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Measurement E209M81

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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+ 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 -0.137 0.4219 0.0715
1.8 -0.5901 0.4211 0.0718
1.88 0.1574 0.2266 0.0715
1.96 -0.3639 0.2586 0.0716
2.04 0.0488 0.3436 0.0715
2.12 -0.1886 0.3258 0.0715
2.2 -0.3373 0.2875 0.0716
2.28 -0.6962 0.3235 0.072
2.36 -0.9562 0.3727 0.0724