The Photoproduction of K$^{+}\Sigma^{\ast -}$(1385)
ORAL
Abstract
The $\Sigma $*(1385) resonance is a member of the baryon decuplet with spin 3/2. The cross section measurement for photoproduction helps to constrain the SU(3) model, as well as to test various other baryon models. There is very little photoproduction data on the neutron. So far, there exists only one published paper (in January 2009 by LEPS collaboration) which covers beam energy from 1.5 GeV to 2.4 GeV and limited angle. We analyze EG3 data from Hall B using CEBAF Large Acceptance Spectrometer(CLAS) in JLab from the threshold energy of the deuteron production to around 5.5 GeV. After careful study, we produce a very clean exclusive data sample of quasi-free photoproduction on the neutron. We present preliminary results of total cross section and differential cross section of K$^{+}\Sigma ^{\ast -}$, as well as the decay angle distribution.
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Authors
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Haiyun Lu
University of South Carolina
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Ralf Gothe
University of South Carolina
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Lewis Graham
University of South Carolina
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Zhiwen Zhao
University of South Carolina, Dept of Phys, U of South Carolina
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Kijun Park
Jefferson Lab, University of South Carolina