Finding
Although the difference is generally less than $10\%$ for tensor and vector resonances, it can be as large as $(25-40)\%$ for scalar resonances.
Paper
Width effects in resonant three-body $B$ decays.
Abstract
For three-body $B$ decays mediated by intermediate resonances, we show how to properly extract the quasi-two-body decay rates for a meaningful comparison with the corresponding theoretical estimates. We compute the correction factor from finite width effects in the QCD factorization approach, and make a comparison with that using the experimental parameterization in which the momentum dependence in the weak dynamics is absent. Although the difference is generally less than $10\%$ for tensor and vector resonances, it can be as large as $(25-40)\%$ for scalar resonances.
Authors
Hai-Yang Cheng, C. Chiang, C. Chua
Journal
arXiv: High Energy Physics - Phenomenology
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