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Measurements of branching fractions and $CP$-violating asymmetries in $B^0 \rightarrow \pi^+\pi^-, K^+\pi^-, K^+K^-$ 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 G.P. Chen J.C. Chen N.D. Qi G. Rong P. Wang Y.S. Zhu G. Eigen B. Stugu G.S. Abrams A.W. Borgland A.B. Breon D.N. Brown J. Button-Shafer R.N. Cahn 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 P.J. Oddone A. Perazzo M. Pripstein N.A. Roe A. Romosan M.T. Ronan V.G. Shelkov A.V. Telnov W.A. Wenzel P.G. Bright-Thomas 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 M. Kunze B. Lewandowski K. Peters H. Schmuecker M. Steinke J.C. Andress N.R. Barlow W. Bhimji N. Chevalier P.J. Clark W.N. Cottingham N. de Groot N. Dyce B. Foster J.D. Mcfall D. Wallom F.F. Wilson K. Abe C. Hearty T.S. Mattison J.A. Mckenna D. Thiessen S. Jolly A.K. Mckemey J. Tinslay V.E. Blinov A.D. Bukin D.A. Bukin A.R. Buzykaev V.B. Golubev V.N. Ivanchenko A.A. Korol E.A. Kravchenko A.P. Onuchin A.A. Salnikov S.I. Serednyakov Yu.I. Skovpen V.I. Telnov A.N. Yushkov D. Best A.J. Lankford M. Mandelkern S. Mcmahon D.P. Stoker A. Ahsan K. Arisaka C. Buchanan S. Chun J.G. Branson D.B. Macfarlane S. Prell 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.M. Eisner A.A. Grillo M. Grothe C.A. Heusch R.P. Johnson T. Pulliam H. Sadrozinski 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 S. Metzler J. Oyang F.C. Porter A. Ryd A. Samuel M. Weaver S. Yang R.Y. Zhu S. Devmal T.L. Geld S. Jayatilleke G. Mancinelli B.T. Meadows M.D. Sokoloff T. Barillari P. Bloom M.O. Dima S. Fahey W.T. Ford D.R. Johnson U. Nauenberg A. Olivas P. Rankin J. Roy S. Sen J.G. Smith W.C. van Hoek D.L. Wagner J. Blouw M. Krishnamurthy A. Soffer W.H. Toki R.J. Wilson J. Zhang R. Aleksan G. de Domenico A. de Lesquen S. Emery A. Gaidot S.F. Ganzhur P.F. Giraud G. Hamel de Monchenault W. Kozanecki M. Langer G.W. London B. Mayer B. Serfass G. Vasseur C. Yeche M. Zito 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 2 G.R. Bonneaud 2 F. Brochard 2 J. Cohen-Tanugi 2 S. Ferrag 2 S. t'Jampens 2 C. Thiebaux 2 G. Vasileiadis 2 M. Verderi 2 A. Anjomshoaa R. Bernet A. Khan D. Lavin F. Muheim S. Playfer J.E. Swain M. Falbo C. Borean C. Bozzi S. Dittongo L. Piemontese E. Treadwell F. Anulli R. Baldini-Ferroli A. Calcaterra R. de Sangro D. Falciai G. Finocchiaro P. Patteri I.M. Peruzzi M. Piccolo Y. Xie A. Zallo S. Bagnasco A. Buzzo R. Contri G. Crosetti M. Lo Vetere M. Macri S. Passaggio C. Patrignani E. Robutti A. Santroni S. Tosi M. Morii R. Bartoldus R. Hamilton U. Mallik J. Cochran H.B. Crawley P.A. Fischer J. Lamsa W.T. Meyer E.I. Rosenberg G. Grosdidier 3 A. Hocker 3 H.M. Lacker 3 S. Laplace 3 V. Lepeltier 3 A.M. Lutz 3 Stéphane Plaszczynski 3 M.H. Schune 3 S. Trincaz-Duvoid 3 G. Wormser 3 R.M. Bionta V. Brigljevic D.J. Lange M. Mugge K. van Bibber D.M. Wright M. Carroll 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 N.J.W. Gunawardane J.A. Nash P. Sanders D. Smith D.E. Azzopardi J.J. Back P. Dixon P.F. Harrison R.J.L. Potter H.W. Shorthouse P. Strother P.B. Vidal M.I. Williams G. Cowan S. George M.G. Green A. Kurup C.E. Marker P. Mcgrath T.R. Mcmahon S. Ricciardi F. Salvatore I. Scott G. Vaitsas D. Brown C.L. Davis J. Allison R.J. Barlow J.T. Boyd A.C. Forti J. Fullwood F. Jackson G.D. Lafferty N. Savvas E.T. Simopoulos J.H. Weatherall A. Farbin A. Jawahery V. Lillard J. Olsen D.A. Roberts J.R. Schieck G. Blaylock C. Dallapiccola K.T. Flood S.S. Hertzbach R. Kofler V.G. 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 J.-P. Martin J.Y. Nief R. Seitz P. Taras V. Zacek H. Nicholson C.S. Sutton 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 T. Handler J. Brau R. Frey M. Iwasaki N.B. Sinev D. Strom F. Colecchia F. Dal Corso A. Dorigo F. Galeazzi M. Margoni G. Michelon M. Morandin M. Posocco M. Rotondo F. Simonetto 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. Ocariz 4 L. Roos 4 J. Stark 4 P.F. Manfredi V. Re V. Speziali E.D. Frank L. Gladney Q.H. Guo J. Panetta C. Angelini G. Batignani S. Bettarini M. Bondioli M. Carpinelli F. Forti M.A. Giorgi A. Lusiani F. Martinez-Vidal M. Morganti N. Neri E. Paoloni M. Rama G. Rizzo F. Sandrelli G. Simi G. Triggiani J. Walsh M. Haire D. Judd K. Paick L. Turnbull D.E. Wagoner J. Albert P. Elmer C. Lu K.T. Mcdonald V. Miftakov S.F. Schaffner A.J.S. Smith A. Tumanov E.W. Varnes G. Cavoto D. del Re R. Faccini F. Ferrarotto F. Ferroni E. Lamanna Emilio Leonardi M.A. Mazzoni S. Morganti G. Piredda F. Safai Tehrani M. Serra C. Voena S. Christ R. Waldi T. Adye B. Franek N.I. Geddes G.P. Gopal S.M. Xella N. Copty M.V. Purohit H. Singh F.X. Yumiceva I. Adam P.L. Anthony D. Aston K. Baird N. Berger E. Bloom A.M. Boyarski F. Bulos G. Calderini M.R. Convery D.P. Coupal D.H. Coward J. Dorfan W. Dunwoodie R.C. Field T. Glanzman G.L. Godfrey S.J. Gowdy P. Grosso T. Haas T. Himel T. Hrynova M.E. Huffer W.R. Innes C.P. Jessop M.H. Kelsey P. Kim M.L. Kocian U. Langenegger S. Luitz V. Luth H.L. Lynch H. Marsiske S. Menke R. Messner K.C. Moffeit R. Mount D.R. Muller C.P. O'Grady V.E. Ozcan M. Perl S. Petrak B.N. Ratcliff S.H. Robertson L.S. Rochester A. Roodman T. Schietinger R.H. Schindler J. Schwiening V.V. Serbo A. Snyder A. Soha S.M. Spanier J. Stelzer D. Su M.K. Sullivan H.A. Tanaka Jaroslav. Va'Vra S.R. Wagner A.J.R. Weinstein W.J. Wisniewski D.H. Wright C.C. Young P.R. Burchat C.H. Cheng D. Kirkby T.I. Meyer C. Roat R. Henderson W. Bugg H. Cohn A.W. Weidemann J.M. Izen I. Kitayama X.C. Lou F. Bianchi M. Bona D. Gamba A. Smol L. Bosisio G. Della Ricca L. Lanceri P. Poropat G. Vuagnin R.S. Panvini C.M. Brown P.D. Jackson R. Kowalewski J.M. Roney H.R. Band E. Charles S. Dasu F. Di Lodovico A.M. Eichenbaum H. Hu J.R. Johnson R. Liu Y. Pan R. Prepost I.J. Scott S.J. Sekula J.H. von Wimmersperg-Toeller Z. Yu T.M.B. Kordich H. Neal
1 LAPP - Laboratoire d'Annecy de Physique des Particules
2 LLR - Laboratoire Leprince-Ringuet
3 LAL - Laboratoire de l'Accélérateur Linéaire
4 LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies
Abstract : We present measurements of branching fractions and CP-violating asymmetries for neutral B meson decays to two-body final states of charged pions and kaons based on a sample of about 88 million Y(4S)-->BB decays. From a time-independent fit we measure the charge-averaged branching fractions B(B0-->pi+pi-) = (4.7 +/- 0.6 +/- 0.2) x 10^-6, B(B0-->K+pi-) = (17.9 +/- 0.9 +/- 0.7) x 10^-6, and the direct CP-violating charge asymmetry A(Kpi) = -0.102 +/- 0.050 +/- 0.016; [-0.188,-0.016], where the ranges in square brackets indicate the 90% confidence intervals. From a time-dependent fit we measure the B0-->pi+pi- CP-violating parameters Spipi = 0.02 +/- 0.34 +/- 0.05; [-0.54,+0.58] and Cpipi = -0.30 +/- 0.25 +/- 0.04; [-0.72,+0.12].
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Submitted on : Wednesday, July 23, 2003 - 3:34:43 PM
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LAL | CNRS | LAPP | LLR | LPNHE | UNIV-SAVOIE | IN2P3 | X-LLR | X | UPMC | X-DEP-PHYS | SORBONNE-UNIVERSITE | SU-SCIENCES | UNIV-PARIS7 | USPC | UNIV-PARIS | UP-SCIENCES | UGA | SU-TI

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B. Aubert, D. Boutigny, J.M. Gaillard, A. Hicheur, Y. Karyotakis, et al.. Measurements of branching fractions and $CP$-violating asymmetries in $B^0 \rightarrow \pi^+\pi^-, K^+\pi^-, K^+K^-$ decays. Physical Review Letters, American Physical Society, 2002, 89, pp.281802. ⟨in2p3-00013863⟩

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