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On the resonant and non-resonant contributions to B\toρπ

Jose A. Oller
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Abstract

We discuss the importance of the background in order to understand the scattering in the J^{PC}=0^{++} low and intermediate energy region and in particular regarding the σmeson. In order to appreciate better its importance we compare with the ρmeson in the P-wave ππscattering. We also point out that in present analyses of three-body heavy meson decays, like those of D^+ and B, the role of this background is still not properly settled although it happens to be considerably smaller.

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Jose A. Oller. 2003-06-30. On the resonant and non-resonant contributions to B\toρπ. https://arxiv.org/abs/hep-ph/0306294

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