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Measurement E209M30

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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 : 0.9 — 3.5 GeV2
W : 1.625 — 2.4 GeV
Ebeam : 6.535 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 0.1395 0.0469 0.0174
1.72 -0.1486 0.0244 0.0174
1.8 -0.1579 0.0248 0.0174
1.88 -0.1313 0.0297 0.0174
1.96 0.0372 0.0419 0.0173
2.04 0.1075 0.0613 0.0173
2.12 -0.0862 0.079 0.0173
2.2 -0.088 0.1105 0.0173
2.28 0.2485 0.1449 0.0175
2.36 0.7618 0.2371 0.0196