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Measurement E209M82

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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 -0.0584 0.2857 0.0715
1.8 -0.1425 0.1983 0.0715
1.88 -0.2197 0.1223 0.0715
1.96 -0.2085 0.1402 0.0715
2.04 0.0156 0.2341 0.0715
2.12 0.0623 0.3161 0.0715
2.2 0.4669 0.8431 0.0717
2.28 -0.4478 0.5024 0.0717
2.36 0.3628 0.5968 0.0716