PentaquarkΘ+production viaγN→K¯*Θ+(3/2±)

2005/08/31 by Seung-il Nam, Seung-Il Nam, Atsushi Hosaka +1 · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1103/physrevc.74.025204

published as Phys.Rev.C74:025204,2006 · 12 pages, 21 figures. Accepted for publication in Physical Review C

arxiv created 2006/07/04 · openalex publication_date 2006/08/18 · arxiv updated 2009/12/01 · openalex created_date 2019/04/25 · openalex updated_date 2026/07/28

Abstract

We study the photoproduction of the exotic pentaquark \ensuremathΘ⁺ baryon with the vector kaon, assuming that the quantum numbers of the \ensuremathΘ⁺ to be J^P=3/2^\ifmmode±\else\textpm\fi and J^P=1/2⁺. Scalar meson \ensuremathκ(800) exchange is also taken into account. In contrast with the \ensuremathγN\ensuremath→K\ensuremathΘ⁺(3/2^\ifmmode±\else\textpm\fi) process, the large suppression from the proton target is not observed in the total cross sections. We also suggest a method to determine which meson exchange is the most dominant by analyzing the polarizations of incident photon and outgoing K^*. We find that \ensuremathκ exchange turns out to be prominent when the polarizations of the photon and K^* are aligned to be parallel, whereas K exchange predominates when they are perpendicular to each other.

Citations

• Experimental search for pentaquarks
• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)

Cited by

• Test of the reaction mechanism forγN→KΛ(1520)using the polarized photon