CLAS Physics Database

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Measurement E18M4

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Experiment: E89-004, 2005

Spokespersons: R. A. Schumacher

Experiment comment: Correlated data on W & cos(theta) distribution are available in E18M37 and E18M38 measurements.

Publication:

R. Bradford, R. A. Schumacher, and CLAS Collaboration First Measurement of Beam-Recoil Observables Cx and Cz in Hyperon Photoproduction // Submitted to Physical Review C

Quantity measured: C_z, dimensionless
Spin transfer coefficient C_z for circularly polarized photon beam and recoiling polarized hyperons.
Beam: γ, polarization: circular
Target: p (Z=1, A=1), polarization: none
Final state: K⁺ Λ, polarization: none

W :	1.734 GeV
E_γ :	1.132 GeV

Observable quantity measured (Y axis): C_z, dimensionless
Plot measurement data

Parameter (X axis): cos(θ), dimensionless

Click here to get data in text file, delimited with tabs.

Measured data:

cos(θ), dimensionless	C_z, dimensionless	Data errors, dimensionless
-0.75	0	0
-0.55	0.451	0.28
-0.35	0.742	0.179
-0.15	0.94	0.135
0.05	1.004	0.117
0.25	0.983	0.11
0.45	0.752	0.085
0.65	0.893	0.084
0.85	1.017	0.111