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Lees, J. P. [Author]; Poireau, V. [Author]; Lee, M. J. [Author]; Morii, M. [Author]; Adametz, A. [Author]; Uwer, U. [Author]; Lacker, H. M. [Author]; Dauncey, P. D. [Author]; Mallik, U. [Author]; Chen, C. [Author]; Cochran, J. [Author]; Meyer, W. T. [Author]; Prell, S. [Author]; Lynch, G. [Author]; Ahmed, H. [Author]; Gritsan, A. V. [Author]; Arnaud, N. [Author]; Davier, M. [Author]; Derkach, D. [Author]; Grosdidier, G. [Author]; Le Diberder, F. [Author]; Lutz, A. M. [Author]; Malaescu, B. [Author]; Roudeau, P. [Author]; [...]

Evidence for the decay B0→ωω and search for B0→ωϕ

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  • Media type: E-Article
  • Title: Evidence for the decay B0→ωω and search for B0→ωϕ
  • Contributor: Lees, J. P. [Author]; Poireau, V. [Author]; Lee, M. J. [Author]; Morii, M. [Author]; Adametz, A. [Author]; Uwer, U. [Author]; Lacker, H. M. [Author]; Dauncey, P. D. [Author]; Mallik, U. [Author]; Chen, C. [Author]; Cochran, J. [Author]; Meyer, W. T. [Author]; Prell, S. [Author]; Lynch, G. [Author]; Ahmed, H. [Author]; Gritsan, A. V. [Author]; Arnaud, N. [Author]; Davier, M. [Author]; Derkach, D. [Author]; Grosdidier, G. [Author]; Le Diberder, F. [Author]; Lutz, A. M. [Author]; Malaescu, B. [Author]; Roudeau, P. [Author]; [...]
  • imprint: Soc., 2014
  • Published in: Physical review / D 89(5), 051101 (2014). doi:10.1103/PhysRevD.89.051101
  • Language: English
  • DOI: https://doi.org/10.1103/PhysRevD.89.051101
  • ISSN: 1550-7998; 1550-2368; 0556-2821; 1089-4918
  • Origination:
  • Footnote: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
  • Description: We describe searches for B meson decays to the charmless vector-vector final states ωω and ωϕ with 471×106BB¯ pairs produced in e+e− annihilation at s√=10.58 GeV using the BABAR detector at the PEP-II collider at the SLAC National Accelerator Laboratory. We measure the branching fraction B(B0→ωω)=(1.2±0.3+0.3−0.2)×10−6, where the first uncertainty is statistical and the second is systematic, corresponding to a significance of 4.4 standard deviations. We also determine the upper limit B(B0→ωϕ)<0.7×10−6 at 90% confidence level. These measurements provide the first evidence for the decay B0→ωω, and an improvement of the upper limit for the decay B0→ωϕ.
  • Access State: Open Access