A Phenomenological Lagrangian Approach to Two Kaon Photoproduction and Pentaquark Searches

Journal Article · Sun Aug 01 00:00:00 EDT 2004

OSTI ID:827745

Roberts, Winston

We examine cross sections for the processes {gamma} N {yields} NK{bar K} in the framework of a phenomenological Lagrangian. We include contributions from {Lambda} and {Sigma} resonances up to spin 3/2, as well as those from an exotic {Theta}{sup +}. We allow the {Theta}{sup +} to have spin 1/2 or 3/2, with either positive or negative parity in each case. We also allow the state to be either isovector or isoscalar. We find that the scenario that most closely matches observations at Jefferson Laboratory requires a very large coupling of the {Theta}{sup +} to NK*.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 827745
• Report Number(s): JLAB-THY-04-256; DOE/ER/40150-2831; TRN: US0403599
• Resource Relation: Other Information: No journal information given for this preprint; PBD: 1 Aug 2004
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
CEBAF ACCELERATOR
CROSS SECTIONS
ISOVECTORS
KAONS
LAGRANGIAN FUNCTION
PARITY
PHOTOPRODUCTION
SPIN