Determination of the parity of the pentaquark baryons : Theta^+ and Xi_5

Abstract

We study determination of the parity of the pentaquark baryons in two different processes. First, we investigate the Theta^+ production via the vec{p} vec{p} -> Sigma^+ Theta^+ reaction process which was proposed to determine unambiguously the parity of Theta^+. We observe the clear differences in the total cross sections and the spin observable A_{xx}. As for the Xi_5 in the bar{K} N -> K Xi_5 reaction process, the total cross section for the positive parity presents about one hundred times lager than that of the negative one due to the huge destructive interference.

5 pages, 8 figures, Talk given at International Workshop on BARYONS04, Ecole polytechnique, Paris, France, 25-29 Oct 2004

References in corpus (5)

• Observation of an Exotic S = -2, Q = -2 Baryon Resonance in Proton-Proton Collisions at the CERN SPS
• A Method to Unambiguously Determine the Parity of the Theta+ Pentaquark
• How to measure the parity of the ${\Theta }^{+}$ in $\vec{p}\vec{p}$ collisions
• Properties of baryon anti-decuplet
• Threshold production of the ${\Theta }^{+}$ in a polarized proton reaction

Cited by in corpus (1)

• Heavy Pentaquarks in the Diquark Model and the Large N_c Expansion