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Measurement E209M60

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

Spokespersons: Daniel S. Carman

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

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 0.5256 0.761 0.0718
1.8 0.608 0.3167 0.0719
1.88 0.4089 0.1934 0.0717
1.96 -0.4056 0.2234 0.0716
2.04 0.4391 0.1839 0.0717
2.12 0.814 0.1614 0.0721
2.2 0.7347 0.152 0.072
2.28 0.1592 0.1392 0.0715
2.36 0.4173 0.1395 0.0717