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Measurement E209M43

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Experiment: CLAS12 RG-K K+Y recoil polarization, 2025

Spokespersons: Daniel S. Carman

Measurement comment: cos(θKc.m.) bin: [0.0: 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+ 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 0.2808 0.0544 0.0176
1.72 -0.0548 0.0287 0.0173
1.8 -0.1682 0.0267 0.0174
1.88 -0.0778 0.0295 0.0173
1.96 -0.0709 0.0327 0.0173
2.04 -0.0721 0.0353 0.0173
2.12 -0.054 0.0386 0.0173
2.2 0.0383 0.0441 0.0173
2.28 0.0829 0.052 0.0173
2.36 0.1396 0.062 0.0174