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Measurement E209M84

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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 : 0.4 — 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 0.0031 0.2578 0.0715
1.8 -0.1538 0.4146 0.0715
1.88 -0.6068 0.2788 0.0719
1.96 -0.7514 0.3155 0.0721
2.04 -0.6396 0.3196 0.0719
2.12 -0.6637 0.2994 0.0719
2.2 -0.8921 0.2602 0.0723
2.28 -0.509 0.2332 0.0717
2.36 -0.5548 0.2187 0.0718