Pentaquark, cusp and rescattering in single kaon photoproduction off deuterium

Abstract

In very well defined part of the phase space, $KN$ and $\Lambda N$ rescattering depend on on-shell elementary matrix elements and on the low momentum components of the deuteron wave function. This provides us with the unique opportunity to study details in the scattering amplitudes that may have escaped the analysis of reactions induced on a nucleon target by Kaon and Hyperon beams at low energies. When folded with a typical experimental mass resolution, a narrow state with a width of 1 MeV would contribute by no more than 10% to the $KN$ mass spectrum. On the contrary, a cusp would be easily detected near the $\Sigma$ production threshold in the $\Lambda N$ mass spectrum.

arXiv comment7 pages; 7 figures Updated version after referees' review. Main changes: 1- The contribution of positive parity pentaquark has also been considered; 2- Figure 5 has been added. It shows the expected angular distributions of the contribution of a positive or negative parity pentaquark; 3- Units in Figure 4 and 7 have been updated; 4- The reference list has been updated

References in corpus (15)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Evidence for Narrow S=+1 Baryon Resonance in Photo-production from Neutron
• Soft-core hyperon-nucleon potentials
• Observation of an Exotic $S=+1$ Baryon in Exclusive Photoproduction from the Deuteron
• Differential Cross Sections for gamma + p --> K+ + Y for Lambda and Sigma0 Hyperons
• Femtometer Toroidal Structures in Nuclei
• K+ nucleon scattering and exotic S=+1 Baryons
• Experimental Limits on the Width of the Reported Theta(1540)+
• Influence of a Z+(1540) resonance on K+N scattering
• The electro-disintegration of few body systems revisited
• Search for the Theta+ pentaquark in the gamma d -> Lambda n K+ reaction measured with CLAS
• Interaction effects in ${\mathbf{K}}^{+}$ photoproduction on the deuteron
• Rescattering in Meson Photoproduction off Few Body Systems
• Photoproduction of the Theta^+ resonance on the nucleon in a Regge model
• Production of Theta+ in gamma + D -> Lambda + Theta+ and gamma + D -> Sigma + Theta+ reactions

Cited by in corpus (5)

• Charmed meson rescattering in the reaction pbar d to D Dbar N
• Differential cross section of gamma n to K+ Sigma- on bound neutrons with incident photons from 1.1 to 3.6 GeV
• Lambda-N scattering length from the reaction gamma d -> K^+ Lambda n
• Kaon photoproduction from the deuteron in a Regge-plus-resonance approach
• Study of the Hyperon-Nucleon Interaction via Final-State Interactions in Exclusive Reactions