CLAS Physics Database

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Measurement E18M18

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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 :	2.081 GeV
E_γ :	1.838 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	0.422	0.174
-0.55	0.207	0.192
-0.35	0.469	0.189
-0.15	0.489	0.15
0.05	0.989	0.112
0.25	0.85	0.08
0.45	0.946	0.068
0.65	0.831	0.103
0.85	0.87	0.063