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Measurement E209M57

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Experiment: CLAS12 RG-K K+Y recoil polarization, 2025

Spokespersons: Daniel S. Carman

Measurement comment: cos(θKc.m.) bin: [-1.0: -0.5]

Publication:

Quantity measured: P0y′,
y projection of recoil polarization P0; in (x',y',z') system
Beam: e, polarization: none
Target: p (Z=1, A=1), polarization: none
Final state: K+ Σ0, polarization: polarized

Q2 : 0.3 — 0.9 GeV2
W : 1.625 — 2.4 GeV
Ebeam : 6.535 GeV

Observable quantity measured (Y axis): P0y′,
Plot measurement data

Parameter (X axis): W, GeV

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

Measured data:

W,
GeV
P0y′ Data errors Systematic errors
1.72 0.9555 0.6201 0.0724
1.8 0.2665 0.2446 0.0716
1.88 0.4165 0.1277 0.0717
1.96 0.4168 0.1531 0.0717
2.04 0.6883 0.2065 0.072
2.12 -0.3154 0.1932 0.0716
2.2 -0.5494 0.1747 0.0718
2.28 -0.8314 0.189 0.0722
2.36 -0.9544 0.249 0.0724