partial reconstruction technique. International Conference on High Energy Physics 31 ICHEP 2002, Jul 2002, Amsterdam, Netherlands. pp.1-22. ⟨in2p3-00013686⟩

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