On the search for a narrow penta-quark Z${}^{+}$ baryon in NN interactions

Abstract

The possibility for an observation of a narrow penta-quark $Z^{+}$ baryon in $NN$ reactions is discussed. It is shown that the $pp\to n{\Sigma }^{+}{K}^{+}$ reaction at excess energies around 100 MeV above threshold provides optimal conditions for $Z^{+}$ baryon detection by an analysis of the $n{K}^{+}$ invariant mass spectrum, if the $Z^{+}$ mass is located around 1.5 GeV involving a rather narrow width.

5 pages, espcrc2, including 3 ps-figures

Cited by in corpus (24)

• Evidence for Narrow S=+1 Baryon Resonance in Photo-production from Neutron
• Evidence for a narrow resonance at 1530 MeV/c2 in the K0 p - system of the reaction pp --> Sigma+ K0 p from the COSY-TOF experiment
• Interpretation of the Theta+ as an isotensor pentaquark with weakly decaying partners
• Influence of a Z+(1540) resonance on K+N scattering
• Exotic Theta^+ baryon production induced by a photon and a pion
• Cross sections for pentaquark baryon production from protons in reactions induced by hadrons and photons
• Pentaquark Theta^+(1540) production in gamma N --> K Anti-K N
• Pentaquark baryons in SU(3) quark model
• Determination of the ${\Theta }^{+}$ parity from $\gamma n\to K^{-}{K}^{+}n$
• How to measure the parity of the ${\Theta }^{+}$ in $\vec{p}\vec{p}$ collisions
• Improved study of a possible Theta+ production in the pp -> p K0 sigma+ reaction with the COSY-TOF spectrometer
• Time delayed K+ N reactions and exotic baryon resonances
• Theta^+ baryon production in KN and NN reactions
• Properties of baryon anti-decuplet
• ${\gamma }^{\ast }N\to N(1710)$ transition at high momentum transfer
• An explanation why the Theta+ is seen in some experiments and not in others
• The effect of the in-medium ${\Theta }^{+}$ pentaquark on the kaon optical potential
• On the determination of the parity of the ${\Theta }^{+}$
• A possible explanation why the Theta+ is seen in some experiments and not in others
• Investigating the parity of the exotic Theta^+ baryon from the kaon photoproduction
• Comparative Regge analysis of $\Lambda ,{\Sigma }^0,\Lambda (1520)$ and ${\Theta }^{+}$ production in $\gamma p$, $\pi p$ and $pp$ reactions
• Spin asymmetries in gamma + N --> K*bar + Theta^+
• Threshold production of the ${\Theta }^{+}$ in a polarized proton reaction
• Production of the pentaquark ${\Theta }^{+}$ in $np$ scattering