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Measurement E209M52

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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+ 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 Stat. error Syst. error
1.64 -0.2192 0.0743 0.0175
1.72 -0.0444 0.0329 0.0173
1.8 0.0056 0.0295 0.0173
1.88 -0.0491 0.031 0.0173
1.96 -0.1415 0.0317 0.0174
2.04 -0.1868 0.0318 0.0174
2.12 -0.1767 0.031 0.0174
2.2 -0.2402 0.0315 0.0175
2.28 -0.2131 0.0319 0.0175
2.36 -0.2074 0.0333 0.0175