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Measurement E209M50

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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+ Λ, 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
1.64 -0.0824 0.0477 0.0173
1.72 -0.0559 0.0281 0.0173
1.8 -0.0684 0.0265 0.0173
1.88 -0.1294 0.0296 0.0174
1.96 -0.24 0.0378 0.0175
2.04 -0.1909 0.0503 0.0174
2.12 0.0703 0.0696 0.0173
2.2 0.0907 0.0897 0.0173
2.28 0.0676 0.1346 0.0173
2.36 0.2398 0.1791 0.0175