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Measurement of time-dependent CP asymmetries and the CP-Odd fraction in the decay B0→D*+D*

  • B. Aubert
  • , R. Barate
  • , D. Boutigny
  • , F. Couderc
  • , Y. Karyotakis
  • , J. P. Lees
  • , V. Poireau
  • , V. Tisserand
  • , A. Zghiche
  • , E. Grauges
  • , A. Palano
  • , M. Pappagallo
  • , A. Pompili
  • , J. C. Chen
  • , N. D. Qi
  • , G. Rong
  • , P. Wang
  • , Y. S. Zhu
  • , G. Eigen
  • , I. Ofte
  • B. Stugu, G. S. Abrams, M. Battaglia, A. B. Breon, D. N. Brown, J. Button-Shafer, R. N. Cahn, E. Charles, C. T. Day, M. S. Gill, A. V. Gritsan, Y. Groysman, R. G. Jacobsen, R. W. Kadel, J. Kadyk, L. T. Kerth, Yu G. Kolomensky, G. Kukartsev, G. Lynch, L. M. Mir, P. J. Oddone, T. J. Orimoto, M. Pripstein, N. A. Roe, M. T. Ronan, W. A. Wenzel, M. Barrett, K. E. Ford, T. J. Harrison, A. J. Hart, C. M. Hawkes, S. E. Morgan, A. T. Watson, M. Fritsch, K. Goetzen, T. Held, H. Koch, B. Lewandowski, M. Pelizaeus, K. Peters, T. Schroeder, M. Steinke, J. T. Boyd, J. P. Burke, N. Chevalier, W. N. Cottingham, M. P. Kelly, T. Cuhadar-Donszelmann, B. G. Fulsom, C. Hearty, N. S. Knecht, T. S. Mattison, J. A. McKenna, A. Khan, P. Kyberd, M. Saleem, L. Teodorescu, A. E. Blinov, V. E. Blinov, A. D. Bukin, V. P. Druzhinin, V. B. Golubev, E. A. Kravchenko, A. P. Onuchin, S. I. Serednyakov, Yu I. Skovpen, E. P. Solodov, A. N. Yushkov, D. Best, M. Bondioli, M. Bruinsma, M. Chao, I. Eschrich, D. Kirkby, A. J. Lankford, M. Mandelkern, R. K. Mommsen, W. Roethel, D. P. Stoker
  • Laboratoire de Physique des Particules
  • University of São Paulo
  • Università degli studi di Bari Aldo Moro
  • Institute of High Energy Physics, Chinese Academy of Sciences
  • University of Bergen
  • University of California, Berkeley
  • University of Birmingham
  • Ruhr-University Bochum
  • University of Bristol
  • University of British Columbia
  • Brunel University London
  • Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
  • Long Beach VA and University of California

Résultats de recherche: Contribution à un journalArticleRevue par des pairs

Résumé

We present an updated measurement of time-dependent CP asymmetries and the CP-odd fraction in the decay B0→D*+D*- using 232×106BB» pairs collected by the BABAR detector at the SLAC PEP-II B factory. We determine the CP-odd fraction to be 0.125±0. 044(stat)±0.007(syst). The time-dependent CP asymmetry parameters C+ and S+ are determined to be 0.06±0.17(stat)±0. 03(syst) and -0.75±0.25(stat)±0.03(syst), respectively. The standard model predicts these parameters to be 0 and -sinâ□¡2Î, respectively, in the absence of penguin amplitude contributions.

langue originaleAnglais
Numéro d'article151804
journalPhysical Review Letters
Volume95
Numéro de publication15
Les DOIs
étatPublié - 7 oct. 2005
Modification externeOui

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