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Measurement E209M54

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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 : 1 — 4.5 GeV2
W : 1.625 — 2.4 GeV
Ebeam : 7.546 GeV

Observable quantity measured (Y axis): P0y,
Plot measurement data

Parameter (X axis): W,

Click here to get data in text file, delimited with tabs.

Measured data:

W P0y Data errors Systematic errors
1.64 0.0668 0.0717 0.0173
1.72 0.0738 0.0339 0.0173
1.8 0.0759 0.0334 0.0173
1.88 -0.0027 0.0396 0.0173
1.96 0.0351 0.0569 0.0173
2.04 0.0085 0.0819 0.0173
2.12 0.2095 0.108 0.0175
2.2 -0.0387 0.1493 0.0173
2.28 0.4397 0.2013 0.0181
2.36 0.6737 0.2916 0.0191