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Measurement E209M45

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

Spokespersons: Daniel S. Carman

Measurement comment: cos(θKc.m.) bin: [-1.0: -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 : 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, GeV

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

Measured data:

W,
GeV
P0y′ Stat. error Syst. error
1.64 -0.3687 0.0918 0.0178
1.72 -0.3902 0.0407 0.0179
1.8 -0.533 0.0471 0.0184
1.88 -0.4621 0.0456 0.0182
1.96 -0.082 0.0517 0.0173
2.04 0.0164 0.0703 0.0173
2.12 0.2503 0.1193 0.0176
2.2 0.3854 0.1779 0.0179
2.28 0.5453 0.2003 0.0185
2.36 0.1573 0.2276 0.0174