CP Asymmetries in B to f_0 K_S Decays

Details CP Asymmetries in B to f_0 K_S Decays CP Asymmetries in B to f_0 K_S Decays

2008-05-14

arxiv.org/abs/0805.1963v2

Phys.Rev.D78:034021,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

27 pages, 10 figures, references added

Scientific paper

10.1103/PhysRevD.78.034021

We consider the branching ratio and the CP asymmetries in B to f_0(980)K_S decay to the end of determining the deviation of the time-dependent CP asymmetry from sin(2 beta) arising from Standard Model physics. We obtain Delta S_{f_0 K_S} within the context of the QCD factorization framework for the B to f_0(980)K_S decay amplitudes assuming the f_0(980) is a q\bar{q} state and employing a random scan over the theoretical parameter space to assess the possible range in Delta S_{f_0 K_S}. Imposing the value of the experimental branching ratio within 1 sigma and 3 sigma, respectively, of its central value as a constraint, we find the range of Delta S_{f_0 K_S} to be [0.018, 0.033] for a scan in which the parameters are allowed to vary within 1 sigma of their central values and the range [-0.019, 0.064] for a scan in which the parameters vary within 3 sigma of their central values.

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