Partial waves of baryon–antibaryon in three-body B meson decay

doi:10.1088/0954-3899/34/2/009

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Journal of Physics G: Nuclear and Particle Physics

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Journal of Physics G: Nuclear and Particle Physics Volume 34 Number 2 Create an alert RSS this journal

Mahiko Suzuki 2007 J. Phys. G: Nucl. Part. Phys. 34 283 doi:10.1088/0954-3899/34/2/009

Partial waves of baryon–antibaryon in three-body B meson decay

Mahiko Suzuki

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Abstract References Cited By

The conspicuous threshold enhancement has been observed in the baryon–antibaryon subchannels of many three-body B decay modes. By examining the partial waves of baryon–antibaryon, we first show for $B^{\pm}\to p\overline{p}K^{\pm}$ that the pK^± angular correlation rules out dominance of a single $p\overline{p}$ partial wave for the $p\overline{p}$ enhancement, for instance, the resonance hypothesis or the strong final-state interaction in a single channel. The measured pK^± angular correlation turns out to be opposite to the theoretical expectation of a simple short-distance picture. We study the origin of this reversed angular correlation in the context of the $p\overline{p}$ partial waves and argue that $N\overline{N}$ bound states may be the cause of this sign reversal. Dependence of the angular correlation on the $p\overline{p}$ invariant mass is important for probing the underlying issue from the experimental side.