Suppression of Theta^+(J^P=3/2^(+,-)) photoproduction from the proton

Abstract

We investigate the photoproduction of Theta^+ from the proton and neutron, gamma N -> Kbar Theta^+. Assuming that spin and parity of Theta^+ are J^P = 3/2^(+,-), it is shown that the production from the proton is strongly suppressed as compared with that from the neutron. This could provide a possible explanation for the null results of the recent CLAS experiment in finding Theta^+ via the reaction gamma p -> Kbar^0 Theta^+.

4 pages, 11 figures

References in corpus (10)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Evidence for Narrow S=+1 Baryon Resonance in Photo-production from Neutron
• Exotic Anti-Decuplet of Baryons: Prediction from Chiral Solitons
• Gauge-invariant tree-level photoproduction amplitudes with form factors
• Photoproduction of Theta baryon from the neutron
• Pentaquark Symmetries, Selection Rules and another potentially Narrow State
• Decay of Theta+ in a quark model
• Phenomenology of spin 3/2 baryons with pentaquarks
• Chiral perturbation theory for pentaquark baryons and its applications
• Photoproduction and Radiative Decay of Spin 1/2 and 3/2 Pentaquarks

Cited by in corpus (15)

• Evidence of the Θ^+ in the γd \to K^+K^-pn reaction
• Search for the ${\Theta }^{+}$ pentaquark in the reaction $\gamma d\to p{K}^{-}{K}^{+}n$
• Search for the ${\Theta }^{+}$ pentaquark in the reactions $\gamma p\to {\bar{K}}^0{K}^{+}n$ and $\gamma p\to {\bar{K}}^0{K}^{0}p$
• The role of the $N^{\ast }(2080)$ resonance in the $\vec{\gamma }p\to K^{+}\Lambda (1520)$ reaction
• A new $N^{\ast }(1675)$ resonance in the $\gamma N\to \eta N$ reaction
• Near-threshold photoproduction of $\Lambda (1520)$ from protons and deuterons
• Re-analysis of the $\Lambda (1520)$ photoproduction reaction
• Test of the reaction mechanism for gamma N -> K Lambda(1520) using the polarized photon
• eta photoproduction and N* resonances
• Search for ${\Theta }^{++}$ Pentaquarks in the Exclusive Reaction $\gamma p\to K^{+}{K}^{-}p$
• Constraining the Kahler Moduli in the Heterotic Standard Model
• Testing the bootstrap constraints in the strange sector
• Pentaquark Theta^+ production via gamma N ->K^*bar Theta^+(3/2^(+-))
• Producing $\Lambda (1405)$ and $\Lambda (1520)$ in ${\pi }^{-}p$ reaction to explore their inner structures
• Heavy Pentaquarks in the Diquark Model and the Large N_c Expansion