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Studies of Angular Correlations in the Decays $B^0_s\to J/\psi \phi$ by Using the SIMUB Generator

High Energy Physics - Phenomenology 2009-11-10 v1
Authors: A. Belkov , S. Shulga
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Abstract

The performance of the method of angular moments on the ΔΓs\Delta\Gamma_s determination from analysis of untagged decays Bs0(t),Bˉs0(t)→J/ψ(→l+l−)ϕ(→K+K−)B^0_s(t),\bar{B}^0_s(t)\to J/\psi (\to l^+l^-) \phi (\to K^+K^-) is examined by using the SIMUB generator. The results of Monte Carlo studies with evaluation of measurement errors are presented. The method of angular moments gives stable results for the estimate of ΔΓs\Delta\Gamma_s and is found to be an efficient and flexible tool for the quantitative investigation of the Bs0→J/ψϕB^0_s\to J/\psi \phi decay. The statistical error of the ratio ΔΓs/Γs\Delta\Gamma_s/\Gamma_s for values of this ratio in the interval [0.03, 0.3] was found to be independent on this value, being 0.015 for 10510^5 events.

Keywords

angular moments ΔΓ_s B^0_s decays SIMUB generator Monte Carlo

Cite

@article{arxiv.hep-ph/0310096,
  title  = {Studies of Angular Correlations in the Decays $B^0_s\to J/\psi \phi$ by Using the SIMUB Generator},
  author = {A. Belkov and S. Shulga},
  journal= {arXiv preprint arXiv:hep-ph/0310096},
  year   = {2009}
}

Comments

34 pages, 5 figures, accepted for publication in Comp. Phys. Comm. at 27/07/2003

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