Speaker
Shankar Adhikari
(Florida International University)
Description
Spin observables are important to understand the production mechanisms of hyperons, as well as the contribution of intermediate baryon resonances. $\Lambda$ polarization observables have been studied extensively in the recent decades using the reaction $\gamma + p \to K^+ + \Lambda$. This talk presents the measurement of transferred polarization coefficients $C_x$ and $C_z$, and the induced polarization $P$, using a new set of high statistics data, obtained using the CEBAF Large Acceptance Spectrometer (CLAS) detector at Jefferson Lab. The photon beam energy range is 1.117 to 5.45 GeV. These results ($C_x, C_z$ and $P$) are extracted simultaneously using the Maximum Likelihood Method. The measurements for $C_x$ and $C_z$ have nearly an order of magnitude increase in events compared to previously published results and also extend the kinematic range for $W > 2.54$ GeV, important for both the search for high-mass nucleon states as well as to provide information about non-resonant contributions.
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Primary author
Shankar Adhikari
(Florida International University)
