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Measuring the CP Violating Phase in Bs Mixing Using Bs -> J/\psi f_0(980)

High Energy Physics - Experiment 2009-10-01 v2 High Energy Physics - Phenomenology
Authors: Sheldon Stone , Liming Zhang
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Abstract

We show that the decay Bs -> J/psi f0(980), f0(980)->pi+ pi- can be used to measure the CP violating phase in Bs mixing, -2\beta_s, and estimate the sensitivity as +/- 0.050 rad, for 2/fb of LHCb data. After adding in the related Bs -> J/psi eta', \eta' -> rho gamma mode, the sensitivity improves to +/- 0.044 rad. Use of these CP eigenstates obviates the need for a transversity analysis that must be used in the case of Bs -> J/psi phi decays.

Keywords

CP violation Bs mixing Bs → J/ψ f0(980) LHCb CP violating phase transversity analysis

Cite

@article{arxiv.0909.5442,
  title  = {Measuring the CP Violating Phase in Bs Mixing Using Bs -> J/\psi f_0(980)},
  author = {Sheldon Stone and Liming Zhang},
  journal= {arXiv preprint arXiv:0909.5442},
  year   = {2009}
}

Comments

30 pages 22 figures

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