Study of Time-Dependent CP Asymmetries with Partial Reconstruction of B -> D*+ pi-

The BABAR Collaboration; B. Aubert

Study of Time-Dependent CP Asymmetries with Partial Reconstruction of B -> D*+ pi-

High Energy Physics - Experiment 2007-05-23 v1

Authors: The BABAR Collaboration , B. Aubert

Abstract

We present a preliminary measurement of the time-dependent CP asymmetries in decays of neutral B mesons to the final states D*pi using approximately 82 million BBbar events collected by the BaBar experiment at the PEPII storage ring. Events containing these decays are selected with a partial reconstruction technique, in which only the high momentum pion and the low momentum pion from the D* decay are reconstructed. The flavor of the other B meson in the event is tagged using the information from kaon and lepton candidates. We measure the time-dependent CP asymmetry A = -0.063 +/- 0.024 (stat.) +/- 0.017 (syst.). We interpret these results in terms of the angles of the unitarity triangle to set a bound on |sin(2 beta + gamma)|.

Keywords

time-dependent CP asymmetry B meson partial reconstruction unitarity triangle BaBar

Cite

@article{arxiv.hep-ex/0307036,
  title  = {Study of Time-Dependent CP Asymmetries with Partial Reconstruction of B -> D*+ pi-},
  author = {The BABAR Collaboration and B. Aubert},
  journal= {arXiv preprint arXiv:hep-ex/0307036},
  year   = {2007}
}

Comments

27 pages, 11 encapsulated postscript figues, submitted to EPS2003

Study of Time-Dependent CP Asymmetries with Partial Reconstruction of B -> D*+ pi-

Abstract

Keywords

Cite

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