CLAS Physics Database

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Measurement E18M25

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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 :	2.255 GeV
E_γ :	2.24 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	-0.69	0.226
-0.55	-0.466	0.268
-0.35	-0.931	0.252
-0.15	-0.504	0.229
0.05	0.206	0.194
0.25	0.245	0.136
0.45	-0.183	0.098
0.65	-0.466	0.077
0.85	-0.421	0.075