Quasi-free Cross Section Measurements at CLAS: γ D → p π - ( p ) , γ D → K * ( 892 ) 0 Λ ( p ) , γ D → K + Σ * ( 1385 ) - ( p )

Conference · Mon Sep 01 04:00:00 EDT 2014 · Proceedings of Science

OSTI ID:1168666

Mattione, Paul ^[1]

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1. Carnegie Mellon U., JLAB

Preliminary measurements of the quasi-free differential cross sections of the gD -->pp-(p), gD --> K*(892)0L(p), and gD --> K+S*(1385)-(p) reactions are shown using data from the Jefferson Lab Hall B CLAS g13 experiment. No experimental cross section data have yet been published on gD --> K*(892)0L(p), and the only published cross section data on gD --> K+S*(1385)-(p) are at forward angles, where t-channel K+ and K*+ exchanges are predicted to dominate. These data can be used to contribute to the search for the "missing" N* resonances, some of which are predicted to have non-negligible couplings to the excited strangeness channels. These cross sections are shown to be sizable compared to the ground-state channels, indicating that it is important to include excited channels in coupled-channels analyses used to extract the N* resonances. In addition, the gD --> pp-(p) data provide a significant increase to the world statistics, and will be used to study rescattering effects within the deuteron.

• Research Organization: Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1168666
• Report Number(s): JLAB-PHY-13-1840; DOE/OR/23177-3061
• Conference Information: Journal Name: Proceedings of Science Journal Volume: HADRON13
• Country of Publication: United States
• Language: English