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<p style="margin-left: 0px; margin-right: 0px;">Dear All,</p>
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<p style="margin-left: 0px; margin-right: 0px;">Here I resend my abstract for the Baryon Conference 2016 at Florida, the previous one is still in moderation. Thanks in advance for the comments and suggestion.</p>
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<p style="margin-left: 0px; margin-right: 0px;">Best Regard,</p>
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<p style="margin-left: 0px; margin-right: 0px;">Zulkaida Akbar</p>
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<p style="margin-left: 0px; margin-right: 0px;">Photo-production of Omega Meson Using CLAS at Jefferson Laboratory<br>
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<p style="margin-left: 0px; margin-right: 0px;">The spectrum and properties of the excited states of baryons reveal the dynamics and degrees of freedom of the interaction within them. Higher-lying excited states are generally predicted to have strong couplings
with a heavier meson, e.g. one of the vector meson, $\rho, \omega, \phi$. Therefore, vector meson studies are important to search the so called \textit{missing baryon resonances}.</p>
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<p style="margin-left: 0px; margin-right: 0px;">Photo-production of $\omega$ meson was studied using CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab. Two observables have been measured from the reaction $\gamma p\rightarrow p\omega$ : the differential
cross section and the double polarization observable E. The differential cross section measurement was performed using circularly-polarized photons produced from bremstrahlung of longitudinally-polarized electrons with energy 5.7 GeV, incident on unpolarized
liquid hydrogen target. While the double polarization observable E was measured using circularly-polarized photons with energy range up to 2.4 GeV and longitudinally-polarized butanol target.
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<p style="margin-left: 0px; margin-right: 0px;">The differential cross section as well as the polarization observable allow us to find the $\textit{N}^*$ resonances that decay to $ p\omega$ through Partial Wave Analysis (PWA) method. They also provide a probe
to test theoretical models about the production mechanism of $\omega$ meson, the scaling behaviour of the cross section, and also the Okubo, Zweig, Iizuka (OZI) rule violation.</p>
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<p style="margin-left: 0px; margin-right: 0px;">We found that the $\gamma p\rightarrow p\omega$ differential cross section exhibits scaling behavior as predicted by pQCD. The data also show that the OZI rule is strongly violated at photo-production reaction. </p>
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