A new implication for strong interactions if large, direct CP violation in Bbar^0(B^0) -> pi^+pi^- is confirmed

Details A new implication for strong interactions if large, direct CP violation in Bbar^0(B^0) -> pi^+pi^- is confirmed A new implication for strong interactions if large, direct CP violation in Bbar^0(B^0) -> pi^+pi^- is confirmed

2003-03-30

arxiv.org/abs/hep-ph/0303254v3

JHEP 0309:004,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, no figures

Scientific paper

10.1088/1126-6708/2003/09/004

We show that the large, direct CP-violation parameter $A_{\pi\pi}=-C_{\pi\pi}$, reported by the BELLE collaboration in the decays Bbar^0(B^0) -> \pi^+\pi^-, implies an unusual situation in which the presence of a very large difference between two strong-interaction phases ~ -110 deg. plays an essential role. We make the demonstration within a model of strong, two-body quasi-elastic interactions between physical hadrons. The model can accommodate a large difference between two strong-interaction phases, for which it provides a natural enhancement.

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