CLAS Physics Database

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Measurement E18M1

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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_x, dimensionless
Spin transfer coefficient C_x 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 :	1.679 GeV
E_γ :	1.032 GeV

Observable quantity measured (Y axis): C_x, 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_x, dimensionless	Data errors, dimensionless
-0.75	0	0
-0.55	0.114	0.724
-0.35	-0.96	0.269
-0.15	-0.304	0.186
0.05	-0.47	0.169
0.25	-0.7	0.175
0.45	-0.444	0.139
0.65	-0.216	0.154
0.85	-0.126	0.19