May 29, 2018 to June 3, 2018
Hyatt Regency Indian Wells Conference Center
US/Pacific timezone

Measurement of Polarization Observables in the Reaction $\gamma p \to K^+ \Lambda$

May 29, 2018, 6:10 PM
North Foyer | Joshua Tree Room (Hyatt Regency Indian Wells Conference Center)

North Foyer | Joshua Tree Room

Hyatt Regency Indian Wells Conference Center

44600 Indian Wells Lane, Indian Wells, CA 92210, USA


Shankar Adhikari (Florida International University)


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.
E-mail [email protected]

Primary author

Shankar Adhikari (Florida International University)

Presentation materials