Room for an S = +1 pentaquark in K^+ - nucleus phenomenology

Abstract

Evidence for excitation of exotic S=+1 pentaquark degrees of freedom is presented by studying optical-potential fits to K^+ - nucleus total, reaction and elastic-differential cross section data at p(lab) = 500 - 700 MeV/c. Estimates of the underlying two-nucleon absorption K^+ n N --> Theta^+ N reaction cross section are made and are used for discussing the anticipated cross section of the strangeness exchange reaction K^+ N --> pi Theta^+.

arXiv commentPaper extending the results and discussion of Phys. Rev. Lett. 94, 072301 (2005), nucl-th/0411052 v3. Tables interchanged. References updated

References in corpus (10)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Diquarks and Exotic Spectroscopy
• A Diquark-Triquark Model for the KN Pentaquark
• Experimental Limits on the Width of the Reported Theta(1540)+
• New results on the limit for the width of the exotic Theta^+ resonance
• The pentaquark in K-plus-d total cross section data
• Pion Cloud Contribution to K+ Nucleus Scattering
• Analysis of Theta^+ production in K^+Xe collisions
• Medium effects in K^+ nuclear interactions
• Medium effects in K^+ nucleus interaction from consistent analysis of integral and differential cross sections

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• Strangeness in Nuclei and Neutron Stars
• Medium effects in proton-induced $K^0$ production at 3.5 GeV
• The effect of the in-medium ${\Theta }^{+}$ pentaquark on the kaon optical potential
• Partial-wave analysis of $K^{+}$ nucleon scattering
• The Winfree model with heterogeneous phase-response curves: Analytical results
• Search for Higher Flavor Multiplets in Partial Wave Analyses
• MESON2016 -- Concluding Remarks
• Strange Exotic States and Compact Stars
• $K^{+}$-nucleus potentials from $K^{+}$-nucleon amplitudes
• Microscopic analysis of K^+-nucleus elastic scattering based on K^+N phase shifts
• $K^{+}$-nucleus elastic scattering revisited from perspective of partial restoration of chiral symmetry