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Measurement E209M74

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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: 0.0]

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 : 0.4 — 1 GeV2
W : 1.625 — 2.4 GeV
Ebeam : 7.546 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 0.2183 0.2283 0.0715
1.8 0.1241 0.1957 0.0715
1.88 0.3359 0.1229 0.0716
1.96 0.4687 0.1413 0.0717
2.04 -0.7134 0.2569 0.072
2.12 -0.7059 0.3655 0.072
2.2 0.3417 0.4442 0.0716
2.28 -0.465 0.5371 0.0717
2.36 0.8309 0.588 0.0722