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

Abstract

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- -->pp-bar K- that the pK- angular correlation rules out dominance of a single pp-bar partial wave for the 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 naive expectation of the short-distance picture. We study the origin of this reversed angular correlation in the context of the pp-bar partial waves and argue that NN-bar bound states may be the cause of this sign reversal. Dependence of the angular correlation on the pp-bar invariant mass is very important to probe the underlying problem from the experimental side.

arXiv comment16 pages, 9 figures, the version for journal publication

References in corpus (21)

• Observation of a near-threshold enhancement in th p pbar mass spectrum from radiative J/psi-->gamma p pbar decays
• Observation of a resonance X(1835) in J/ψ--> γπ^+ π^- η^{\prime}
• Near threshold enhancement of the ppbar mass spectrum in J/Psi decay
• One-pion-exchange final-state-interaction and the pbar p near threshold enhancement in J/psi -> gamma pbar p decays
• Pathways to Rare Baryonic B Decays
• Observation of B0bar --> D(*)0 p pbar
• Low-Mass Baryon-Antibaryon Enhancements in B Decays
• Charmless Exclusive Baryonic B Decays
• Observation of B+ -> p pbar pi+, B0 -> p pbar K0, and B+ -> p pbar K*+
• Observation of B+ to Lambda Lambdabar K+
• Study of the Baryon-Antibaryon Low-Mass Enhancements in Charmless Three-body Baryonic B Decays
• Observation of B0 to p Lambdabar pi-
• Model-independent view on the low-mass proton-antiproton enhancement
• ppbar enhancement in B and J/Psi decay
• Charmful Baryonic B Decays ${\bar{B}}^0\to {\Lambda }_c\bar{p}$ and $\bar{B}\to {\Lambda }_c\bar{p}\pi (\rho )$
• Possible Hints and Search for Glueball Production in Charmless Rare B Decays
• Study of Exclusive B decays to Charmed Baryons
• Exclusive Baryonic B Decays Circa 2005
• A Study of the Rare Decays $B^0\to D_s^{(\ast )+}{\pi }^{-}$ and $B^0\to D_s^{(\ast )-}{K}^{+}$
• Three-Body Charmful Baryonic B Decays $\bar{B}\to D(D^{\ast })N\bar{N}$
• Hadronic B Decays to Charmed Baryons

Cited by in corpus (29)

• The Physics of the B Factories
• Study of the decay mechanism for B+ to p pbar K+ and B+ to p pbar pi+
• Study of B+ to p Lambdabar gamma, p Lambdabar pi0 and B0 to p Lambdabar pi-
• Charmful Three-body Baryonic B decays
• Near Threshold Enhancement of p pbar System and p pbar Elastic Scattering
• Charmless Hadronic B-Meson Decays
• Evidence for CP violation in $B^{+}\to p\bar{p}{K}^{+}$ decays
• Observation of B0 to Lambda Lambdabar K0 and B0 to Lambda Lambdabar K*0 at Belle
• Rescattering Effect and Near Threshold Enhancement of $p\bar{p}$ System
• Testing the W-exchange mechanism with two-body baryonic B decays
• Direct CP violation in internal W-emission dominated baryonic B decays
• Observation of B- to pbar Lambda D0 at Belle
• Near threshold ppbar enhancement in the J/psi -> omega ppbar decay
• $N\bar{N}$ Scattering at NLO Order in An Effective Theory
• Baryonic $B$ meson decays
• Charmful baryonic B\to {\bf B\bar B'}M_c decays
• Higher twist corrections to doubly-charmed baryonic $B$ decays
• The proton-antiproton mass threshold structure in psi(3686) radiative decay revisited
• Study of $B^{-}\to \Lambda \bar{p}{\eta }^{{(}^{\prime })}$ and ${\bar{B}}_s^0\to \Lambda \bar{\Lambda }{\eta }^{{(}^{\prime })}$ decays
• Study of the decay ${\bar{B}}^0\to {\Lambda }_c^{+}\bar{p}{\pi }^{+}{\pi }^{-}$ and its intermediate states
• Four-body baryonic $B\to {\mathbf{B}}_1{\bar{\mathbf{B}}}_1^{\prime }{\mathbf{B}}_2{\bar{\mathbf{B}}}_2^{\prime }$ decays
• Search for the decay mode $B^0\to pp\bar{p}\bar{p}$
• Search for the decay ${\overline{B}}^0\to {\Lambda }_{\mathrm{c}}^{+}\overline{p}p\overline{p}$
• Observation of the baryonic decay ${\bar{B}}^0\to {\Lambda }_c^{+}\bar{p}{K}^{-}{K}^{+}$
• Angular asymmetries in $B\to \Lambda \bar{p}M$ decays
• B decays to baryons
• Hidden charm ${\mathcal{P}}_{cs}(4338{)}^0$ production in baryonic $B^{-}\to J/\psi \Lambda \bar{p}$ decay
• Hadronic rescattering to solve helicity puzzle in $B^{+}\to p\bar{p}{\pi }^{+}(K^{+})$ decays
• Observation of the decay $B_s^0\to K^{0}p\bar{p}$ and measurement of the $B_{(s)}^0\to K^{0}p\bar{p}$ branching fractions