Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..aprc10012d&link_type=abstract
American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As
Astronomy and Astrophysics
Astrophysics
Scientific paper
The study of baryon resonances gives new insight into the properties of quarks in bound hadrons. The CLAS spectrometer as TJNAF is particularly well-suited to detailed studies of a wide variety of final states. The eta electroproduction reaction has particular relevance because of the prominence of the S_11(1535) resonance close to threshold. Our first results^1 cover the momentum transfer Q^2 range from 0.25 to 1.5 GeV^2 and resonance mass (W) from 1.5 to 1.8 GeV. The new results cover twice the range in Q^2 and resonance mass up to 2.2 GeV with significantly improved statistical error. Results for the response functions (ɛ RL + R_T), R_LT, and R_TT) and a partial separation into response functions will be presented. Information on potential resonances at higher mass and the interference between S_11(1535) and other resonances will be given. 1. R.A. Thompson, et al. (CLAS Collaboration) Phys. Rev. Lett. 86, 1702 (2001).
Denizli Haluk
Dytman Steven
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