Angular distribution and azimuthal asymmetry for pentaquark production in proton-proton collisions

Abstract

Angular distributions for production of the ${\Theta }^{+}$ pentaquark are calculated for the collisions of polarized protons with polarized target protons. We compare calculations based on different assumptions concerning spin and parity ($J=1/2^{\pm },3/2^{\pm }$) of the ${\Theta }^{+}$ state. For a wide class of interactions the spin correlation parameters describing the asymmetric angular distributions are calculated up to 250 MeV above production threshold. The deviations from the near threshold behavior are investigated.

8 pages, 5 figures

References in corpus (22)

• Evidence for Narrow S=+1 Baryon Resonance in Photo-production from Neutron
• Exotic Anti-Decuplet of Baryons: Prediction from Chiral Solitons
• Observation of an Exotic $S=+1$ Baryon in Exclusive Photoproduction from the Deuteron
• Observation of a baryon resonance with positive strangeness in K+ collisions with Xe nuclei
• Evidence for the positive-strangeness pentaquark ${\Theta }^{+}$ in photoproduction with the SAPHIR detector at ELSA
• Observation of an Exotic Baryon with S=+1 in Photoproduction from the Proton
• Evidence for a narrow |S|=1 baryon state at a mass of 1528 MeV in quasi-real photoproduction
• Evidence for a narrow baryonic state decaying to K0s-p and K0s-pbar in deep inelastic scattering at HERA
• 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
• Pentaquark hadrons from lattice QCD
• Cascade production from antikaon induced reactions on lambda and sigma
• A Method to Unambiguously Determine the Parity of the Theta+ Pentaquark
• Cross sections for pentaquark baryon production from protons in reactions induced by hadrons and photons
• 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
• Properties of baryon anti-decuplet
• Pentaquark ${\Theta }^{+}$ production from the reaction $\gamma p\to {\pi }^{+}{K}^{-}{\Theta }^{+}$
• On the determination of the parity of the ${\Theta }^{+}$
• Photoproduction of ${\Theta }^{+}$ and other pentaquark states
• Threshold production of the ${\Theta }^{+}$ in a polarized proton reaction
• A possibility to determine the P-parity of the ${\Theta }^{+}$ pentaquark in the $pn\to {\Lambda }^0{\Theta }^{+}$ reaction
• Possible methods for the determination of the $P$-parity of the ${\Theta }^{+}$-pentaquark in NN-collisions