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

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

2005-11-14

arxiv.org/abs/nucl-th/0511033v2

Phys.Rev.C73:015208,2006

Physics

Nuclear Physics

Nuclear Theory

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

Scientific paper

10.1103/PhysRevLett.94.072301

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^+.

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