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Measurement E209M88

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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 : 1 — 4.5 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 -0.09 0.2329 0.0715
1.8 0.1165 0.4125 0.0715
1.88 -0.4249 0.3484 0.0717
1.96 -0.7875 0.4498 0.0721
2.04 -0.9828 0.4538 0.0725
2.12 0.4758 0.5802 0.0717
2.2 -0.18 0.5458 0.0715
2.28 0.4823 0.496 0.0717
2.36 0.2646 0.4623 0.0716