Measurement of CP Asymmetries and Branching Fractions in Charmless Two-Body B-Meson Decays to Pions and Kaons

  title={Measurement of CP Asymmetries and Branching Fractions in Charmless Two-Body B-Meson Decays to Pions and Kaons},
  author={J. P. Lees and V. Poireau and Vincent Tisserand and Jordi Garra Tico and Eugeni Grauges and Preema Rennee Pais and Gerald Eigen and Bjarne Stugu and David Brown and L. T. Kerth and Yu. G. Kolomensky and G. Lynch and Hans Koch and Tamara Vazquez Schroeder and D. J. Asgeirsson and Christopher Hearty and Thomas S. Mattison and Yu. I. Skovpen and Raymond H. Y. So and B. A. Petersen and V. E. Blinov and Aleksey Buzykaev and V. P. Druzhinin and Vladimir B. Golubev and E. A. Kravchenko and Walter R. Innes and S. I. Serednyakov and Evgeny Solodov and K. Yu. Todyshev and Alexey Yushkov and Mariasole Bondioli and David P. Kirkby and A. J. Lankford and Marshal Mandelkern and Hulya Atmacan and Ciaran L. S. Lewis and Feng Liu and Owen Rosser Long and D. J. Summers and Claudio Campagnari and Carlo Dallapiccola and Dmytro Kovalskyi and Jeffrey Richman and Christopher West and A. M. Eisner and Juergen Kroseberg and William Stephen Lockman and A. J. Martinez and Bruce A. Schumm and Abraham Seiden and Daniel S. Chao and C. H. Cheng and Bertrand Echenard and Kevin T. Flood and David G. Hitlin and Piti Ongmongkolkul and F. C. Porter and Alexander Rakitin and Rune Andreassen and Zachary Huard and Brian T. Meadows and Michael Sokoloff and Langqiu F. Sun and P. C. Bloom and William T. Ford and Alessandro Gaz and Uriel Nauenberg and James G. Smith and Sean Robert Wagner and R. Ayad and Walter H. Toki and Bernhard Spaan and K. R. Schubert and F. Le Diberder and Denis Bernard and Marc Verderi and Philip James Clark and Alessandro Pistone and Daniela Bettoni and Concezio Bozzi and Raffaella Calabrese and Gianluigi Cibinetto and E. Fioravanti and Isabella Garzia and Eleonora Luppi and Mauro Munerato and Matteo Negrini and Luigi Piemontese and Valeria Santoro and Rinaldo Baldini-Ferroli and A. Calcaterra and Riccardo de Sangro and Gaetano Finocchiaro and Piero Patteri and Ida Marena Peruzzi and Mauro Piccolo and M. Venkata Rama and Abrar Ahmad Zafar and George Gee Jackson and Elisa Guido and Maurizio Lo Vetere and M. R. Monge and Stefano Passaggio and Claudia Patrignani and Enrico Robutti and B. Bhuyan and V. Prasad and C. L. Lee and Masahiro Morii and Adam J. Edwards and Aleksandra Adametz and Ulrich Uwer and H. Lacker and Tobias L{\"u}ck and P. D. Dauncey and P. K. Behera and Usha Mallik and C. H. K. Chen and James H Cochran and W. T. Meyer and Soeren Prell and Alan E. Rubin and Andrei Gritsan and Z. J. Guo and Nicolas Arnaud and M. Davier and Dmytro Derkach and Gilbert Grosdidier and A. M. Lutz and Bogdan Malaescu and Patrick Roudeau and Marie Helene Schune and Achille Stocchi and G{\'e}rard Wormser and David J. Lange and Douglas Michael Wright and Carlos A. Ch{\'a}vez and Jonathon P. Coleman and John R. Fry and Erwin Gabathuler and D. Hutchcroft and david. j. payne and C. Touramanis and Alessandra Betti and Francesca di Lodovico and Riccardo Sacco and Michael Sigamani and Greig Cowan and Christopher L. Davis and Achim G. Denig and M. Fritsch and Wolfgang Gradl and Konrad Griessinger and Alexander Hafner and Elisabetta Prencipe and Rebecca Jo Barlow and Gil Jackson and George Lafferty and E. Behn and Riccardo Cenci and Brian Hamilton and Abolhassan Jawahery and D. A. Roberts and Ray Cowan and Dinko Dujmi{\'c} and Gabriella Sciolla and Rouba Cheaib and Dana M Lindemann and Pradip R. Patel and Steven Hugh Robertson and Pietro Biassoni and Nicola Neri and F. Palombo and Simone Stracka and L. Cremaldi and R. Godang and Roland Kr{\"o}ger and Peter Sonnek and Frank Winklmeier and Xuan-Nghia Nguyen and Martin J. Simard and P. Taras and G. De Nardo and Diego Monorchio and Giovanni Onorato and Crisostomo Sciacca and Matteo Martinelli and G. Raven and Colin P. Jessop and Sw. Banerjee and Weitao Wang and Klaus Honscheid and Richard Kass and James Brau and R{\"u}diger Frey and Nikolai Sinev and Darrel Strom and Eric C. Torrence and Pablo del Amo Sanchez and Nicola Gagliardi and Martino Margoni and Stephane Monteil and M. Posocco and James Mwangi Kariuki and Gabriele Simi and Franco Simonetto and F. Simonetto and S. Akar and Eran Ben-Haim and Marco Bomben and G. R. Bonneaud and L. Teodorescu and Giovanni Calderini and J{\'e}r{\^o}me Chauveau and Olivier Hamon and Ph. Leruste and Gianpietro Marchiori and Jose Ocariz and Simon Sitt and Maurizio Biasini and Elisa Manoni and Michael Papenbrock and Alessandro Rossi and Corrado Angelini and Giacomo Batignani and Stefano Bettarini and Massimo Carpinelli and Giulia Casarosa and Alberto Cervelli and F. Forti and Mariano A. Giorgi and X. Lyu and Benjamin Oberhof and Eugenio Paoloni and Alberto Anibal P{\'e}rez and Gianfranco Rizzo and Joseph Walsh and D. Lopes Lopes Pegna and James Olsen and A. J. Stewart Smith and A. V. Telnov and Fabio Anulli and Riccardo Faccini and F. Ferrarotto and Fernando Ferroni and Mario Gaspero and L. Li Gioi and M. A. Mazzoni and Giovanni Piredda and C. Davis Buenger and Oliver Gr{\"u}nberg and Torsten Hartmann and Torsten Leddig and Henning Schroeder and Christian Vo{\ss} and Rolf Waldi and T. Adye and Emmanuel Olaiya and Fredrick Wilson and Stephane Emery and G. Hamel de Monchenault and Georges Vasseur and Ch. Y{\'e}che and David A. Aston and Deborah J. Bard and Rainer Bartoldus and Jose F Benitez and Concetta Cartaro and Mark R. Convery and J. Dorfan and G. P. Dubois-Felsmann and W. Dunwoodie and Matthias Ebert and R. C. Field and M. Franco Sevilla and Bryan Gregory Fulsom and David M. Strom and Mark Talmage Graham and Philippe Greni{\'e}r and Carsten Hast and Michael Kelsey and Phillip J Kim and Martin Kocian and David W.G.S. Leith and Pericles Samuel Bruce Lewis and B. E. Lindquist and S. Luitz and Vera Luth and Harvey Lee Lynch and D. MacFarlane and D. R. Muller and H. A. Neal and Silke Nelson and Matthew Perl and Teela Pulliam and Blair N. Ratcliff and Aaron Roodman and Andrei Salnikov and Rafe Hyam Schindler and Abigail Snyder and Alessandro Calandri and Michael K. Sullivan and Jaroslav Va'vra and Andrew Wagner and W. J. Wisniewski and Matthias Wittgen and Dennis H. Wright and H. W. Wulsin and Carolin C. Young and V. Ziegler and W. Park and M. V. Purohit and R. M. White and J. R. Wilson and Aidan Sean Randle-conde and Stephen Sekula and M. Douglass Bellis and Patricia R. Burchat and Tomonari S. Miyashita and Md. Shamsul Alam and Jerome A Ernst and R. Gorodeisky and Nurit Guttman and David Peimer and Avy Soffer and Patricia Lund and Stefan M Spanier and Jennifer Lundin Ritchie and Andrew Michael Ruland and R. F. Schwitters and Brenda C. Wray and J. M. Izen and Xuanhong Lou and Franco Nero Bianchi and D. Gamba and L. Lanceri and Lorenzo Vitale and Fernando Mart{\'i}nez-Vidal and Arantza Oyanguren and H. Ahmed and Justin Albert and Sun. Banerjee and H. H. F. Choi and G. J. King and Robert Victor Kowalewski and Małgorzata Lewczuk and Ian Michael Nugent and John Michael Roney and Randall J. Sobie and N. Tasneem and Timothy Gershon and Peter F. Harrison and P. F. Harrison and Eugenia Puccio and Henry R. Band and S. P. Venkata Dasu and Yutian Pan and Richard Prepost and Sau Lan Wu},
We present improved measurements of CP-violation parameters in the decays B^0→π^+π^-, B^0→K^+π^-, and B^0→π^0π^0, and of the branching fractions for B^0→π^0π^0 and B^0→K^0π^0. The results are obtained with the full data set collected at the Υ(4S) resonance by the BABAR experiment at the PEP-II asymmetric-energy B factory at the SLAC National Accelerator Laboratory, corresponding to (467±5)×10^6 BB pairs. We find the CP-violation parameter values and branching fractions: S_(π^+π^-)=-0.68±0.10±0… CONTINUE READING


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