English

Study of B+- --> D_CP K+- and D^*_CP K+- decays

High Energy Physics - Experiment 2019-08-14 v3

Abstract

We report a study of the modes D_CP K+- and D^*_CP K+- where D^(*) decays to CP eigenstates. The data sample used contains 275 x 10^6 BB events at the Upsilon(4S) resonance collected by the Belle detector at the KEKB energy-asymmetric e^+ e^- collider. The CP asymmetries obtained for D_CP K are: A_1 = 0.06 +- 0.14 (stat) +- 0.05 (sys), A_2 = -0.12 +- 0.14 (stat) +- 0.05 (sys) and for D^*_CP K : A_1^* = -0.20 +- 0.22 (stat) +- 0.04 (sys), A_2^* = 0.13 +- 0.30 (stat) +- 0.08 (sys).

Keywords

Cite

@article{arxiv.hep-ex/0601032,
  title  = {Study of B+- --> D_CP K+- and D^*_CP K+- decays},
  author = {K. Abe},
  journal= {arXiv preprint arXiv:hep-ex/0601032},
  year   = {2019}
}

Comments

10 pages, 7 figures, submitted to Phys.Rev.D (Rapid Communications)