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Measurement E209M29

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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+ Λ, polarization: polarized

Q2 : 0.9 — 3.5 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
1.64 -0.1931 0.0582 0.0174
1.72 -0.4087 0.034 0.018
1.8 -0.4192 0.0345 0.018
1.88 -0.4144 0.0331 0.018
1.96 -0.0532 0.0377 0.0173
2.04 0.1101 0.0526 0.0173
2.12 0.2613 0.0877 0.0176
2.2 0.4616 0.1385 0.0182
2.28 0.4835 0.1426 0.0182
2.36 0.3841 0.1577 0.0179