Possible methods for the determination of the P-parity of the Θ+-pentaquark in NN-collisions

2004/01/22 by M.P. Rekalo, Michail P. Rekalo, E. Tomasi‐Gustafsson +1 · 11 citations
Chemistry · Mathematics · Physics and Astronomy · #Baryon #Chemistry #Correlation coefficient #High-Energy Particle Collisions Research #Hyperon #Mathematics #Nuclear physics #Nuclear physics research studies #Nucleon #Observable #Parity (physics) #Particle physics #Pentaquark #Physics #Polarization (electrochemistry) #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Statistics #hep-ph

paper · pdf · doi:10.1016/j.physletb.2004.04.041

published in Physics Letters B 591(3-4), 225-228 (Elsevier BV) · 7 pages, 1 figure

arxiv created 2004/01/22 · openalex publication_date 2004/05/30 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We present two possibilities to determine the P-parity of the pentaquark Θ⁺, in a model independent way, via the measurement of polarization observables in p+p→ Θ⁺ +Σ⁺, or n+p→ Θ⁺ +Λ⁰, in the near threshold region. Besides the measurement of the spin correlation coefficient, A_xx=A_yy, (in collisions of transversally polarized nucleons), the coefficient D_xx of polarization transfer from the initial proton to the final Σ⁺(Λ⁰) hyperon is also unambiguously related to the Θ⁺ parity.

Citations

• Review of particle properties
• Review of Particle Physics

Cited by

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